to add 2 textbox value show in another textbox without using
to add 2 textbox value show in another textbox without using button click event using on text changed event in textbox
<table class="style1">
<tr>
<td>
a</td>
<td>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
b</td>
<td>
<asp:TextBox ID="TextBox2" runat="server" ontextchanged="TextBox2_TextChanged"></asp:TextBox>
</td>
</tr>
<tr>
<td>
a+b</td>
<td>
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
</td>
</tr>
</table>
textbox3=textbox1+textbox2;
i need it in on textchanged event