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LicenseProviderAttribute Class

Specifies the LicenseProvider to use with a class. This class cannot be inherited.

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

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false, Inherited = false)]
public sealed class LicenseProviderAttribute : Attribute

When you create a component that you want to license, you must specify the LicenseProvider by marking the component with a LicenseProviderAttribute.

Use the LicenseProvider property to get the Type of the LicenseProvider.

For more information about attributes, see Attributes Overview and Extending Metadata Using Attributes. For more information about licensing, see How to: License Components and Controls.


The HostProtectionAttribute attribute applied to this class has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The following code example uses the LicFileLicenseProvider as the license provider for MyControl.

 public class MyControl : Control {

    // Insert code here. 

    protected override void Dispose(bool disposing) {
       /* All components must dispose of the licenses they grant. 
        * Insert code here to dispose of the license. */

The next code example creates an instance of the MyControl class. Then, it gets the attributes for the class, and prints the name of the license provider used by myNewControl.

public static int Main() {
    // Creates a new component.
    MyControl myNewControl = new MyControl();

    // Gets the attributes for the component.
    AttributeCollection attributes = TypeDescriptor.GetAttributes(myNewControl);

    /* Prints the name of the license provider by retrieving the LicenseProviderAttribute 
     * from the AttributeCollection. */
    LicenseProviderAttribute myAttribute = (LicenseProviderAttribute)attributes[typeof(LicenseProviderAttribute)];
    Console.WriteLine("The license provider for this class is: " + myAttribute.LicenseProvider.ToString());

    return 0;


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