Will this work?

public static void SaveBan(Character Value, Main.GameClient GC)
        {
            if (File.Exists(@"C:\OldCODB\Ban\Ban.txt"))
            {
                string[] AllLines = System.IO.File.ReadAllLines(@"C:\OldCODB\Ban\Ban.txt");
                int Ban = AllLines.Length;
                for (int x = 0; x < Ban; x++)
                {
                    string[] BanAccount = AllLines[x].Split('#');
                    string CharID = BanAccount[0];
                    string Name = BanAccount[1];
                    if (BanAccount.Contains(GC.MyChar.EntityID.ToString()) && CharID.Contains(GC.MyChar.EntityID.ToString()))
                    {

                    }
                }
            }
        }