<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="Name 1"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br/>
<asp:Label ID="Label2" runat="server" Text="Address 1"></asp:Label>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br/>
<br />
<asp:Button ID="Button1" runat="server" Text="copy" />
<br />
<asp:Label ID="Label3" runat="server" Text="Name 1 duplicate"></asp:Label>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br/>
<asp:Label ID="Label4" runat="server" Text="Address duplicate"></asp:Label>
<asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br/>
</div>
</form>
</body>