[RESOLVED] Creating Multithread

This is my problem to solve:

I need to download from internet various files, about 2000 per day.
I've done an app to download all this files, but it takes a lot of time to get all files because the download is done one by one, in a loop (all file names are loaded to a grid). So, I must use multi-threading.

(My app should use all band-width, but each file doesn't have more then 100kb, average 60kb).

My doubt now is: should I use a ActiveX EXE or ActiveX DLL?
After that, on project properties, which option should I choose from "Threading Model"?

Do I have to code more lines besides the download function to have multithreading?

Thank you.

ActiveX DLL doesn't do multi threading ActiveX EXE does...

Apartment threading is what VB uses

Just instantiating the ActiveX EXE gives it a new thread.

In my case, what I will do in ActiveX is a function to download 1 file.
My app will have a loop that will call the ActiveX sending the filename (as a parameter) to download the file.

Code:

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Private Sub Command1_Click()
Dim ActX As New DownloaderActX.download
Dim i As Integer
   
For i = 1 To Me.MSHFlexGrid1.rows - 1      'All filenames in WWW are in the MSHFlexGrid
    ActX Me.MSHFlexGrid1.TextMatrix(i, 1)  'send the filename to ActX EXE
Next i

End Sub

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Will this be enough?

Thank you.

No, You would need to instantiate a new ActiveX exe for each download inside the loop. Something like this

Code:

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Dim ActX() as DownloaderActX.download

Redim Actx(Me.MSHFlexGrid1.rows - 1)

For i = 1 To Me.MSHFlexGrid1.rows - 1      'All filenames in WWW are in the MSHFlexGrid
    Set ActX(i) = New DownloaderActX.download
    ActX(i) Me.MSHFlexGrid1.TextMatrix(i, 1)  'send the filename to
Next i

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This would start as many downloads as you had rows. I would not recommend running that many though it is just an example.

Thank you. I'll try you tips.

Don't forget to destroy each instance after it is done downloading

Code:

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Set ActX(i) = Nothing

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