how can i do two things at oncce

[Younghunt]

Hi

I am tring to write a small ftp client in vb.net, i can get it do download file using wininet.dll and ftpgetfile to download the file, but as the files i want to download may be large i need some sort of progress indicator to show how much of the total is downloaded.

i have tried using the file size.maxvalue indicatiors, but this won't work cos when i call the ftpgetfile, the system is stuck until then entire file is downloaded. how can i make this so it has a progress bar or shows the user how much has come down.

any help would be much appreciated

cheers

YH

[hellswraith]

You need to do some multithreading. You need to put the download operation on a seperate thread. Here is an article on the MSDN library site that should give you more information than you need to do this:
http://msdn.microsoft.com/library/de...syncprocvb.asp

Have fun.

[Musician]

Well threading in .net is cool but good http/ftp dlls should provide events to allow for download progress checking.

[BryanJ]

You should fire the application.doevents method every now again so that the screen gets updated.

You could also use a timer, and place the doevents in a timer.

[hellswraith]

Originally posted by BryanJ
You should fire the application.doevents method every now again so that the screen gets updated.

You could also use a timer, and place the doevents in a timer.

You shouldn't have to do that in VB.Net, at least not for what is being asked.

For the problem at hand, having the download process and checking on a seperate thread is going to be ideal. You don't want something locking up the main form, and a seperate thread will do this. Have an object fire events to the main form telling the current status of the download. Then handle the UI implementation there.

[BryanJ]

You are right, it is messy and it will sure to be a problem later.

Creating another thread is the best solution.