using System;

public class Program

{

    public static void Main()

    {

        string FirstName="afefwe_%@!fe O’Donnell";

        string LastName= @"All my exes live in 

Texas";

        string fname = new System.Text.RegularExpressions.Regex(@"[^a-zA-Z0-9 '""_,\-]").Replace((FirstName??"").Replace("‘", "'").Replace("’", "'").Replace("“", "\"").Replace("”", "\"").ToUpper(), string.Empty);

        string lname = new System.Text.RegularExpressions.Regex(@"[^a-zA-Z0-9 '""_,\-]").Replace((LastName ?? "").Replace("‘", "'").Replace("’", "'").Replace("“", "\"").Replace("”", "\"").ToUpper(), string.Empty);

        Console.WriteLine(FirstName + " : " + fname);

        Console.WriteLine(LastName + " : " + lname);

    }

}