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Trigger.SourceName Property

Gets or sets the name of the object with the property that causes the associated setters to be applied.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

[AmbientAttribute]
public string SourceName { get; set; }
<object SourceName="string" .../>

Property Value

Type: System.String
The default property is null. If this property is null, then the Property property is evaluated with respect to the element this style or template is being applied to (the styled parent or the templated parent).

ExceptionCondition
InvalidOperationException

After a Trigger is in use, it cannot be modified.

You can set this property to the name of any element within the scope of where the trigger collection (the collection that this Trigger is part of) is applied. This is typically a named element that is within the template that contains this Trigger.

You can name an object using the x:Name Directive syntax.

One scenario when you would use the SourceName property is when the property of interest is not a property of the templated parent, as in the following example:

<Trigger SourceName="Popup"
         Property="AllowsTransparency"
         Value="True">
  <Setter TargetName="SubmenuBorder"
          Property="CornerRadius"
          Value="0,0,4,4" />
  <Setter TargetName="SubmenuBorder"
          Property="Padding"
          Value="0,0,0,3" />
</Trigger>

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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