Hi

We need MaskedTextBox to accept uppercase letters only, which can be achieved by defining custom mask rule for it. However, that requires the user to enter uppercase letters manually. Can a feature request be made for the functionality that even if user enters lowercase letters, it can be displayed as uppercase letters?

Example use case of this feature - Postal codes input is one of the example use cases. It requires letters to be uppercase, and when user provides lowercase input, it either needs to be processed separately to convert to uppercase or the input gets ignored with default behavior.