mirror of
https://github.com/Stone-Red-Code/docs-desktop.git
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Content update - Property value inheritance (user story 1878471) (#1261)
* Add article, code, toc, and redirects * Resolve vb project issues * Update .openpublishing.redirection.json Co-authored-by: Andy (Steve) De George <[email protected]>
This commit is contained in:
Tris Shores
co-authored by
Andy De George
Andy De George
parent
cf371fba4c
commit
e990fbc9a6
+17
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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namespace CodeSampleCsharp
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{
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/// <summary>
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/// Interaction logic for App.xaml
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/// </summary>
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public partial class App : Application
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{
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}
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}
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+10
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using System.Windows;
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[assembly: ThemeInfo(
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ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
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//(used if a resource is not found in the page,
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// or application resource dictionaries)
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ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
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//(used if a resource is not found in the page,
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// app, or any theme specific resource dictionaries)
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)]
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>WinExe</OutputType>
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<TargetFramework>net6.0-windows</TargetFramework>
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<UseWPF>true</UseWPF>
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<NeutralLanguage>en-US</NeutralLanguage>
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</PropertyGroup>
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</Project>
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<Window x:Class="CodeSampleCsharp.MainWindow"
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xmlns:local="clr-namespace:CodeSampleCsharp"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="Property value inheritance" Height="200" Width="400" Background="Yellow">
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="260*"></ColumnDefinition>
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<ColumnDefinition Width="260*"></ColumnDefinition>
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</Grid.ColumnDefinitions>
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<!--<XamlElementTree>-->
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<Canvas x:Name="canvas1" Grid.Column="0" Margin="20" Background="Orange" AllowDrop="True">
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<StackPanel Name="stackPanel1" Margin="20" Background="Green">
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<Label Name="label1" Margin="20" Height="40" Width="40" Background="Blue"/>
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</StackPanel>
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</Canvas>
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<!--</XamlElementTree>-->
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<local:Canvas_AllowDropInheritDisabled x:Name="canvas11" Grid.Column="1" Margin="20" Background="Orange" AllowDrop="True">
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<StackPanel Name="stackPanel11" Margin="20" Background="Green">
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<Label Name="label11" Margin="20" Height="40" Width="40" Background="Blue"/>
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</StackPanel>
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</local:Canvas_AllowDropInheritDisabled>
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</Grid>
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</Window>
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+253
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using System.Diagnostics;
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using System.Windows;
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using System.Windows.Controls;
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namespace CodeSampleCsharp
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{
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/// <summary>
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/// Interaction logic for MainWindow.xaml.
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/// </summary>
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public partial class MainWindow : Window
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{
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public MainWindow()
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{
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InitializeComponent();
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// Code tests.
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TestAllowDropInheritanceInXaml();
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TestAllowDropInheritanceInCode();
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TestIsTransparentInheritanceInCode();
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TestDependencyPropertyWrapper();
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}
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private void TestAllowDropInheritanceInXaml()
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{
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// Test enabled property value inheritance.
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FrameworkPropertyMetadata fpm1 = (FrameworkPropertyMetadata)
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AllowDropProperty.GetMetadata(typeof(Canvas));
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Debug.Assert(fpm1.Inherits == true);
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Debug.Assert(canvas1.AllowDrop == true);
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Debug.Assert(stackPanel1.AllowDrop == true);
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Debug.Assert(label1.AllowDrop == true);
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// Test disabled property value inheritance.
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FrameworkPropertyMetadata fpm11 = (FrameworkPropertyMetadata)
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AllowDropProperty.GetMetadata(typeof(Canvas_AllowDropInheritDisabled));
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Debug.Assert(fpm11.Inherits == false);
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Debug.Assert(canvas11.AllowDrop == true);
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Debug.Assert(stackPanel11.AllowDrop == false);
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Debug.Assert(label11.AllowDrop == false);
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}
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private static void TestAllowDropInheritanceInCode()
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{
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//<CodeElementTree>
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Canvas canvas2 = new()
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{
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AllowDrop = true
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};
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StackPanel stackPanel2 = new();
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Label label2 = new();
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canvas2.Children.Add(stackPanel2);
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stackPanel2.Children.Add(label2);
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//</CodeElementTree>
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// Test enabled property value inheritance.
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FrameworkPropertyMetadata fpm2 = (FrameworkPropertyMetadata)
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AllowDropProperty.GetMetadata(typeof(Canvas));
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Debug.Assert(fpm2.Inherits == true);
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Debug.Assert(canvas2.AllowDrop == true);
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Debug.Assert(stackPanel2.AllowDrop == true);
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Debug.Assert(label2.AllowDrop == true);
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// Test disabled property value inheritance.
