How Can I Write Multiple Text Files At Once Into A Directory.But From Below Code Only One File Is Created.

public static void CreateDirectoryInfo()
     {
         int RecordCountNew = 0;
         string DirectoryPath = @"E:\DattuFiles\";
         string filePath = string.Empty;
         DirectoryInfo directoryInfo = new DirectoryInfo(DirectoryPath);
         if (!directoryInfo.Exists)
         {
             directoryInfo.Create();
         }
         for (int i = 0; i < 10; i++)
         {
             if (RecordCountNew == i)
             {
                 filePath = Path.Combine(DirectoryPath, "Dattu" + i.ToString()+".txt");
             }
             if (filePath != "" && !File.Exists(filePath))
             {
                 File.Create(filePath).Dispose();
             }

             RecordCountNew = RecordCountNew++;

             if (!string.IsNullOrEmpty(filePath))
             {
                 File.AppendAllText(filePath, "this is eating my brain" + Environment.NewLine);
             }
         }
     }