1         /// 
 2         /// 文件分割方法 3         /// 
 4         /// 要分割的文件 5         /// 目标目录 6         /// 分割后的小文件名 7         public void SplitFile(string sourceFile,string desDir, string[] TempExtra) 8         { 9             int iFileSize = 9 * 1024;10             if (Directory.Exists(desDir))11                 Directory.Delete(desDir, true);12             else13                 Directory.CreateDirectory(desDir);14             FileStream SplitFileStream = new FileStream(sourceFile, FileMode.Open);15             BinaryReader SplitFileReader = new BinaryReader(SplitFileStream);16             byte[] TempBytes;17             int iFileCount = (int)(SplitFileStream.Length / iFileSize);18             if (SplitFileStream.Length % iFileSize != 0) iFileCount++;19             for (int i = 1; i <= iFileCount; i++)20             {21                 string sTempFileName = desDir + @"\" + i.ToString().PadLeft(4, '0') + "." + TempExtra[TempExtra.Length - 1];22                 23                 FileStream TempStream = new FileStream(sTempFileName, FileMode.OpenOrCreate);24                 BinaryWriter TempWriter = new BinaryWriter(TempStream);25                 TempBytes = SplitFileReader.ReadBytes(iFileSize);26                 TempWriter.Write(TempBytes);27                 TempWriter.Close();28                 TempStream.Close();29             }30             SplitFileReader.Close();31             SplitFileStream.Close();32         }

1          /// 
 2         /// 文件合并 3         /// 
 4         /// 要合并为一个文件的目录 5         /// 要合并成的目标文件 6         public void MergeFile(string sDirectoryName, string desFile) 7         { 8             string[] arrFileNames = Directory.GetFiles(sDirectoryName); 9             int iSumFile = arrFileNames.Length;10             FileStream AddStream = new FileStream(desFile, FileMode.OpenOrCreate);11             BinaryWriter AddWriter = new BinaryWriter(AddStream);12             for (int i = 0; i < iSumFile; i++)13             {14                 FileStream TempStream = new FileStream(arrFileNames[i], FileMode.Open);15                 BinaryReader TempReader = new BinaryReader(TempStream);16                 AddWriter.Write(TempReader.ReadBytes((int)TempStream.Length));17                 TempReader.Close();18                 TempStream.Close();19             }20             AddWriter.Close();21             AddStream.Close();22         }