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Canvas_AllowDropInheritDisabled canvas3 = new()
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{
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AllowDrop = true
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};
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StackPanel stackPanel3 = new();
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Label label3 = new();
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canvas3.Children.Add(stackPanel3);
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stackPanel3.Children.Add(label3);
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FrameworkPropertyMetadata fpm3 = (FrameworkPropertyMetadata)
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AllowDropProperty.GetMetadata(typeof(Canvas_AllowDropInheritDisabled));
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Debug.Assert(fpm3.Inherits == false);
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Debug.Assert(canvas3.AllowDrop == true);
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Debug.Assert(stackPanel3.AllowDrop == false);
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Debug.Assert(label3.AllowDrop == false);
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}
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private static void TestIsTransparentInheritanceInCode()
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{
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// Test enabled property value inheritance.
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Canvas_IsTransparentInheritEnabled myCanvas1 = new()
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{
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IsTransparent = true
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};
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Canvas_IsTransparentInheritEnabled2 myCanvas2 = new();
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Canvas_IsTransparentInheritEnabled3 myCanvas3 = new();
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myCanvas1.Children.Add(myCanvas2);
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myCanvas2.Children.Add(myCanvas3);
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FrameworkPropertyMetadata fpm1 = (FrameworkPropertyMetadata)Canvas_IsTransparentInheritEnabled
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.IsTransparentProperty.GetMetadata(typeof(Canvas_IsTransparentInheritEnabled));
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Debug.Assert(fpm1.Inherits == true);
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Debug.Assert(myCanvas1.IsTransparent == true);
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Debug.Assert(myCanvas2.IsTransparent == true);
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Debug.Assert(myCanvas3.IsTransparent == true);
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// Test disabled property value inheritance.
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Canvas_IsTransparentInheritDisabled myCanvas4 = new()
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{
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IsTransparent = true
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};
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Canvas_IsTransparentInheritDisabled2 myCanvas5 = new();
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Canvas_IsTransparentInheritDisabled3 myCanvas6 = new();
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myCanvas4.Children.Add(myCanvas5);
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myCanvas5.Children.Add(myCanvas6);
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FrameworkPropertyMetadata fpm2 = (FrameworkPropertyMetadata)Canvas_IsTransparentInheritDisabled
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.IsTransparentProperty.GetMetadata(typeof(Canvas_IsTransparentInheritDisabled));
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Debug.Assert(fpm2.Inherits == false);
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Debug.Assert(myCanvas4.IsTransparent == true);
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Debug.Assert(myCanvas5.IsTransparent == false);
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Debug.Assert(myCanvas6.IsTransparent == false);
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}
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private static void TestDependencyPropertyWrapper()
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{
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// Test Canvas_IsTransparentInheritEnabled.
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Canvas_IsTransparentInheritEnabled myCanvas1 = new();
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Canvas_IsTransparentInheritEnabled2 myCanvas2 = new();
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Canvas_IsTransparentInheritEnabled3 myCanvas3 = new();
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// Test property wrapper.
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myCanvas1.IsTransparent = true;
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myCanvas2.IsTransparent = false;
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myCanvas3.IsTransparent = true;
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Debug.Assert(myCanvas1.IsTransparent == true);
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Debug.Assert(myCanvas2.IsTransparent == false);
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Debug.Assert(myCanvas3.IsTransparent == true);
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// Test individual get/set accessors.
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Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas1, false);
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Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas2, true);
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Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas3, false);
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Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas1) == false);
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Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas2) == true);
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Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas3) == false);
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// Test Canvas_IsTransparentInheritDisabled.
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Canvas_IsTransparentInheritDisabled myCanvas4 = new();
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Canvas_IsTransparentInheritDisabled2 myCanvas5 = new();
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Canvas_IsTransparentInheritDisabled3 myCanvas6 = new();
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// Test property wrapper.
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myCanvas4.IsTransparent = true;
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myCanvas5.IsTransparent = false;
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myCanvas6.IsTransparent = true;
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Debug.Assert(myCanvas4.IsTransparent == true);
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Debug.Assert(myCanvas5.IsTransparent == false);
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Debug.Assert(myCanvas6.IsTransparent == true);
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// Test individual get/set accessors.
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Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas4, false);
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Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas5, true);
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Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas6, false);
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Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas4) == false);
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Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas5) == true);
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Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas6) == false);
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}
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}
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public class Canvas_AllowDropInheritDisabled : Canvas
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{
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static Canvas_AllowDropInheritDisabled()
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{
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// Disable property value inheritance in a new property metadata object.
