代码
<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>注册验证</title> <style type="text/css"> .body { margin:0; padding:0; text-align:center; } .div_cont { margin:0 auto; padding:0; width:500px; } .tab_theme { font-size:15px; text-align:left; font-weight:bold; } .tab_martop { margin-top:10px; } .tab_control { font-size:13px; text-align:left; } .td_light { line-height:25px; } .td_left { width:100px; text-align:left; } .td_right { width:300px; padding-right:6px; } </style></head><body> <form id="form1" runat="server"> <div class="div_cont tab_martop"> <table class="tab_theme tab_martop" cellpadding="0" cellspacing="0"> <tr> <td> 验证不为空: </td> </tr> </table> <table class="tab_control" cellpadding="0" cellspacing="0"> <tr> <td class="td_left td_light"> 用户名： </td> <td class="td_right td_light"> <asp:TextBox ID="txt_name" runat="server" Width="100%"></asp:TextBox> </td> </tr> <tr> <td class="td_left"> </td> <td class="td_right"> <asp:RequiredFieldValidator ID="rfv_name" runat="server" ControlToValidate="txt_name" Display="Dynamic" ErrorMessage="用户名不能为空！"></asp:RequiredFieldValidator> </td> </tr> </table> <table class="tab_theme tab_martop" cellpadding="0" cellspacing="0"> <tr> <td> 指定正则表达式的验证: </td> </tr> </table> <table class="tab_control" cellpadding="0" cellspacing="0"> <tr> <td class="td_left td_light"> Email： </td> <td class="td_right td_light"> <asp:TextBox ID="txt_email" runat="server" Width="100%"></asp:TextBox> </td> </tr> <tr> <td class="td_left"> </td> <td class="td_right"> <asp:RegularExpressionValidator ID="rev_email" runat="server" ControlToValidate="txt_email" Display="Dynamic" ValidationExpression="^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$" ErrorMessage="电邮地址的格式不正确！"></asp:RegularExpressionValidator> </td> </tr> </table> <table class="tab_theme tab_martop" cellpadding="0" cellspacing="0"> <tr> <td> 所填写内容不能是指定内容: </td> </tr> </table> <table class="tab_control" cellpadding="0" cellspacing="0"> <tr> <td class="td_left td_light"> 城市： </td> <td class="td_right td_light"> <asp:DropDownList ID="drop_city" runat="server" Width="200px"> <asp:ListItem Text="请选择..."></asp:ListItem> <asp:ListItem Text="北京"></asp:ListItem> <asp:ListItem Text="天津"></asp:ListItem> </asp:DropDownList> </td> </tr> <tr> <td class="td_left"> </td> <td class="td_right"> <asp:CompareValidator ID="cv_maxdeg" runat="server" ControlToValidate="drop_city" Display="Dynamic" Type="String" Operator="NotEqual" ValueToCompare="请选择..." ErrorMessage="请选择城市!"></asp:CompareValidator> </td> </tr> </table> <table class="tab_theme tab_martop" cellpadding="0" cellspacing="0"> <tr> <td> 验证两个textbox的内容是否相同: </td> </tr> </table> <table class="tab_control" cellpadding="0" cellspacing="0"> <tr> <td class="td_left td_light"> 密码： </td> <td class="td_right td_light"> <asp:TextBox ID="txt_pwd" runat="server" Width="100%" TextMode="Password"></asp:TextBox> </td> </tr> <tr> <td class="td_left td_light"> 再次输入密码： </td> <td class="td_right td_light"> <asp:TextBox ID="txt_entpwd" runat="server" Width="100%" TextMode="Password"></asp:TextBox> </td> </tr> <tr> <td class="td_left"> </td> <td class="td_right"> <asp:CompareValidator ID="cv_pwd2" runat="server" ControlToCompare="txt_pwd" ControlToValidate="txt_entpwd" ErrorMessage="两次输入的密码不正确！"></asp:CompareValidator> </td> </tr> </table> <table class="tab_control" cellpadding="0" cellspacing="0"> <tr> <td class="td_left"> </td> <td class="td_right" style="text-align:right;"> <asp:Button ID="Button1" runat="server" Text="提交" /> </td> </tr> </table> </div> </form></body></html>
来源：https://www.cnblogs.com/infim/archive/2010/09/06/1819513.html