How get a copy of send feed back in our page?

Question

am having a form:

 

 

<form>

<table cellspacing="2" cellpadding="2" border="0" style="height: 401px; width: 788px; margin-left: 173px; margin-top: 0px;">

<tr><td class="auto-style22"></td><td class="auto-style19">Contact Us Form : FeedBack</td></tr>

<tr><td class="auto-style20">UserId</td> <td class="auto-style18"><asp:TextBox ID="txtus" runat="server" Width="173px" size="9" maxlength="8"/></td></tr>

<tr><td class="auto-style20">Htsc No</td> <td class="auto-style18"><asp:TextBox ID="txthn" runat="server" Width="173px" size="12" maxlength="11"/></td></tr>

<tr><td class="auto-style20">Edc</td> <td class="auto-style18"><asp:TextBox ID="txtedcno" runat="server" Width="173px" size="20" maxlength="15" /></td></tr>

<tr><td class="auto-style20">Email</td> <td class="auto-style18"><asp:TextBox ID="txteml" runat="server" Width="173px"/></td></tr>

<tr><td class="auto-style20">Mobile No</td> <td class="auto-style18"><asp:TextBox ID="txtmbl" runat="server" Width="172px" size="11" maxlength="10" /></td></tr>

<tr><td class="auto-style20">Subject</td> <td class="auto-style18"><asp:TextBox ID="txtsubjct" runat="server" Width="172px" size="30" maxlength="30" /></td></tr>

<tr><td valign="top" class="auto-style20"><b><span class="auto-style21">Message</span></b></td><td> <asp:TextBox ID="txtmsgg" runat="server" TextMode="MultiLine" Height="80px" Width="351px" size="2" maxlength="5" style="text-align: left"/></td></tr>

<tr><td class="auto-style22"></td><td><asp:button ID="btSub" Text="Submit" runat="server" CssClass="Button" OnClick="btSub_Click"/></td></tr>

<tr><td colspan="2" style=" color:red"><asp:Label ID="lbltxt" runat="server" style="font-weight: 700; color: #003300; font-size: medium"/></td></tr>

</table>

</form>

 

In this After submit the feed back form I need a copy for dat..

 

how to do dat?

i need a code