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FrameworkPropertyMetadata frameworkPropertyMetadata = new();
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frameworkPropertyMetadata.Inherits = false;
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// Override existing property metadata.
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AllowDropProperty.OverrideMetadata(typeof(Canvas_AllowDropInheritDisabled), frameworkPropertyMetadata);
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}
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}
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//<RegisterAttachedPropertyWithValueInheritance>
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public class Canvas_IsTransparentInheritEnabled : Canvas
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{
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// Register an attached dependency property with the specified
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// property name, property type, owner type, and property metadata
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// (default value is 'false' and property value inheritance is enabled).
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public static readonly DependencyProperty IsTransparentProperty =
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DependencyProperty.RegisterAttached(
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name: "IsTransparent",
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propertyType: typeof(bool),
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ownerType: typeof(Canvas_IsTransparentInheritEnabled),
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defaultMetadata: new FrameworkPropertyMetadata(
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defaultValue: false,
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flags: FrameworkPropertyMetadataOptions.Inherits));
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// Declare a get accessor method.
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public static bool GetIsTransparent(Canvas element)
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{
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return (bool)element.GetValue(IsTransparentProperty);
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}
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// Declare a set accessor method.
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public static void SetIsTransparent(Canvas element, bool value)
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{
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element.SetValue(IsTransparentProperty, value);
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}
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// For convenience, declare a property wrapper with get/set accessors.
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public bool IsTransparent
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{
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get => (bool)GetValue(IsTransparentProperty);
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set => SetValue(IsTransparentProperty, value);
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}
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}
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//</RegisterAttachedPropertyWithValueInheritance>
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public class Canvas_IsTransparentInheritEnabled2 : Canvas_IsTransparentInheritEnabled
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{
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}
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public class Canvas_IsTransparentInheritEnabled3 : Canvas_IsTransparentInheritEnabled
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{
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}
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public class Canvas_IsTransparentInheritDisabled : Canvas
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{
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// Register an attached dependency property with the specified
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// property name, property type, owner type, and property metadata
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// (default value is 'false' and value inheritance is disabled).
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public static readonly DependencyProperty IsTransparentProperty =
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DependencyProperty.RegisterAttached(
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name: "IsTransparent",
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propertyType: typeof(bool),
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ownerType: typeof(Canvas_IsTransparentInheritDisabled),
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defaultMetadata: new FrameworkPropertyMetadata(
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defaultValue: false));
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// Declare a get accessor method.
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public static bool GetIsTransparent(Canvas element)
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{
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return (bool)element.GetValue(IsTransparentProperty);
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}
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// Declare a set accessor method.
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public static void SetIsTransparent(Canvas element, bool value)
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{
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element.SetValue(IsTransparentProperty, value);
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}
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// For convenience, declare a property wrapper with get/set accessors.
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public bool IsTransparent
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{
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get => (bool)GetValue(IsTransparentProperty);
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set => SetValue(IsTransparentProperty, value);
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}
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}
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public class Canvas_IsTransparentInheritDisabled2 : Canvas_IsTransparentInheritDisabled
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{
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}
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public class Canvas_IsTransparentInheritDisabled3 : Canvas_IsTransparentInheritDisabled
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{
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}
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}
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+63
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//------------------------------------------------------------------------------
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// <auto-generated>
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// This code was generated by a tool.
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// Runtime Version:4.0.30319.42000
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//
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// Changes to this file may cause incorrect behavior and will be lost if
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// the code is regenerated.
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// </auto-generated>
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//------------------------------------------------------------------------------
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namespace CodeSampleCsharp.Properties {
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using System;
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/// <summary>
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/// A strongly-typed resource class, for looking up localized strings, etc.
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/// </summary>
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// This class was auto-generated by the StronglyTypedResourceBuilder
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// class via a tool like ResGen or Visual Studio.
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// To add or remove a member, edit your .ResX file then rerun ResGen
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// with the /str option, or rebuild your VS project.
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[global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "16.0.0.0")]
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[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
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[global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
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internal class Resources {
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private static global::System.Resources.ResourceManager resourceMan;
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private static global::System.Globalization.CultureInfo resourceCulture;
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[global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
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internal Resources() {
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}
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/// <summary>
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/// Returns the cached ResourceManager instance used by this class.
