SelectingProviderEventArgs.User 屬性

public:
 property System::Security::Principal::IPrincipal ^ User { System::Security::Principal::IPrincipal ^ get(); };

public System.Security.Principal.IPrincipal User { get; }

member this.User : System.Security.Principal.IPrincipal

Public ReadOnly Property User As IPrincipal

屬性值

一個包含已認證使用者的物件。

範例

以下範例展示了該 SelectingProvider 事件的事件處理程序。 事件處理程序會利用物件 SelectingProviderEventArgs 檢查使用者名稱並設定角色提供者使用。 事件處理程式會以 Global.asax 檔案的方法綁定事件SelectingProviderApplication_Start。

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";
    }
}

Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
    AddHandler System.Web.ApplicationServices.RoleService.SelectingProvider, _
        AddressOf Me.RoleService_SelectingProvider
End Sub

Sub RoleService_SelectingProvider _
(ByVal sender As Object, _
 ByVal e As System.Web.ApplicationServices.SelectingProviderEventArgs)

    If (e.User.Identity.Name.IndexOf("@example.com") > 0) Then
        e.ProviderName = "EmployeeRoleProvider"
    Else
        e.ProviderName = "CustomerRoleProvider"
    End If
End Sub

備註

你可以利用這個 User 屬性在事件期間 SelectingProvider 取得關於使用者的資訊。

另請參閱

• Windows 通訊基礎角色服務概述