Validate 2 textboxes - 1 must be filled in

[davida37]

Hi there,

I am using VS2005 - .NET framework 2.

I have 2 textboxes on a form:
- txtEmailAddr
- txtCustomerNumber

I need to be able to validate that either 1 is populated. I can find lots of examples of validating all fields seperately i.e. :

<asp:textbox id="txtEmailAddr" runat="server" size="40"></asp:textbox><asp:requiredfieldvalidator id="rvEmailAddr" runat="server" display="None" errormessage="Please provide EmailAddr" controltovalidate="txtEmailAddr"></asp:requiredfieldvalidator>

..But I cannot find conditional validation - i.e. if 1 out of the 2 is filled in.

I assume I need a custom validator? but kind find good examples.

Please help.

thanks
david

 

[jmeckley]

use a custom validator and place your logic in the validation event. NOTE: unless you define some custom js to validate the client as well, the controls will only be validated on the server. so if client validation fails due to some other control, this custom validation won't execute.

Jason Meckley
Programmer
Specialty Bakers, Inc.

 

[jbenson001]

I would just use javascript for this situation.