PasswordRecovery.OnVerifyingUser(LoginCancelEventArgs) 方法

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)

參數

範例

以下程式碼範例建立一個 PasswordRecovery 自訂控制項來實作此 OnVerifyingUser 方法。 自訂類別僅呼叫該方法的 OnVerifyingUser 基礎實作。

<%@ 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>

備註

OnVerifyingUser此方法在使用者在初始畫面提交使用者名稱後，且在會員服務提供者驗證使用者名稱之前被呼叫。 預設實作會提升事件。VerifyingUser

發起事件會透過代理呼叫事件處理者。 欲了解更多資訊，請參閱 處理與提升事件。

此 OnVerifyingUser 方法也允許衍生類別在不附加代理的情況下處理事件。 這是在衍生類別中處理事件的首選技術。

給繼承者的注意事項

在導出類別中覆寫 OnVerifyingUser(LoginCancelEventArgs) 時，務必呼叫基底類別的方法 OnVerifyingUser(LoginCancelEventArgs) ，讓註冊代理接收事件。

另請參閱

• ASP.NET 登入控件概觀