How do I implement a segmented Text box in c# that enforces user to enter values in specific format?

Question

I need to implement a text box in windows forms where users must follow the constraint of the format of the values. For example, I want to force them to enter numbers in format: 00-000-0-0000, and I want the dashes to be present in the text box. I thought these are called segmented or formatted text input, but found nothing in google about it. Any sort of hint is appreciated.

Answer 1

You're looking for MaskedTextBox which is exactly designed for such cases, you can find more info about it in MSDN

For your sample you just need to set the Mask property of MaskedTextBox to the format you provided:

maskedTextBox1.Mask = "00-000-0-0000";