Share via

PasswordRecovery.OnUserLookupError(EventArgs) 方法

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

引发 UserLookupError 事件。

protected:
 virtual void OnUserLookupError(EventArgs ^ e);
protected virtual void OnUserLookupError (EventArgs e);
abstract member OnUserLookupError : EventArgs -> unit
override this.OnUserLookupError : EventArgs -> unit
Protected Overridable Sub OnUserLookupError (e As EventArgs)

参数

e
EventArgs

包含事件数据的 EventArgs。

示例

下面的代码示例定义一个自定义 PasswordRecovery 控件，该控件将替代 OnUserLookupError 方法，以在用户输入密码确认问题的错误答案时更改 UserNameTitleText 属性。

<%@ 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 OnAnswerLookupError(EventArgs e)
        {
            QuestionTitleText = "Try again";
            TitleTextStyle.ForeColor = System.Drawing.Color.Red;
            base.OnAnswerLookupError(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 OnAnswerLookupError(ByVal e As EventArgs)
            QuestionTitleText = "Try again"
            TitleTextStyle.ForeColor = System.Drawing.Color.Red
            MyBase.OnAnswerLookupError(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

OnUserLookupError当成员资格提供程序找不到在初始屏幕上输入的用户名时，将调用 方法。 默认实现引发 UserLookupError 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。

OnUserLookupError 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 OnUserLookupError(EventArgs) 时，一定要调用基类的 OnUserLookupError(EventArgs) 方法，以便已注册的委托对事件进行接收。

适用于

另请参阅