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TemplatePartAttribute Class

Represents an attribute that is applied to the class definition to identify the types of the named parts that are used for templating.

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

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = true)]
public sealed class TemplatePartAttribute : Attribute
You cannot use this class or its properties in XAML.

Control authors apply this attribute to the class definition to inform template authors the types of the parts to use for styling the class. These parts are usually required in the template and have a specific predefined name. There can only be one element with a given name in any template.

For example, if you look at the class declaration of the ComboBox class, you can see that the parts PART_EditableTextBox and PART_Popup are of types TextBox and Popup respectively.

For more information, see Guidelines for Designing Stylable Controls


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0