Use Regular expression to check if a string is a number : Validation « Regular Expressions « C# / C Sharp






  1. C# / C Sharp
  2. Regular Expressions
  3. Validation

Use Regular expression to check if a string is a number

    
using System;
using System.IO;
using System.Text.RegularExpressions;

public sealed class Utils
{

    public static bool IsNumeric(string input)
    {
        Regex r = new Regex(@"^-?[0-9]{1,}\.?[0-9]{0,}$");
        if (r.Match(input).Success)
            return true;
        else
            return false;
    }
}








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