How to validate a confirmation password for the match?

We can use CompareValidator control to validate the confirmation password to check if both password entered by user is same or not (Generally used to register a user in the website).

Password:  <asp:TextBox id="TextBox1" runat="server"  TextMode="Password"></asp:TextBox>
Confirm Password: <asp:TextBox id="TextBox2" runat="server" TextMode="Password"></asp:TextBox>

            <asp:CompareValidator id="CompareValidator1" 
             runat="server" ErrorMessage="Passwords do not match!" 
             ControlToValidate="TextBox2"  
             ControlToCompare="TextBox1" ></asp:CompareValidator>

In this case if user will not enter same password in both box, the form will not be submitted.