private void CheckUpdate()
{
// i want to make it read a repository , for example :
www.*****.***/tags/1.0.0.0/
www.*****.***/tags/1.0.0.1/
www.*****.***/tags/1.0.0.2/
www.*****.***/tags/1.0.0.3/
 
and save the last one in my case /1.0.0.3/
and save it as  www.*****.***/tags/1.0.0.3/myapp.exe
 
}