comparing two fields in validation

[TheConeHead]

I have two fields where if they are both blank it is ok, but if one is filled out then the other one must be filled out also, How would I validate this with asp.net? Comparevalidator? if so, how?

 

[DotNetGnat]

something like this:

<asp:CompareValidator id="valCompare" runat="server"
    ControlToValidate="textbox1" ControlToCompare="textbox2"
    Operator="Equals"
    ErrorMessage="your error message"
    Display="dynamic">
</asp:CompareValidator>

make changes to adapt to your requirements...

-DNG

 

[TheConeHead]

hmmm - I think that is going to make sure the two boxes are equal... I just want to make sure that if 1 has a value then they both have a value...