WinForms MaskedTextBox to accept certain chars

Question

I have a MaskedTextBox that accepts alpha numeric chars but I also want to accept brackets "()". How can I change the mask to accepts brackets also?

Whats is your format of the numbers? – Mitja Bonca Aug 23 '11 at 12:46 — Mitja Bonca, Aug 23 '11 at 12:46

score 1 · Answer 1 · edited May 23 '17 at 11:55

See this answer to a similar question:

How to set Regex Expression as the Mask for a MaskedTextBox in C#?

Instead of using a mask, you should probably just use regular validation, and then you can use the regular expressions directly. Make sure that the CausesValidation property of the (regular, not masked) textbox is true, then intercept the Validating event and if the regular expression doesn't match, set the CancelEventArgs.Cancel to true.

score 0 · Answer 2 · answered Aug 23 '11 at 13:19

0

You can simply put this line of code into form constructor:

 maskedTextBox1.Mask = "(000)000.000";

answered Aug 23 '11 at 13:19

Mitja Bonca

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But I need to let the user insert the brackets anywhere in the text. – Cornel Aug 23 '11 at 15:16

WinForms MaskedTextBox to accept certain chars

2 Answers2

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