Check string is decimal with 2 decimal places

Question

I have a textbox that a user enters a number into. I need to ensure that the number is at most 5 numbers before the decimal place and mandatory 2 digits after. The number must always have 2 digits after the decimal point. What Regex could I use to check this? (The solution is in C#)

have you looked at the regex generators online? It is something like: `[0-9]+.{2}[0-9]` — Callum Linington, Jun 07 '16 at 07:41
Refer this could be possible duplicate with two digits http://stackoverflow.com/questions/1014284/regex-to-match-2-digits-optional-decimal-two-digits — Rahul Hendawe, Jun 07 '16 at 07:43

Dmitry Bychenko · Accepted Answer · 2016-06-07T07:47:50.117

7

Something like this:

  String source = ...;

  if (Regex.IsMatch(source, @"^[0-9]{,5}\.[0-9]{2}$")) {
    //TODO: put relevant code here
  }

If you want at least one digit before decimal point, the pattern will be

  @"^[0-9]{1,5}\.[0-9]{2}$"

edited Jun 07 '16 at 07:47

answered Jun 07 '16 at 07:45

Dmitry Bychenko

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Do not forget to set this answer as accepted then :) – Stacked Jun 07 '16 at 07:51

Badruzzaman · Answer 2 · 2016-06-07T08:17:27.203

1

Just Try this code

        string Value= "12345.63";
        if (Regex.IsMatch(Value, @"^[0-9]{5}\.[0-9]{2}$"))
        {
            Console.WriteLine(Value);
        }
        else
        { 
            Console.WriteLine("Not Match");
        }
        Console.ReadKey();

edited Jun 07 '16 at 08:17

answered Jun 07 '16 at 08:05

Badruzzaman

41
1
7

Check string is decimal with 2 decimal places

2 Answers2