A Software Update Program (using WinRAR compressed package)

 

Using System;
Using System. Collections. Generic;
Using System. componentmodel;
Using System. Data;
Using System. drawing;
Using System. text;
Using System. Windows. forms;
Using System. IO;
Using System. net;
Using System. diagnostics;

Namespace Update
{
Public Partial Class Form1: Form
{
Private WebClient update =   New WebClient ();

Public Form1 ()
{
Initializecomponent ();
}

Private   Void Form1_load ( Object Sender, eventargs E)
{
String URL =   @" Http://files.cnblogs.com/mossan/Zhongwen.rar " ;
Int N = URL. lastindexof ( ' / ' );
String Filename = URL. substring (n +   1 , URL. Length - N -   1 );

If ( ! (Directory. exists (application. startuppath +   " \ Update " )))
{
Directory. createdirectory (application. startuppath+ "\ Update");
}

Try   {Update. downloadfile (URL, application. startuppath+ "\ Update \\" +Filename );}
Catch (Webexception ex) {MessageBox. Show (ex. Message,"Error");}

Try
{
Process unwinrar =   New Process ();
Unwinrar. startinfo. filename =   " Winrar.exe " ;
Unwinrar. startinfo. Arguments =   " E-O ++ \ "" + Application. startuppath + " \ Update \\ " + Filename + " \ ""   +   " \ "" + Application. startuppath + " \ Update " + " \ "" ;
Unwinrar. Start ();
MessageBox. Show ( " Decompressed! " );
File. Copy (application. startuppath +   " \ Update \\ "   +   " Zhongwen.exe " , Application. startuppath +   " \ Zhongwen.exe " , True );

Process prozhongwen =   New Process ();
Prozhongwen. startinfo. filename = Application. startuppath +   " \ Zhongwen.exe " ;
Prozhongwen. Start ();
}
Catch (Exception ex) {MessageBox. Show (ex. Message );}
This . Close ();
}
}
}