CheckSealed Method
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SetterBase.CheckSealed Method ()

 

Checks whether this object is read-only and cannot be changed.

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

protected void CheckSealed()

Classes that derive from SetterBase must call this method before applying any changes to the state of the object. If the object is read-only and you try to modify the state of the object, an exception is thrown.

.NET Framework
Available since 3.0
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