CODEWITHSUNDEEP
c#
Alin St
Alin St

Reputation: 29

Make Textbox to accept values built of 4 digit blocks

I want to have a textbox that whenever you reached the 4th digit it would add a space automatically and it should do that everytime the 4th digit is inserted.

Ex. 4565 6585 6599 5656 ...

I have tried something like this but most likely it is wrong:

textBox2.Text.ToString(new NumberFormatInfo() { NumberGroupSizes = new[] { 4 }, NumberGroupSeparator = " " });

Any ideas?

Upvotes: 0

Views: 154

Answers (2)

Tim Schmelter
Tim Schmelter

Reputation: 460238

You could use a MaskedTextBox control with a mask like this:

txt.Mask = "0000 0000 0000 0000";

Here is a summary of the syntax.

Upvotes: 3

JohnH
JohnH

Reputation: 2133

You can do this using JavaScript or jQuery.

Please look at this SO entry on "Credit Card Input Form Using jQuery".

Upvotes: 0

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