1  /// <summary>
 2         /// 拼接二进制数组
 3         /// </summary>
 4         /// <param name="buffer1"></param>
 5         /// <param name="buffer2"></param>
 6         /// <returns></returns>
 7         public static byte[] Joint(byte[] buffer1, byte[] buffer2)
 8         {
 9             byte[] bufferWhole = new byte[buffer1.Length + buffer2.Length];
10             Buffer.BlockCopy(buffer1, 0, bufferWhole, 0, buffer1.Length);
11             Buffer.BlockCopy(buffer2, 0, bufferWhole, buffer1.Length, buffer2.Length);
12             return bufferWhole;
13         }
14 
15         public static byte[] Joint(byte[] buffer1, byte[] buffer2, byte[] buffer3)
16         {
17             return BufferJointer.Joint(BufferJointer.Joint(buffer1, buffer2), buffer3);
18         }
19 
20         public static byte[] Joint(byte[] buffer1, byte[] buffer2, byte[] buffer3, byte[] buffer4)
21         {
22             return BufferJointer.Joint(BufferJointer.Joint(buffer1, buffer2, buffer3), buffer4);
23         }
24 
25         public static byte[] Joint(byte[] buffer1, byte[] buffer2, byte[] buffer3, byte[] buffer4, byte[] buffer5, byte[] buffer6)
26         {
27             return BufferJointer.Joint(BufferJointer.Joint(buffer1, buffer2, buffer3, buffer4), buffer5, buffer6);
28         }     

 1   class FileHelper
 2     {
 3         // 首先引用API 函数  
 4 
 5         [DllImport("kernel32.dll")]
 6         private static extern IntPtr _lopen(string lpPathName, int iReadWrite);
 7         [DllImport("kernel32.dll")]
 8         private static extern bool CloseHandle(IntPtr hObject);
 9         private const int OF_READWRITE = 2;
10         private const int OF_SHARE_DENY_NONE = 0x40;
11         private readonly IntPtr HFILE_ERROR = new IntPtr(-1);
12 
13 
14         /// <summary>   
15         /// 检查文件是否已经打开   
16         /// </summary>   
17         /// <param name="strfilepath">要检查的文件路径</param>          
18         /// <returns>-1文件不存在,1文件已经打开,0文件可用未打开</returns>   
19         public FileStatus VerifyFileIsOpen(string strfilepath)
20         {
21             string vFileName = strfilepath;
22 
23             // 先检查文件是否存在,如果不存在那就不检查了   
24             if (!File.Exists(vFileName))
25             {
26                 return FileStatus.Inexistence;
27             }
28 
29             // 打开指定文件看看情况   
30             IntPtr vHandle = _lopen(vFileName, OF_READWRITE | OF_SHARE_DENY_NONE);
31             if (vHandle == HFILE_ERROR)
32             { // 文件已经被打开                   
33                 return FileStatus.Opened;
34             }
35             CloseHandle(vHandle);
36 
37             // 说明文件没被打开，并且可用  
38 
39             return FileStatus.Untapped;
40         }
41     }