C # file splitting and merging Part 2

This is the merging part.ArticleSplit files are merged to create a new project. Compared with the previous project, a combox control is missing. Because we want to merge files, we do not need to select the file size, the design diagram is as follows:

Similarly, reference system. Io and add the following to the browser button:Code:

 

 Browse 

   Private     Void  Button#click (  Object  Sender, eventargs E)
{
Openfiledialog1.title  =    "  Select the first file to be merged  "  ;
System. Windows. Forms. dialogresult drtemp  =  Openfiledialog1.showdialog ();
  If  (Drtemp  =  Dialogresult. OK  &&  Openfiledialog1.filename  ! =     "" )
{
Textbox1.text  =  Openfiledialog1.filename;
}
  String  [] Path  =  Openfiledialog1.filename. Split (  @"  \  "  . Tochararray ());
  String  Stemp  =    ""  ;
  Int  I  =     0  ;
  For  (I  =     0  ; I  <  Path. Length  -    1  ; I  ++  )
{
Stemp  =  Stemp  +  Path [I]  +     @"  \  "  ;
}
Button1.enabled  =     True ;
Sdirectoryname  =  Stemp;
  //  Obtain the directory where the file is located  
  
} 

 

Add the following code to button2:

 

 Merge 

   Private     Void Button2_click (  Object  Sender, eventargs E)
{
  String  [] Arrfilenames  =  Directory. getfiles (sdirectoryname );
  //  Obtain all the small files in the directory where the split small files are stored.  
    Int  Isumfile  =  Arrfilenames. length;
Progressbar1.maximum =  Isumfile;
Filestream addstream  =     New  Filestream (textbox2.text, filemode. openorcreate );
  //  Create and initialize the filestream file stream with the merged file name and Opening Method  
  Binarywriter addwriter  =     New  Binarywriter (addstream );
  // Binarywriter writer is initialized using a filestream file stream, which is used to merge split files.  
    /*  Merge small files cyclically and generate merged files  */  
  For  (  Int  I  =     0  ; I  <  Isumfile; I ++  )
{
Filestream tempstream  =     New  Filestream (arrfilenames [I], filemode. Open );
  //  Initialize the filestream file stream with the file name and open mode corresponding to the small file, which is used for reading and splitting.  
  Binaryreader tempreader  =     New  Binaryreader (tempstream );
 //  Use filestream file stream to initialize the binaryreader file reader. It also reads the split file.  
  Addwriter. Write (tempreader. readbytes ((  Int  ) Tempstream. Length ));
  //  Read the data in the split file and generate the merged File  
  Tempreader. Close ();
  //  Disable binaryreader  
  Tempstream. Close ();
 //  Disable filestream file streams  
  Progressbar1.value  =  I  +     1  ;
  //  Display merging process  
  }
Addwriter. Close ();
  //  Disable the binarywriter file writer 
  Addstream. Close ();
  //  Disable filestream file streams  
  MessageBox. Show (  "  Merged successfully!  "  );
Progressbar1.value  =     0  ;
} 

 

Compile and run the program. Find the first file, select 0001.rar, and merge it.

You Can See my.rar in the output file.