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/// </summary>
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[global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
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internal static global::System.Resources.ResourceManager ResourceManager {
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get {
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if (object.ReferenceEquals(resourceMan, null)) {
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global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("CodeSampleCsharp.Properties.Resources", typeof(Resources).Assembly);
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resourceMan = temp;
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}
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return resourceMan;
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}
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}
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/// <summary>
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/// Overrides the current thread's CurrentUICulture property for all
|
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/// resource lookups using this strongly typed resource class.
|
||||
/// </summary>
|
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[global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
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internal static global::System.Globalization.CultureInfo Culture {
|
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get {
|
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return resourceCulture;
|
||||
}
|
||||
set {
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resourceCulture = value;
|
||||
}
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||||
}
|
||||
}
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}
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+120
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<?xml version="1.0" encoding="utf-8"?>
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<root>
|
||||
<!--
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||||
Microsoft ResX Schema
|
||||
|
||||
Version 2.0
|
||||
|
||||
The primary goals of this format is to allow a simple XML format
|
||||
that is mostly human readable. The generation and parsing of the
|
||||
various data types are done through the TypeConverter classes
|
||||
associated with the data types.
|
||||
|
||||
Example:
|
||||
|
||||
... ado.net/XML headers & schema ...
|
||||
<resheader name="resmimetype">text/microsoft-resx</resheader>
|
||||
<resheader name="version">2.0</resheader>
|
||||
<resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
|
||||
<resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
|
||||
<data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
|
||||
<data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
|
||||
<data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
|
||||
<value>[base64 mime encoded serialized .NET Framework object]</value>
|
||||
</data>
|
||||
<data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
|
||||
<value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
|
||||
<comment>This is a comment</comment>
|
||||
</data>
|
||||
|
||||
There are any number of "resheader" rows that contain simple
|
||||
name/value pairs.
|
||||
|
||||
Each data row contains a name, and value. The row also contains a
|
||||
type or mimetype. Type corresponds to a .NET class that support
|
||||
text/value conversion through the TypeConverter architecture.
|
||||
Classes that don't support this are serialized and stored with the
|
||||
mimetype set.
|
||||
|
||||
The mimetype is used for serialized objects, and tells the
|
||||
ResXResourceReader how to depersist the object. This is currently not
|
||||
extensible. For a given mimetype the value must be set accordingly:
|
||||
|
||||
Note - application/x-microsoft.net.object.binary.base64 is the format
|
||||
that the ResXResourceWriter will generate, however the reader can
|
||||
read any of the formats listed below.
|
||||
|
||||
mimetype: application/x-microsoft.net.object.binary.base64
|
||||
value : The object must be serialized with
|
||||
: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
|
||||
: and then encoded with base64 encoding.
|
||||
|
||||
mimetype: application/x-microsoft.net.object.soap.base64
|
||||
value : The object must be serialized with
|
||||
: System.Runtime.Serialization.Formatters.Soap.SoapFormatter
|
||||
: and then encoded with base64 encoding.
|
||||
|
||||
mimetype: application/x-microsoft.net.object.bytearray.base64
|
||||
value : The object must be serialized into a byte array
|
||||
: using a System.ComponentModel.TypeConverter
|
||||
: and then encoded with base64 encoding.
|
||||
-->
|
||||
<xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
|
||||
<xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
|
||||
<xsd:element name="root" msdata:IsDataSet="true">
|
||||
<xsd:complexType>
|
||||
<xsd:choice maxOccurs="unbounded">
|
||||
<xsd:element name="metadata">
|
||||
<xsd:complexType>
|
||||
<xsd:sequence>
|
||||
<xsd:element name="value" type="xsd:string" minOccurs="0" />
|
||||
</xsd:sequence>
|
||||
<xsd:attribute name="name" use="required" type="xsd:string" />
|
||||
<xsd:attribute name="type" type="xsd:string" />
|
||||
<xsd:attribute name="mimetype" type="xsd:string" />
|
||||
<xsd:attribute ref="xml:space" />
