Comparing two textbox values in vb.net

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

Mehrdad Afshari · Accepted Answer · 2009-09-18 12:05:39Z

3

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" />

answered Sep 18, 2009 at 12:05

Mehrdad Afshari

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2 Comments

Manoj Singh Over a year ago

If you see my tr id is runat="server" it is not recognizing my comparevalidator. Its giving error " System.Web.UI.HtmlControls.HtmlTableCellCollection must have items of type 'System.Web.UI.HtmlControls.HtmlTableCell'. 'asp:CompareValidator' is of type 'System.Web.UI.WebControls.CompareValidator'."

Mehrdad Afshari Over a year ago

I'm not sure why you are using <tr runat="server"> but if your <tr> tag is runat="server", you should set runat="server" on the <td> too.

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