/// <summary>
 /// 删除存在的文件
 /// </summary>
 public void DeleteFile(string _dataPath)
 {
     if (DataUtil.IsExits(_dataPath))
     {
         File.Delete(_dataPath);
     }
 }
 /// <summary>
 /// 创建数据包文件流
 /// </summary>
 /// <param name="_dataPath"></param>
 public void CreatDataFileStream(string _dataPath)
 {
     if (DataUtil.IsExits(_dataPath))
     {
         File.Delete(_dataPath);
     }
     DataFileStream   = new FileStream(_dataPath, FileMode.Append);
     DataBinaryWriter = new BinaryWriter(DataFileStream, System.Text.Encoding.UTF8);
 }