|
||||
</xsd:complexType>
|
||||
</xsd:element>
|
||||
<xsd:element name="assembly">
|
||||
<xsd:complexType>
|
||||
<xsd:attribute name="alias" type="xsd:string" />
|
||||
<xsd:attribute name="name" type="xsd:string" />
|
||||
</xsd:complexType>
|
||||
</xsd:element>
|
||||
<xsd:element name="data">
|
||||
<xsd:complexType>
|
||||
<xsd:sequence>
|
||||
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
|
||||
<xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
|
||||
</xsd:sequence>
|
||||
<xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
|
||||
<xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
|
||||
<xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
|
||||
<xsd:attribute ref="xml:space" />
|
||||
</xsd:complexType>
|
||||
</xsd:element>
|
||||
<xsd:element name="resheader">
|
||||
<xsd:complexType>
|
||||
<xsd:sequence>
|
||||
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
|
||||
</xsd:sequence>
|
||||
<xsd:attribute name="name" type="xsd:string" use="required" />
|
||||
</xsd:complexType>
|
||||
</xsd:element>
|
||||
</xsd:choice>
|
||||
</xsd:complexType>
|
||||
</xsd:element>
|
||||
</xsd:schema>
|
||||
<resheader name="resmimetype">
|
||||
<value>text/microsoft-resx</value>
|
||||
</resheader>
|
||||
<resheader name="version">
|
||||
<value>2.0</value>
|
||||
</resheader>
|
||||
<resheader name="reader">
|
||||
<value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
|
||||
</resheader>
|
||||
<resheader name="writer">
|
||||
<value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
|
||||
</resheader>
|
||||
</root>
|
||||
+9
@@ -0,0 +1,9 @@
|
||||
<Application x:Class="CodeSampleCsharp.App"
|
||||
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
||||
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
|
||||
xmlns:local="clr-namespace:CodeSampleCsharp"
|
||||
StartupUri="MainWindow.xaml">
|
||||
<Application.Resources>
|
||||
|
||||
</Application.Resources>
|
||||
</Application>
|
||||
+8
@@ -0,0 +1,8 @@
|
||||
<Application x:Class="Application"
|
||||
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
||||
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
|
||||
StartupUri="MainWindow.xaml">
|
||||
<Application.Resources>
|
||||
|
||||
</Application.Resources>
|
||||
</Application>
|
||||
+6
@@ -0,0 +1,6 @@
|
||||
Class Application
|
||||
|
||||
' Application-level events, such as Startup, Exit, and DispatcherUnhandledException
|
||||
' can be handled in this file.
|
||||
|
||||
End Class
|
||||
+9
@@ -0,0 +1,9 @@
|
||||
'The ThemeInfo attribute describes where any theme specific and generic resource dictionaries can be found.
|
||||
'1st parameter: where theme specific resource dictionaries are located
|
||||
'(used if a resource is not found in the page,
|
||||
' or application resource dictionaries)
|
||||
|
||||
'2nd parameter: where the generic resource dictionary is located
|
||||
'(used if a resource is not found in the page,
|
||||
'app, and any theme specific resource dictionaries)
|
||||
<Assembly: ThemeInfo(ResourceDictionaryLocation.None, ResourceDictionaryLocation.SourceAssembly)>
|
||||
+23
@@ -0,0 +1,23 @@
|
||||
<Project Sdk="Microsoft.NET.Sdk">
|
||||
|
||||
<PropertyGroup>
|
||||
<OutputType>WinExe</OutputType>
|
||||
<TargetFramework>net6.0-windows</TargetFramework>
|
||||
<UseWPF>true</UseWPF>
|
||||
<RootNamespace>CodeSampleVb</RootNamespace>
|
||||
<NeutralLanguage>en-US</NeutralLanguage>
|
||||
</PropertyGroup>
|
||||
|
||||
<ItemGroup>
|
||||
<Import Include="System.Windows" />
|
||||
<Import Include="System.Windows.Controls" />
|
||||
<Import Include="System.Windows.Data" />
|
||||
<Import Include="System.Windows.Documents" />
|
||||
<Import Include="System.Windows.Input" />
|
||||
<Import Include="System.Windows.Media" />
|
||||
<Import Include="System.Windows.Media.Imaging" />
|
||||
<Import Include="System.Windows.Navigation" />
|
||||
<Import Include="System.Windows.Shapes" />
|
||||
</ItemGroup>
|
||||
|
||||
</Project>
|
||||
+29
@@ -0,0 +1,29 @@
|
||||
<Window x:Class="CodeSampleVb.MainWindow"
|
||||
xmlns:local="clr-namespace:CodeSampleVb.CodeSampleVb"
|
||||
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
|
||||
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
|
||||
Title="Property value inheritance" Height="200" Width="400" Background="Yellow">
|
||||
|
||||
<Grid>
|
||||
<Grid.ColumnDefinitions>
|
||||
<ColumnDefinition Width="260*"></ColumnDefinition>
|
||||
<ColumnDefinition Width="260*"></ColumnDefinition>
|
||||
</Grid.ColumnDefinitions>
|
||||
|
||||
<!--<XamlElementTree>-->
|
||||
<Canvas x:Name="canvas1" Grid.Column="0" Margin="20" Background="Orange" AllowDrop="True">
|
||||
<StackPanel x:Name="stackPanel1" Margin="20" Background="Green">
|
||||
<Label x:Name="label1" Margin="20" Height="40" Width="40" Background="Blue"/>
|
||||
</StackPanel>
|
||||
</Canvas>
|
||||
<!--</XamlElementTree>-->
|
||||
|
||||
<local:Canvas_AllowDropInheritDisabled Grid.Column="1" Margin="20" Background="Orange" AllowDrop="True">
|
||||
<StackPanel Name="stackPanel11" Margin="20" Background="Green">
|
||||
<Label Name="label11" Margin="20" Height="40" Width="40" Background="Blue"/>
|
||||
</StackPanel>
|
||||
</local:Canvas_AllowDropInheritDisabled>
|
||||
|
||||
</Grid>
|
||||
|
||||
</Window>
|
||||
+253
@@ -0,0 +1,253 @@
|
||||
Namespace CodeSampleVb
|
||||
Partial Public Class MainWindow
|
||||
Inherits Window
|
||||
|
||||
Public Sub New()
|
||||
InitializeComponent()
|
||||
|
||||
' Code tests.
