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FrameworkContentElement.TryFindResource Method

Searches for a resource with the specified key, and returns that resource if found.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)

public Object TryFindResource(
	Object resourceKey
)

Parameters

resourceKey
Type: System.Object

Key identifier of the resource to be found.

Return Value

Type: System.Object
The found resource. If no resource was found, null is returned.

If the resource is not found on the calling element, the parent tree is searched using the logical tree, in the same way that the tree would be searched if a dynamic resource reference were requested by key at run-time.

Typically you would immediately cast the return value to the type of the property that you were attempting to set with the returned resource value.

The FindResource method has similar behavior, except that it will throw an exception in the case of not finding a resource with the provided key.

The following example finds a resource as defined in markup and applies it to a certain property of an element in response to a routed event.

void SetBGByResourceTry(object sender, RoutedEventArgs e)
{
    Block b = sender as Block;
    b.Background = (Brush)this.TryFindResource("RainbowBrush");
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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