Required field validator 1

[boatdrinks]

I have a drop-down box and a textbox. I would like to set the validator of the textbox to require a value only if a specific value is selected in the drop-down. Is there a way to do this?

 

[tgreer]

Yes. Server-side:

if (ddlMyDropDown.SelectedValue == "whatever")
{
  vldMyRequiredFieldValidator.ControlToValidate = txtMyTextBox;
}

Then, NEXT TIME they submit, that textbox will require a value.



Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting

 

[boatdrinks]

Do you have any idea what it would look like in VB, and should this line go into the page_load?

 

[tgreer]

Nope, I don't do VB. It should look very similar.

I would put this code in the dropdownlist's SelectedIndexChanged event handler.

That way you can conditionally set/change the validator when the user makes changes to the dropdownlist.



Thomas D. Greer

http://www.tgreer.com

Providing PostScript & PDF
Training, Development & Consulting