怎么样把下面这段代码的页面居中显示啊？

我尝试过好多方法都不行
<%@ Page language="c#" Codebehind="adduser.aspx.cs" AutoEventWireup="false" Inherits="ShiYu.adduser" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>adduser</title>
<LINK href="Style.css" type="text/css" rel="stylesheet">
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:Label id="Label1" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" runat="server">请输入用户名:</asp:Label>
<asp:RequiredFieldValidator id="RequiredFieldValidator2" style="Z-INDEX: 111; LEFT: 336px; POSITION: absolute; TOP: 48px"
runat="server" ErrorMessage="请输入密码" ControlToValidate="PassWord"></asp:RequiredFieldValidator>
<asp:TextBox id="RePassWord" style="Z-INDEX: 107; LEFT: 128px; POSITION: absolute; TOP: 72px"
runat="server" TextMode="Password" BorderStyle="Dotted" BackColor="#99CC99"></asp:TextBox>
<asp:TextBox id="PassWord" style="Z-INDEX: 106; LEFT: 128px; POSITION: absolute; TOP: 40px" runat="server"
TextMode="Password" BorderStyle="Dotted" BackColor="#99CC99"></asp:TextBox>
<asp:Label id="Label3" style="Z-INDEX: 103; LEFT: 8px; POSITION: absolute; TOP: 72px" runat="server">请再次输入密码:</asp:Label>
<asp:Label id="Label2" style="Z-INDEX: 102; LEFT: 8px; POSITION: absolute; TOP: 40px" runat="server">请输入密码:</asp:Label>&nbsp;
<asp:Label id="Label4" style="Z-INDEX: 104; LEFT: 8px; POSITION: absolute; TOP: 112px" runat="server">请选择用户权限:</asp:Label>
<asp:TextBox id="UserName" style="Z-INDEX: 105; LEFT: 128px; POSITION: absolute; TOP: 8px" runat="server"
BorderStyle="Dotted" BackColor="#99CC99" Width="144px"></asp:TextBox>
<asp:DropDownList id="Permission" style="Z-INDEX: 108; LEFT: 136px; POSITION: absolute; TOP: 112px"
runat="server" BackColor="#99CC99"></asp:DropDownList>
<asp:Button id="Button1" style="Z-INDEX: 109; LEFT: 72px; POSITION: absolute; TOP: 160px" runat="server"
Text="添加" CssClass="button" BackColor="#99CC99" BorderColor="White" BorderStyle="Dotted"></asp:Button>
<asp:RequiredFieldValidator id="RequiredFieldValidator1" style="Z-INDEX: 110; LEFT: 336px; POSITION: absolute; TOP: 16px"
runat="server" ErrorMessage="请输入用户名" ControlToValidate="UserName"></asp:RequiredFieldValidator>
<asp:CompareValidator id="CompareValidator1" style="Z-INDEX: 112; LEFT: 328px; POSITION: absolute; TOP: 80px"
runat="server" ErrorMessage="两次输入发密码不一致" ControlToValidate="RePassWord" ControlToCompare="PassWord"></asp:CompareValidator>
</form>
</body>
</HTML>

解决方案 »

  1.   

    <body MS_POSITIONING="GridLayout" align="center">
    一个问题不用题两次吧
      

  2.   

    在页面中用一个大的<table align="center">
                          <tr>
                              </td>
                            
                               </td>
                          </tr> 
                       </table>
    你用的所有控件尽量不要用绝对定位：style="Z-INDEX: 110; LEFT: 336px; POSITION: absolute; TOP: 16px"这样很不容易控制显示，除非你很清楚绝对位置，尽量打好框架