mirror of
https://github.com/Stone-Red-Code/docs-desktop.git
synced 2026-09-09 16:06:09 +02:00
Andy De George
da363692ff
* Reset branch for WPF changes * Convert BMP to PNG; fix link-out-of-scope err * Add snippets for WPF... 6794 files!!!! * Add missing snippets * update file updated between migration * Fix paths to include * update breadcrumb and toc * fix index links * fix index links * fix index links * fix markdown
33 lines
1.9 KiB
Markdown
33 lines
1.9 KiB
Markdown
---
|
|
title: "How to: Bind to the Results of a LINQ Query"
|
|
ms.date: "03/30/2017"
|
|
helpviewer_keywords:
|
|
- "running a LINQ query [WPF], bind to results"
|
|
- "binding to LINQ query results [WPF]"
|
|
ms.assetid: ff2844d9-17ed-4ea6-aab1-5111af0bc684
|
|
---
|
|
# How to: Bind to the Results of a LINQ Query
|
|
|
|
This example demonstrates how to run a LINQ query and then bind to the results.
|
|
|
|
## Example
|
|
|
|
The following example creates two list boxes. The first list box contains three list items.
|
|
|
|
[!code-xaml[LinqExample#UI](~/samples/snippets/csharp/VS_Snippets_Wpf/LinqExample/CSharp/Window1.xaml#ui)]
|
|
|
|
Selecting an item from the first list box invokes the following event handler. In this example, `Tasks` is a collection of `Task` objects. The `Task` class has a property named `Priority`. This event handler runs a LINQ query that returns the collection of `Task` objects that have the selected priority value, and then sets that as the <xref:System.Windows.FrameworkElement.DataContext%2A>:
|
|
|
|
[!code-csharp[LinqExample#Using](~/samples/snippets/csharp/VS_Snippets_Wpf/LinqExample/CSharp/Window1.xaml.cs#using)]
|
|
[!code-csharp[LinqExample#Tasks](~/samples/snippets/csharp/VS_Snippets_Wpf/LinqExample/CSharp/Window1.xaml.cs#tasks)]
|
|
[!code-csharp[LinqExample#Handler](~/samples/snippets/csharp/VS_Snippets_Wpf/LinqExample/CSharp/Window1.xaml.cs#handler)]
|
|
|
|
The second list box binds to that collection because its <xref:System.Windows.Controls.ItemsControl.ItemsSource%2A> value is set to `{Binding}`. As a result, it displays the returned collection (based on the `myTaskTemplate` <xref:System.Windows.DataTemplate>).
|
|
|
|
## See also
|
|
|
|
- [Make Data Available for Binding in XAML](how-to-make-data-available-for-binding-in-xaml.md)
|
|
- [Bind to a Collection and Display Information Based on Selection](how-to-bind-to-a-collection-and-display-information-based-on-selection.md)
|
|
- [What's New in WPF Version 4.5](../getting-started/whats-new.md)
|
|
- [Data Binding Overview](/dotnet/desktop-wpf/data/data-binding-overview)
|