PasswordRecovery.OnVerifyingUser(LoginCancelEventArgs) 方法

定义

引发 VerifyingUser 事件。

protected:
 virtual void OnVerifyingUser(System::Web::UI::WebControls::LoginCancelEventArgs ^ e);
protected virtual void OnVerifyingUser (System.Web.UI.WebControls.LoginCancelEventArgs e);
abstract member OnVerifyingUser : System.Web.UI.WebControls.LoginCancelEventArgs -> unit
override this.OnVerifyingUser : System.Web.UI.WebControls.LoginCancelEventArgs -> unit
Protected Overridable Sub OnVerifyingUser (e As LoginCancelEventArgs)

参数

e
LoginCancelEventArgs

包含事件数据的 CancelEventArgs

示例

下面的代码示例创建实现 方法的OnVerifyingUser自定义PasswordRecovery控件。 自定义类仅调用 方法的基本 OnVerifyingUser 实现。

<%@ page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    class CustomPasswordRecovery : PasswordRecovery
    {
        override protected void OnVerifyingUser(System.Web.UI.WebControls.LoginCancelEventArgs e)
        {
            base.OnVerifyingUser(e);
        }
    }
    
    // Add the custom password recovery control to the page.
    void Page_Init(object sender, EventArgs e)
    {
        CustomPasswordRecovery passwordRecoveryControl = new CustomPasswordRecovery();
    
        passwordRecoveryControl.ID = "passwordRecoveryControl";
    
        PlaceHolder1.Controls.Add(passwordRecoveryControl);
    
    }
        
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <p>
        <asp:placeholder id="PlaceHolder1" 
          runat="server">
        </asp:placeholder>
        &nbsp;
      </p>
    </form>
  </body>
</html>
<%@ page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    Class CustomPasswordRecovery
        Inherits PasswordRecovery
        
        Overloads Sub OnVerifyingUser(ByVal e As System.Web.UI.WebControls.LoginCancelEventArgs)
            MyBase.OnVerifyingUser(e)
            
        End Sub
        
    End Class

    ' Add the custom password recovery control to the page.
    Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs)
    
        Dim passwordRecoveryControl As New CustomPasswordRecovery
        
        passwordRecoveryControl.ID = "passwordRecoveryControl"
        
        PlaceHolder1.Controls.Add(passwordRecoveryControl)
        
    End Sub
    
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
      <p>
        <asp:placeholder id="PlaceHolder1" 
          runat="server">
        </asp:placeholder>
        &nbsp;
      </p>
    </form>
  </body>
</html>

注解

当用户 OnVerifyingUser 在初始屏幕上提交用户名后,以及成员资格提供程序验证用户名之前,将调用 方法。 默认实现引发 VerifyingUser 事件。

引发事件时,将通过委托调用事件处理程序。 有关详细信息,请参阅 处理和引发事件

OnVerifyingUser 方法还允许派生类对事件进行处理而不必附加委托。 这是在派生类中处理事件的首选技术。

继承者说明

在派生类中重写 OnVerifyingUser(LoginCancelEventArgs) 时,一定要调用基类的 OnVerifyingUser(LoginCancelEventArgs) 方法,以便已注册的委托对事件进行接收。

适用于

另请参阅