表单问题,2个表单其中一个失灵..为啥

我建立了2个表单,分别提交不同的内容..
但是结果,第一个submit按钮失效,当点第二个submit时,终于跳转页面了..
我不清楚问题出在哪了...
HTML code

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="dagl.aspx.cs" Inherits="dagl" Title="无标题页" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolderMain" Runat="Server">
    <div>
    <form action="dazl.aspx" method="get" id="form1" name="form1">    
    <table style="width: 100%; border: 1px solid #FF0000; background-color: #FFFF00">
        <tr>            
            <td>
                <asp:Label ID="Label" runat="server" Text="黄星"></asp:Label>
                <input type="hidden" name="hidden" value="个人档案" />
            </td>
            <td style="width: 155px">
                <input type="submit" value="个人档案" style="width: 150px; height: 80px;" />
            </td>
        </tr>
    </table>    
    </form>
    </div>
    <div>
    <form action="dazl.aspx" method="get" id="form2" name="form2">
    <table style="width: 100%; border: 1px solid #FF0000; background-color: #FFFF00">
        <tr>
            <td style="width: 50%; border: 1px solid #FF0000">
                <asp:TextBox ID="TextBox" runat="server" Width="100%" ></asp:TextBox>
                <input type="hidden" name="hidden" value="个人档案" />
            </td>
            <td style="width: 411px">
                <input type="radio" name="chaxun" value="sID" checked="checked" />工号<br />
                <input type="radio" name="chaxun" value="name" />姓名<br />
                <input type="radio" name="chaxun" value="age" />年龄<br />
                </td>
            <td>
                <input type="submit" value="档案查询" style="width: 150px; height: 100px;" /></td>
        </tr>
    </table>
    </form>
    </div>
</asp:Content>

把两个submit按钮加上不同的name试一下

试了..一样= =...
貌似是runat="server"的问题,可是我不懂..
HTML code

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="dagl.aspx.cs" Inherits="dagl" Title="无标题页" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolderMain" Runat="Server">
    <div>
    <form action="dazl.aspx" method="post" id="form1" name="form1" >    
    <table style="width: 100%; border: 1px solid #FF0000; background-color: #FFFF00">
        <tr>            
            <td>
            
                <input type="hidden" name="hidden" value="个人档案" />
            </td>
            <td>
                <input type="submit" value="个人档案" style="width: 150px; height: 80px;" name="sub1" id="sub1" />
            </td>
        </tr>
    </table>    
    </form>
    </div>
    <div>
    <form action="dazl.aspx" method="post" id="form2" name="form2" >
    <table style="width: 100%; border: 1px solid #FF0000; background-color: #FFFF00">
        <tr>
            <td style="width: 50%; border: 1px solid #FF0000">
                
                <input type="hidden" name="hidden" value="档案查询" />
            </td>
            <td style="width: 411px">
                <input type="radio" name="chaxun" value="sID" checked="checked" />工号<br />
                <input type="radio" name="chaxun" value="name" />姓名<br />
                <input type="radio" name="chaxun" value="age" />年龄<br />
                </td>
            <td>
                <input type="submit" value="档案查询" style="width: 150px; height: 100px;" id="sub2" name="sub2" />
            </td>
        </tr>
    </table>
    </form>
    </div>
</asp:Content>

是asp.net,vs2008环境下编写的...