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Restore WPF .NET Framework content from WPF .NET (#144)

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* Copy .NET 5 WPF content back into .NET Framework

* Add H1 heading difference for .NET

* Fix validation errors
This commit is contained in:
Andy De George
2020-12-07 13:06:20 -08:00
committed by GitHub
parent 99e90fa162
commit ffc3b77150
168 changed files with 4527 additions and 31 deletions
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dotnet-desktop-guide/net/wpf/data/data-binding-overview.md
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@@ -1,6 +1,6 @@
---
title: Data binding overview
description: Learn about the different data sources you can add to your project in Windows Presentation Foundation for .NET Core. Data sources can be bound to XAML elements to create dynamic apps.
description: Learn about the different data sources you can add to your project in Windows Presentation Foundation for .NET. Data sources can be bound to XAML elements to create dynamic apps.
author: adegeo
ms.date: 09/19/2019
ms.author: adegeo
@@ -10,7 +10,7 @@ dev_langs:
- "vb"
---
# Data binding overview in WPF
# Data binding overview (WPF .NET)
Data binding in Windows Presentation Foundation (WPF) provides a simple and consistent way for apps to present and interact with data. Elements can be bound to data from a variety of data sources in the form of .NET objects and XML. Any <xref:System.Windows.Controls.ContentControl> such as <xref:System.Windows.Controls.Button> and any <xref:System.Windows.Controls.ItemsControl>, such as <xref:System.Windows.Controls.ListBox> and <xref:System.Windows.Controls.ListView>, have built-in functionality to enable flexible styling of single data items or collections of data items. Sort, filter, and group views can be generated on top of the data.
@@ -400,7 +400,7 @@ With the custom <xref:System.Windows.Controls.Validation.ErrorTemplate%2A> and t
If your <xref:System.Windows.Data.Binding> has associated validation rules but you do not specify an <xref:System.Windows.Controls.Validation.ErrorTemplate%2A> on the bound control, a default <xref:System.Windows.Controls.Validation.ErrorTemplate%2A> will be used to notify users when there is a validation error. The default <xref:System.Windows.Controls.Validation.ErrorTemplate%2A> is a control template that defines a red border in the adorner layer. With the default <xref:System.Windows.Controls.Validation.ErrorTemplate%2A> and the <xref:System.Windows.Controls.ToolTip>, the UI of the *StartPriceEntryForm* <xref:System.Windows.Controls.TextBox> looks like the following when there is a validation error.
![Data binding validation error](./media/data-binding-overview/demo-validation-price.png "DataBindingDemo_ValidationDefault")
![Data binding validation error default](./media/data-binding-overview/demo-validation-price.png "DataBindingDemo_ValidationDefault")
For an example of how to provide logic to validate all controls in a dialog box, see the Custom Dialog Boxes section in the [Dialog boxes overview](../../../framework/wpf/app-development/dialog-boxes-overview.md).