Hi everybody,

I have a container based class called cntPhone, which consists of several textboxes. The first textbox has R format and (999) InputMask.

I found a weird behavior. If I go to this textbox, then type something, then delete, what I typed and then try to Save my data, I get a warning, that this field could not be empty. However, if I do not enter this textbox, I do not have this warning. Why it behaves this way?

Thanks in advance.