📄 requirefv.aspx
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="requirefv.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>
<style type="text/css">
.td
{
border-bottom:dotted 1px #dcdcdc;
border-right:dotted 1px #dcdcdc;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div>
<table style="border:solid 1px green;width:40%">
<tr>
<td style="background-color:Green">
<strong><span style="font-size: 14pt; color: #ffffff">非空验证（RequireFieldValidator控件）</span></strong></td>
</tr>
<tr>
<td class="td">
你的姓名：<asp:TextBox ID="tbox" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="require" runat="server" ControlToValidate="tbox"
Display="Dynamic" ErrorMessage="你的姓名没有输入！"></asp:RequiredFieldValidator></td>
</tr>
<tr>
<td class="td"><asp:Button ID="btn" runat="server" OnClick="btn_Click" Text="验证用户名" />
</td>
</tr>
<tr>
<td>
<asp:Label ID="labmessage" runat="server" Visible="False"></asp:Label></td>
</tr>
</table>
</div>
</form>
</body>
</html>
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