C # file stream copy File

Read-only mode, does not affect the operation of other programs on the file

 Public Static voidCopyFile (stringSourcestringtarget) {            //Create a stream that is responsible for reading            using(FileStream fsread =NewFileStream (source, FileMode.Open, FileAccess.Read)) {                //Create a stream that is responsible for writing                using(FileStream fswrite =NewFileStream (Target, FileMode.OpenOrCreate, FileAccess.Write)) {                    byte[] buffer =New byte[1024x768*1024x768*5]; //because the file may be large, it should be read in a bad way.                     while(true)                    {                        //returns the number of bytes actually read this time                        intr = Fsread.read (buffer,0, buffer.                        Length); if(r = =0)                        {                             Break; } fswrite.write (Buffer,0, R);//Write                    }                }}

C # file stream copy File