|
||||
TestAllowDropInheritanceInXaml()
|
||||
TestAllowDropInheritanceInCode()
|
||||
TestIsTransparentInheritanceInCode()
|
||||
TestDependencyPropertyWrapper()
|
||||
End Sub
|
||||
|
||||
Private Sub TestAllowDropInheritanceInXaml()
|
||||
|
||||
' Test enabled property value inheritance.
|
||||
Dim fpm1 As FrameworkPropertyMetadata =
|
||||
CType(AllowDropProperty.
|
||||
GetMetadata(GetType(Canvas)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm1.[Inherits] = True)
|
||||
Debug.Assert(canvas1.AllowDrop = True)
|
||||
Debug.Assert(stackPanel1.AllowDrop = True)
|
||||
Debug.Assert(label1.AllowDrop = True)
|
||||
|
||||
' Test disabled property value inheritance.
|
||||
Dim fpm11 As FrameworkPropertyMetadata =
|
||||
CType(AllowDropProperty.
|
||||
GetMetadata(GetType(Canvas_AllowDropInheritDisabled)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm11.[Inherits] = False)
|
||||
' Debug.Assert(canvas11.AllowDrop = True)
|
||||
Debug.Assert(stackPanel11.AllowDrop = False)
|
||||
Debug.Assert(label11.AllowDrop = False)
|
||||
End Sub
|
||||
|
||||
Private Shared Sub TestAllowDropInheritanceInCode()
|
||||
|
||||
'<CodeElementTree>
|
||||
Dim canvas2 As New Canvas With {
|
||||
.AllowDrop = True
|
||||
}
|
||||
Dim stackPanel2 As New StackPanel()
|
||||
Dim label2 As New Label()
|
||||
canvas2.Children.Add(stackPanel2)
|
||||
stackPanel2.Children.Add(label2)
|
||||
'</CodeElementTree>
|
||||
|
||||
' Test enabled property value inheritance.
|
||||
Dim fpm2 As FrameworkPropertyMetadata =
|
||||
CType(AllowDropProperty.
|
||||
GetMetadata(GetType(Canvas)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm2.[Inherits] = True)
|
||||
Debug.Assert(canvas2.AllowDrop = True)
|
||||
Debug.Assert(stackPanel2.AllowDrop = True)
|
||||
Debug.Assert(label2.AllowDrop = True)
|
||||
|
||||
' Test disabled property value inheritance.
|
||||
Dim canvas3 As New Canvas_AllowDropInheritDisabled With {
|
||||
.AllowDrop = True
|
||||
}
|
||||
Dim stackPanel3 As New StackPanel()
|
||||
Dim label3 As New Label()
|
||||
canvas3.Children.Add(stackPanel3)
|
||||
stackPanel3.Children.Add(label3)
|
||||
Dim fpm3 As FrameworkPropertyMetadata =
|
||||
CType(AllowDropProperty.
|
||||
GetMetadata(GetType(Canvas_AllowDropInheritDisabled)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm3.[Inherits] = False)
|
||||
Debug.Assert(canvas3.AllowDrop = True)
|
||||
Debug.Assert(stackPanel3.AllowDrop = False)
|
||||
Debug.Assert(label3.AllowDrop = False)
|
||||
|
||||
End Sub
|
||||
|
||||
Private Shared Sub TestIsTransparentInheritanceInCode()
|
||||
|
||||
' Test enabled property value inheritance.
|
||||
Dim myCanvas1 As New Canvas_IsTransparentInheritEnabled With {
|
||||
.IsTransparent = True
|
||||
}
|
||||
Dim myCanvas2 As New Canvas_IsTransparentInheritEnabled2()
|
||||
Dim myCanvas3 As New Canvas_IsTransparentInheritEnabled3()
|
||||
myCanvas1.Children.Add(myCanvas2)
|
||||
myCanvas2.Children.Add(myCanvas3)
|
||||
Dim fpm1 As FrameworkPropertyMetadata =
|
||||
CType(Canvas_IsTransparentInheritEnabled.IsTransparentProperty.
