using System;

public class Program

{

    public static void Main()

    {

        String TargetName = "    Annex A    ";

        String text1 = "ann a";

        Console.WriteLine(MatchedTarget(TargetName, text1));

        bool MatchedTarget(String Target, String text)

        { 

            return String.Equals(text.Trim(), TargetName.Trim(), System.StringComparison.OrdinalIgnoreCase)||

                text.ToLower().Trim().Contains(TargetName.ToLower().Trim()) ||

                text.Trim().Length.Equals(TargetName.Trim().Length);

        }

        //  if (result)

            //Console.WriteLine("They are equal");

        //else

            //Console.WriteLine("They are not equal");

    }

    }

​