Well, because you are *updating* the numbers in the text-box after the user
inputs, then you'll have to remove your formatting and then reapply your
formatting to get everything to work.
using System;
public class TestFormatting {
private static void Main(string[] args) {
Console.WriteLine(FormatNumber(""));
Console.WriteLine(FormatNumber("1"));
Console.WriteLine(FormatNumber("10"));
Console.WriteLine(FormatNumber("100"));
Console.WriteLine(FormatNumber("1000"));
Console.WriteLine(FormatNumber("10000"));
Console.WriteLine(FormatNumber("100000"));
Console.WriteLine(FormatNumber("1000000"));
Console.WriteLine(FormatNumber("10000000"));
Console.WriteLine(FormatNumber(""));
Console.WriteLine(FormatNumber("1"));
Console.WriteLine(FormatNumber("10"));
Console.WriteLine(FormatNumber("100"));
Console.WriteLine(FormatNumber("1,000"));
Console.WriteLine(FormatNumber("10,000"));
Console.WriteLine(FormatNumber("100,000"));
Console.WriteLine(FormatNumber("1,000,000"));
Console.WriteLine(FormatNumber("10,000,000"));
}
private static string FormatNumber(string number) {
return FormatNumber(number, 3);
}
private static string FormatNumber(string number, int groupLength) {
if ( number == null || number.Length == 0 ) { return ""; }
number = number.Replace(",", ""); // Get rid of old formatting
int commas = (number.Length-1)/groupLength;
int lead = (number.Length-1)%groupLength+1;
string formatted = number.Substring(0, lead);
for(int i = 0; i < commas; i++) {
formatted += "," + number.Substring(i*groupLength + lead,
groupLength);
}
return formatted;
}
}
--
Justin Rogers
DigiTec Web Consultants, LLC.
Blog:
http://weblogs.asp.net/justin_rogers
"John Sutor" <jo********@cinfin.com> wrote in message
news:%2****************@TK2MSFTNGP15.phx.gbl...
I need some code that, on each keyup event, will take all of the numbers
typed into the text box and format as they type to look like this
100
1,000
10,000
100,000
1,000,000
John S
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