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David CoulterandAndy De George
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* Links: .NET Desktop - framework\wpf * Apply suggestions from code review Co-authored-by: Andy De George <[email protected]>
42 lines
2.7 KiB
Markdown
42 lines
2.7 KiB
Markdown
---
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title: "How to: Create a Binding in Code"
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description: Learn how to create a binding in code in a Windows Presentation Foundation application by calling the SetBinding method directly.
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "binding data [WPF], creating"
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- "data binding [WPF], creating"
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ms.assetid: 1a606db9-cf5f-42ed-a1c5-9e4722ec77a0
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---
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# How to: Create a Binding in Code
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This example shows how to create and set a <xref:System.Windows.Data.Binding> in code.
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## Example
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The <xref:System.Windows.FrameworkElement> class and the <xref:System.Windows.FrameworkContentElement> class both expose a `SetBinding` method. If you are binding an element that inherits either of these classes, you can call the <xref:System.Windows.FrameworkElement.SetBinding%2A> method directly.
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The following example creates a class named, `MyData`, which contains a property named `MyDataProperty`.
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[!code-csharp[CodeOnlyBinding#DataObject](~/samples/snippets/csharp/VS_Snippets_Wpf/CodeOnlyBinding/CSharp/MyData.cs#dataobject)]
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[!code-vb[CodeOnlyBinding#DataObject](~/samples/snippets/visualbasic/VS_Snippets_Wpf/CodeOnlyBinding/VisualBasic/MyData.vb#dataobject)]
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The following example shows how to create a binding object to set the source of the binding. The example uses <xref:System.Windows.FrameworkElement.SetBinding%2A> to bind the <xref:System.Windows.Controls.TextBlock.Text%2A> property of `myText`, which is a <xref:System.Windows.Controls.TextBlock> control, to `MyDataProperty`.
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[!code-csharp[CodeOnlyBinding#1](~/samples/snippets/csharp/VS_Snippets_Wpf/CodeOnlyBinding/CSharp/binding.cs#1)]
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[!code-vb[CodeOnlyBinding#1](~/samples/snippets/visualbasic/VS_Snippets_Wpf/CodeOnlyBinding/VisualBasic/App.vb#1)]
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For the complete code sample, see [Code-only Binding Sample](/previous-versions/dotnet/netframework-3.5/ms771500(v=vs.90)).
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Instead of calling <xref:System.Windows.FrameworkElement.SetBinding%2A>, you can use the <xref:System.Windows.Data.BindingOperations.SetBinding%2A> static method of the <xref:System.Windows.Data.BindingOperations> class. The following example, calls <xref:System.Windows.Data.BindingOperations.SetBinding%2A?displayProperty=nameWithType> instead of <xref:System.Windows.FrameworkElement.SetBinding%2A?displayProperty=nameWithType> to bind `myText` to `myDataProperty`.
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[!code-csharp[CodeOnlyBinding#BOSetBinding](~/samples/snippets/csharp/VS_Snippets_Wpf/CodeOnlyBinding/CSharp/binding.cs#bosetbinding)]
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[!code-vb[CodeOnlyBinding#BOSetBinding](~/samples/snippets/visualbasic/VS_Snippets_Wpf/CodeOnlyBinding/VisualBasic/App.vb#bosetbinding)]
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## See also
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- [Data Binding Overview](/dotnet/desktop-wpf/data/data-binding-overview)
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- [How-to Topics](data-binding-how-to-topics.md)
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