学习遇到的问题

无敌，搞忘贴代码了。
<%@ Page Language="VB" %>
<script language="vb" runtat=server>
        sub page_load(sender as object,e as eventargs)
            email.text=""
        end sub
</script>
<html>
<head>
</head>
<body>
    <form method="post" runat="Server">
        <tr>
        <td>
            邮件：<asp:TextBox id="email" runat="server"></asp:TextBox>
        </td>
        <td>
            <asp:RequiredFieldValidator id="emailReqVal" runat="server" Font-Size="12" Font-Name="Verdana" ValidationExpression="^[\w-]+@[\w-]+\.(com|net|org|edu|mil)$" Display="static" ErrorMessage="Email. " ControlToValidate="email">
        jjdfdj
        </asp:RequiredFieldValidator>
        </td>
        </tr>
        <p>
            <asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
        </p>
    </form>
</body>
</html>

解决方案 »

  1.   

    <%@ Page Language="VB" %>
    <script language="vb" runtat=server>
    sub page_load(sender as object,e as eventargs)
    if page.ispostback then            
    email.text=""
    end if
            end sub
    </script>
    <html>
    <head>
    </head>
    <body>
        <form method="post" runat="Server">
            <tr>
            <td>
                邮件：<asp:TextBox id="email" runat="server"></asp:TextBox>
            </td>
            <td>
                <asp:RequiredFieldValidator id="emailReqVal" runat="server" Font-Size="12" Font-Name="Verdana" ValidationExpression="^[\w-]+@[\w-]+\.(com|net|org|edu|mil)$" Display="static" ErrorMessage="Email. " ControlToValidate="email">
            jjdfdj
            </asp:RequiredFieldValidator>
            </td>
            </tr>
            <p>
                <asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
            </p>
        </form>
    </body>
    </html>
      

  2.   

    <script language="vb" runtat=server>
    看清楚了
      

  3.   

    to aaronhoo(胡操) 
    我跟你写得一样呀。