|
||||
GetMetadata(GetType(Canvas_IsTransparentInheritEnabled)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm1.[Inherits] = True)
|
||||
Debug.Assert(myCanvas1.IsTransparent = True)
|
||||
Debug.Assert(myCanvas2.IsTransparent = True)
|
||||
Debug.Assert(myCanvas3.IsTransparent = True)
|
||||
|
||||
' Test disabled property value inheritance.
|
||||
Dim myCanvas4 As New Canvas_IsTransparentInheritDisabled With {
|
||||
.IsTransparent = True
|
||||
}
|
||||
Dim myCanvas5 As New Canvas_IsTransparentInheritDisabled2()
|
||||
Dim myCanvas6 As New Canvas_IsTransparentInheritDisabled3()
|
||||
myCanvas4.Children.Add(myCanvas5)
|
||||
myCanvas5.Children.Add(myCanvas6)
|
||||
Dim fpm2 As FrameworkPropertyMetadata =
|
||||
CType(Canvas_IsTransparentInheritDisabled.IsTransparentProperty.
|
||||
GetMetadata(GetType(Canvas_IsTransparentInheritDisabled)), FrameworkPropertyMetadata)
|
||||
Debug.Assert(fpm2.[Inherits] = False)
|
||||
Debug.Assert(myCanvas4.IsTransparent = True)
|
||||
Debug.Assert(myCanvas5.IsTransparent = False)
|
||||
Debug.Assert(myCanvas6.IsTransparent = False)
|
||||
|
||||
End Sub
|
||||
|
||||
Private Shared Sub TestDependencyPropertyWrapper()
|
||||
|
||||
' Test Canvas_IsTransparentInheritEnabled.
|
||||
Dim myCanvas1 As New Canvas_IsTransparentInheritEnabled()
|
||||
Dim myCanvas2 As New Canvas_IsTransparentInheritEnabled2()
|
||||
Dim myCanvas3 As New Canvas_IsTransparentInheritEnabled3()
|
||||
' Test property wrapper.
|
||||
myCanvas1.IsTransparent = True
|
||||
myCanvas2.IsTransparent = False
|
||||
myCanvas3.IsTransparent = True
|
||||
Debug.Assert(myCanvas1.IsTransparent = True)
|
||||
Debug.Assert(myCanvas2.IsTransparent = False)
|
||||
Debug.Assert(myCanvas3.IsTransparent = True)
|
||||
' Test individual get/set accessors.
|
||||
Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas1, False)
|
||||
Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas2, True)
|
||||
Canvas_IsTransparentInheritEnabled.SetIsTransparent(myCanvas3, False)
|
||||
Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas1) = False)
|
||||
Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas2) = True)
|
||||
Debug.Assert(Canvas_IsTransparentInheritEnabled.GetIsTransparent(myCanvas3) = False)
|
||||
|
||||
' Test Canvas_IsTransparentInheritDisabled.
|
||||
Dim myCanvas4 As New Canvas_IsTransparentInheritDisabled()
|
||||
Dim myCanvas5 As New Canvas_IsTransparentInheritDisabled2()
|
||||
Dim myCanvas6 As New Canvas_IsTransparentInheritDisabled3()
|
||||
' Test property wrapper.
|
||||
myCanvas4.IsTransparent = True
|
||||
myCanvas5.IsTransparent = False
|
||||
myCanvas6.IsTransparent = True
|
||||
Debug.Assert(myCanvas4.IsTransparent = True)
|
||||
Debug.Assert(myCanvas5.IsTransparent = False)
|
||||
Debug.Assert(myCanvas6.IsTransparent = True)
|
||||
' Test individual get/set accessors.
|
||||
Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas4, False)
|
||||
Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas5, True)
|
||||
Canvas_IsTransparentInheritDisabled.SetIsTransparent(myCanvas6, False)
|
||||
Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas4) = False)
|
||||
Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas5) = True)
|
||||
Debug.Assert(Canvas_IsTransparentInheritDisabled.GetIsTransparent(myCanvas6) = False)
|
||||
|
||||
End Sub
|
||||
End Class
|
||||
|
||||
Public Class Canvas_AllowDropInheritDisabled
|
||||
Inherits Canvas
|
||||
Shared Sub New()
|
||||
' Disable property value inheritance in a new property metadata object.
