Question

I am usingh VB.net, I have two textboxes please see below:

<tr id="trCheckedBy2" runat="server">
    <td>
    Application Checked by 1:
    </td>
    <td>
    <asp:TextBox ID="CheckedBy1TextBox" runat="server" Text='<%# Bind("CheckedBy1") %>' />
    </td>
    <td>
    Application Checked by 2:
    </td>
    <td >
    <asp:TextBox ID="CheckedBy2TextBox"  runat="server" Text='<%# Bind("CheckedBy2") %>' />
    </td>                                
</tr>

Now I want to give error message “Username can not be same” when CheckedBy2TextBox text is same as CheckedBy1TextBox. It would be good if we can use .net validator.

Please suggest!

Thanks.

Best Regards,
MS

Answer 1

Use a CompareValidator control with the Operator property set to NotEqual:

<asp:CompareValidator runat="server"
                      ControlToValidate="ID_Of_First_TextBox"
                      ControlToCompare="ID_Of_Second_TextBox"
                      Operator="NotEqual"
                      ErrorMessage="Error_Message_Goes_Here" />