String - ExtractNumber

A string extension method that extracts the number described by the string object.

Try it

public static void Main()
{	
    string input = "Mwasdf{123c[45z6]6c7v8}";

	//C# Extension Method: String - ExtractNumber
    var output = input.ExtractNumber();

    Console.WriteLine(output);
}

View Source
using System;
using System.Linq;

public static partial class Extensions
{
    /// <summary>
    ///     A string extension method that extracts the number described by @this.
    /// </summary>
    /// <param name="this">The @this to act on.</param>
    /// <returns>The extracted number.</returns>
    public static string ExtractNumber(this string @this)
    {
        return new string(@this.ToCharArray().Where(x => Char.IsNumber(x)).ToArray());
    }
}