|
||||
Dim frameworkPropertyMetadata As New FrameworkPropertyMetadata With {
|
||||
.Inherits = False
|
||||
}
|
||||
' Override existing property metadata.
|
||||
AllowDropProperty.OverrideMetadata(GetType(Canvas_AllowDropInheritDisabled), frameworkPropertyMetadata)
|
||||
End Sub
|
||||
End Class
|
||||
|
||||
'<RegisterAttachedPropertyWithValueInheritance>
|
||||
Public Class Canvas_IsTransparentInheritEnabled
|
||||
Inherits Canvas
|
||||
|
||||
' Register an attached dependency property with the specified
|
||||
' property name, property type, owner type, and property metadata
|
||||
' (default value is 'false' and property value inheritance is enabled).
|
||||
Public Shared ReadOnly IsTransparentProperty As DependencyProperty =
|
||||
DependencyProperty.RegisterAttached(
|
||||
name:="IsTransparent",
|
||||
propertyType:=GetType(Boolean),
|
||||
ownerType:=GetType(Canvas_IsTransparentInheritEnabled),
|
||||
defaultMetadata:=New FrameworkPropertyMetadata(
|
||||
defaultValue:=False,
|
||||
flags:=FrameworkPropertyMetadataOptions.[Inherits]))
|
||||
|
||||
' Declare a get accessor method.
|
||||
Public Shared Function GetIsTransparent(element As Canvas) As Boolean
|
||||
Return element.GetValue(IsTransparentProperty)
|
||||
End Function
|
||||
|
||||
' Declare a set accessor method.
|
||||
Public Shared Sub SetIsTransparent(element As Canvas, value As Boolean)
|
||||
element.SetValue(IsTransparentProperty, value)
|
||||
End Sub
|
||||
|
||||
' For convenience, declare a property wrapper with get/set accessors.
|
||||
Public Property IsTransparent As Boolean
|
||||
Get
|
||||
Return GetValue(IsTransparentProperty)
|
||||
End Get
|
||||
Set(value As Boolean)
|
||||
SetValue(IsTransparentProperty, value)
|
||||
End Set
|
||||
End Property
|
||||
End Class
|
||||
'</RegisterAttachedPropertyWithValueInheritance>
|
||||
|
||||
Public Class Canvas_IsTransparentInheritEnabled2
|
||||
Inherits Canvas_IsTransparentInheritEnabled
|
||||
End Class
|
||||
|
||||
Public Class Canvas_IsTransparentInheritEnabled3
|
||||
Inherits Canvas_IsTransparentInheritEnabled
|
||||
End Class
|
||||
|
||||
Public Class Canvas_IsTransparentInheritDisabled
|
||||
Inherits Canvas
|
||||
|
||||
' Register an attached dependency property with the specified
|
||||
' property name, property type, owner type, and property metadata
|
||||
' (default value is 'false' and property value inheritance is disabled).
|
||||
Public Shared ReadOnly IsTransparentProperty As DependencyProperty =
|
||||
DependencyProperty.RegisterAttached(
|
||||
name:="IsTransparent",
|
||||
propertyType:=GetType(Boolean),
|
||||
ownerType:=GetType(Canvas_IsTransparentInheritDisabled),
|
||||
defaultMetadata:=New FrameworkPropertyMetadata(defaultValue:=False))
|
||||
|
||||
' Declare a get accessor method.
|
||||
Public Shared Function GetIsTransparent(element As Canvas) As Boolean
|
||||
Return element.GetValue(IsTransparentProperty)
|
||||
End Function
|
||||
|
||||
' Declare a set accessor method.
|
||||
Public Shared Sub SetIsTransparent(element As Canvas, value As Boolean)
|
||||
element.SetValue(IsTransparentProperty, value)
|
||||
End Sub
|
||||
|
||||
' For convenience, declare a property wrapper with get/set accessors.
|
||||
Public Property IsTransparent As Boolean
|
||||
Get
|
||||
Return GetValue(IsTransparentProperty)
|
||||
End Get
|
||||
Set(value As Boolean)
|
||||
SetValue(IsTransparentProperty, value)
|
||||
End Set
|
||||
End Property
|
||||
End Class
|
||||
|
||||
Public Class Canvas_IsTransparentInheritDisabled2
|
||||
Inherits Canvas_IsTransparentInheritDisabled
|
||||
End Class
|
||||
|
||||
Public Class Canvas_IsTransparentInheritDisabled3
|
||||
Inherits Canvas_IsTransparentInheritDisabled
|
||||
End Class
|
||||
End Namespace
|
||||
Reference in New Issue
Block a user