ASP.NET中 RequiredFieldValidator(非空验证)的使用

转载

mb5fe55a1c73221 2013-03-07 09:33:00

文章标签 ASP.NET 非空验证 html 返回顶部 文章分类 代码人生

ylbtech-ASP.NET-Control-Validator: RequiredFieldValidator(非空验证)的使用

ASP.NET中 RequiredFieldValidator(非空验证)的使用。

1.A,运行效果返回顶部

1.B,源代码返回顶部

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

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

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <h5>登录</h5>
    RequiredFieldValidator：非空验证
    <hr />
        <br />
    重要的属性：<br />
    1,ControlToValidate：要验证的控件<br />
    2,ErrorMessage：错误提示信息<br />
&nbsp;<hr />
    用户账号：<asp:TextBox ID="txtUsername" runat="server"></asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
            ControlToValidate="txtUsername" ErrorMessage="请输入用户名"></asp:RequiredFieldValidator>
        <br />
                密&nbsp;&nbsp;&nbsp;&nbsp;码：<asp:TextBox ID="txtUserpass" 
            runat="server" TextMode="Password"></asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" 
            ControlToValidate="txtUserpass" ErrorMessage="请输入密码"></asp:RequiredFieldValidator>
        <br />
&nbsp;&nbsp;
        <asp:Button ID="btnReset" runat="server" Text="重置" onclick="btnReset_Click" />
&nbsp;&nbsp;
        <asp:Button ID="btnSubmit" runat="server" Text="登录" />
        <br />
    </div>
    </form>
</body>
</html>

/Default.aspx.cs ASP.NET中 RequiredFieldValidator(非空验证)的使用_html View Code

using System;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnReset_Click(object sender, EventArgs e)
    {

        //清空文本框
        //string.Empty 空对象
        txtUsername.Text = string.Empty;
        txtUserpass.Text = string.Empty;
    }
}