SelectingProviderEventArgs Class

Provides data for the SelectingProvider event.

Namespace:  System.Web.ApplicationServices
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

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public class SelectingProviderEventArgs : EventArgs

The SelectingProviderEventArgs class supplies values to the SelectingProvider event handler. You create a SelectingProvider event handler to select the role provider at run time.

The RoleService class raises the SelectingProvider event when either the IsCurrentUserInRole method or the GetRolesForCurrentUser method of the RoleService class is called.

You use the User property to retrieve information about the logged-in user. To retrieve role information through a non-default role provider, set the ProviderName property to the name of the role provider that you want the RoleService object to use.

The following example shows an event handler for the SelectingProvider event. The event handler uses the SelectingProviderEventArgs object to check the user name and to set the role provider to use. The event handler is bound to the SelectingProvider event in the Application_Start method of the Global.asax file.

void Application_Start(object sender, EventArgs e) 
{
    System.Web.ApplicationServices.RoleService.SelectingProvider += 
        new EventHandler<System.Web.ApplicationServices.SelectingProviderEventArgs>(RoleService_SelectingProvider);
}

void RoleService_SelectingProvider
    (object sender, System.Web.ApplicationServices.SelectingProviderEventArgs e)
{
    if (e.User.Identity.Name.IndexOf("@example.com") > 0)
    {
        e.ProviderName = "EmployeeRoleProvider";
    }
    else
    {
        e.ProviderName = "CustomerRoleProvider";
    }
}

System.Object
  System.EventArgs
    System.Web.ApplicationServices.SelectingProviderEventArgs

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
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