ASP.NET中怎么弹出对话框及怎以提交?

<%@ Page Language="C#" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.OleDb" %>
<script runat="server">    // Insert page code here
    //
    
    void Button1_Click(object sender, EventArgs e) {
    
    if ( (TextBox1.Text=="") && (TextBox2.Text=="" ))
     {
        Label3.Text="incorrect"; //我想在这里弹出对话框显示错误信息
     }
     else aa.submit; //我相在这要提交表单
    }</script>
<html>
<head>
</head>
<body>
    <form id="aa" action="yz.aspx" method="post" runat="server">
        <table style="WIDTH: 100%; HEIGHT: 100%">
            <tbody>
                <tr>
                    <td>
                    </td>
                    <td rowspan="1">
                        <span> 
                        <p>
                        </p>
                        </span></td>
                    <td>
                    </td>
                </tr>
                <tr>
                    <td>
                    </td>
                    <td align="middle">
                        <p>
                            <asp:Label id="Label1" runat="server">用户名称:</asp:Label>
                            <asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
                        </p>
                        <p>
                            <asp:Label id="Label2" runat="server">用户密码:</asp:Label>
                            <asp:TextBox id="TextBox2" runat="server" TextMode="Password"></asp:TextBox>
                        </p>
                        <p>
                            <asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="登陆"></asp:Button>
                            &nbsp;<asp:Button id="Button2" runat="server" Text="取消"></asp:Button>
                            &nbsp;&nbsp;<br />
                            <asp:Label id="Label3" runat="server">Label</asp:Label>
                        </p>
                    </td>
                    <td>
                    </td>
                </tr>
                <tr>
                    <td>
                    </td>
                    <td>
                    </td>
                    <td>
                    </td>
                </tr>
            </tbody>
        </table>
        <!-- Insert content here -->
    </form>
</body>
</html>

解决方案 »

  1.   

    this.Response.write("<script>alert('错误信息')</script>");
      

  2.   

    void Button1_Click(object sender, EventArgs e) {
        
        if ( (TextBox1.Text=="") && (TextBox2.Text=="" ))
         {
            Label3.Text="incorrect"; //我想在这里弹出对话框显示错误信息
            Response.Write("<script>alert('你的提示信息')</script>")；
         }
         else aa.submit; //我相在这要提交表单
        }
      

  3.   

    this.Response.write("<script language='vbscript'>Msgbox 'aaa'</script>");
    这对,我是用VBSCRIPT
      

  4.   

    提交的方法是:
    把:
    aa.submit
    改成:
    document.all.tags("form")[1].submit;
      

  5.   

    this.Response.write("<script language='vbscript'>Msgbox 'aaa'</script>");
    不对,出错,我是用VBSCRIPT
      

  6.   

    document.all.tags("form")[1].submit; [1]是什么意思;