How to display textbox?

Question

C++ / C#

Good afternoon!
Can't figure out how to implement?
There is a textbox, the string 123456789 is entered into it, how can I make it so that 123 456 789 is displayed in the textbox, but the string remains 123456789

Answer 1

Use MaskedTextBox
https://docs.microsoft.com/en-us/dotnet/api/system...