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ProvidePropertyAttribute Class

Specifies the name of the property that an implementer of IExtenderProvider offers to other components. This class cannot be inherited

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

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = true)]
public sealed class ProvidePropertyAttribute : Attribute

When you mark a class with this attribute, you tell the code generator to create an extender property with the name you provide. The marked class must implement IExtenderProvider. As a result, the new property can be used by other components in a container.

Within the marked class, you must implement Get <name> and Set <name> methods. For example, if you mark a class with [ProvideProperty("PropertyName")], you must implement GetPropertyName and SetPropertyName methods. To specify that the new property will be an extender property, you must implement from IExtenderProvider, you must also implement a CanExtend method.

For more information, see Attributes Overview and Extending Metadata Using Attributes.

The following example marks MyClass with a ProvidePropertyAttribute that tells the compiler to create a property called MyProperty from the GetMyProperty and SetMyProperty methods.

[ProvideProperty("MyProperty", typeof(Control))]
public class MyClass : IExtenderProvider {
    protected CultureInfo ciMine = null;
    // Provides the Get portion of MyProperty.  
    public CultureInfo GetMyProperty(Control myControl) {
        // Insert code here. 
        return ciMine;

    // Provides the Set portion of MyProperty. 
    public void SetMyProperty(Control myControl, string value) {
        // Insert code here.

    /* When you inherit from IExtenderProvider, you must implement the 
     * CanExtend method. */ 
    public bool CanExtend(Object target) {
        return(target is Control);

    // Insert additional code here.


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 XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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, 2.0, 1.1, 1.0