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Style.Seal Method

Locks the style so that the TargetType property or any Setter in the Setters collection cannot be changed.

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

public void Seal()

A Style is sealed either when the Seal method is called on the Style or when the Style is applied to a FrameworkElement. When a Style is sealed, all the base styles it derives from up the inheritance chain are also sealed.

If you try to change the TargetType or a Setter in the style after it has been sealed, an InvalidOperationException is thrown.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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