验证控件

最新推荐文章于 2023-11-09 23:46:30 发布

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#textbox #asp #server #button #object #正则表达式

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本文介绍ASP.NET中各种表单验证控件的应用实例，包括必填项验证、正则表达式验证、比较验证、数值范围验证及自定义验证等，通过实际代码展示如何确保用户输入的有效性和安全性。

RequiredFieldValidator 必添选项
RegularExcepressionValidator 正则表达式
CompareValidator 验证信息
CustomValidator 自定义
RangeValidator 数字范围

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class Default2 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs e)

{

if (e.Value == "服务部" || e.Value == "技术部")

{

e.IsValid = true;

}

else

{

e.IsValid = false;

}

protected void Button1_Click(object sender, EventArgs e)

{

if (IsValid)

{

Response.Write("<script>alert('验证成功')</script>");

}

else

{

Response.Write("<script>alert('验证shibai')</script>");

}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

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

</head>

<body>

<div>

<tr>

名字</td>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></td>

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1"

ErrorMessage="*"></asp:RequiredFieldValidator></td>

</tr>

<tr>

密码</td>

<asp:TextBox ID="TextBox2" runat="server" TextMode="Password"></asp:TextBox></td>

<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox2"

ErrorMessage="*"></asp:RequiredFieldValidator></td>

</tr>

<tr>

验证密码</td>

<asp:TextBox ID="TextBox3" runat="server" TextMode="Password"></asp:TextBox></td>

<asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="TextBox2"

ControlToValidate="TextBox3" ErrorMessage="验证正确？"></asp:CompareValidator></td>

</tr>

<tr>

年龄</td>

<asp:TextBox ID="Tbage" runat="server"></asp:TextBox></td>

<asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="Tbage"

ErrorMessage="1到100" MaximumValue="99" MinimumValue="1"></asp:RangeValidator></td>

</tr>

<tr>

邮件</td>

<asp:TextBox ID="TextBox5" runat="server"></asp:TextBox></td>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox5"

ErrorMessage="格式" ValidationExpression="w+([-+.']w+)*@w+([-.]w+)*.w+([-.]w+)*"></asp:RegularExpressionValidator></td>

</tr>

<tr>

自己定义的</td>

<asp:TextBox ID="TextBox6" runat="server"></asp:TextBox></td>

<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="TextBox6"

ErrorMessage="Cus公司验证" OnServerValidate="CustomValidator1_ServerValidate"></asp:CustomValidator></td>

</tr>

<tr>

错误信息</td>

<asp:ValidationSummary ID="ValidationSummary1" runat="server" />

</td>

</td>

</tr>

<tr>

</td>

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /></td>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>