CustomValidator - Validate 2 control - Popup Form

[mSchmidt]

Hi iam trying to create a CustomValidator which should validate 2 fields within a RadGrids Popup edit window.

Here is the Custom Validator

<asp:CustomValidator runat="server" ErrorMessage="Indtast en pris"
                        Display="Dynamic"  onservervalidate="Unnamed1_ServerValidate"></asp:CustomValidator>

And the method bound to it:

 protected void Unnamed1_ServerValidate(object source, ServerValidateEventArgs args)

However the problem is i cant seem to get references to the controls which i want to validate.
How do i get references to the controls which are in the popup window ?

[mSchmidt]

Solved it my self

            RadNumericTextBox stndPris = ((Control)source).FindControl("IngrDec1") as RadNumericTextBox;
            RadNumericTextBox kostPris = ((Control)source).FindControl("IngrDec2") as RadNumericTextBox;
            if (stndPris.Value.HasValue || kostPris.Value.HasValue )
            {
                args.IsValid = true;
            }
            else
            {
                args.IsValid = false;
            }