How Do I Use Regex To Edit String

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i need to edit a string to look like 4,000,000 using regex and i have been looking around it, but can find no way on it please help i know that i have to declare

using System.Text.RegularExpressions

but from that i have no idea , i have been playing with regex, but i want to as i insert the values into the textbox that it already adds the "," where needed

Posted 18-Feb-14 23:02pm

MashaJoey

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CPallini · Accepted Answer · 2014-02-18T23:05:00

Solution 1

Google[^] makes developer's life easier.

Posted 18-Feb-14 23:05pm

CPallini

Comments

Matt T Heffron 19-Feb-14 13:21pm

I don't think that's what OP wants.
It looks like they want the punctuation to happen AS the user inputs digits into a control (WPF TextBox, I'd guess).

MashaJoey 20-Feb-14 5:15am

its not what i wanted, and your correct what you say is what i wanted, but i used that info and compined my windows forms app and created a validation rule that that helped a lot to write, so in a way it helped, i didnt mean to ask for code, more a direction.

.... also google does make a developers life easier