How can I do that in a maskedtextbox, which already has a mask assigned, and allows numbers and letters to be entered, the letters are only capital letters?
How can I do that in a maskedtextbox, which already has a mask assigned, and allows numbers and letters to be entered, the letters are only capital letters?
To convert all the entered letters to a MaskedTextBox you can add a symbol greater than to the mask at the beginning, as explained here MSDN . For example, to allow an entry as 1522-1542-MK12 could be something like:
>CCCC-CCCC-CCCC
Or, following exactly the format of your example:
0000-0000->LL00