Downloader

[pvbangera]

Hi all,

Need some help from you ppl. I want to develope a downloader program, where I can queue number of files to be downloaded from the web. I have got a following function, which I use to download individual file from the web:

Public Function DownloadFile(ByVal URL As String, ByVal LocalFileName As String) As Boolean
        Dim myClient As New System.Net.WebClient
        Dim S As System.IO.FileStream
        Dim myBuffer As Byte()
        Try
            myBuffer = myClient.DownloadData(URL)
            S = New IO.FileStream(LocalFileName, IO.FileMode.OpenOrCreate)
            S.Write(myBuffer, 0, myBuffer.Length)
            S.Flush()
        Catch
 
        Finally
            If Not S Is Nothing Then S.Close()
            myClient.Dispose()
 
        End Try
        If Not myBuffer Is Nothing Then Return True
    End Function

This function is working fine, but the problem with using this function for multiple downloads are:

1. I cannot terminate the downloading process inbetween.
2. Cant show a progress bar while downloading.
3. There are various URLs which have asp or php path, wherein giving a destination path is troublesome.

Pls pass on your suggestions and ideas.

Cheers n Regards

[sixfeetsix]

1. I cannot terminate the downloading process inbetween.

Sure you can, start the download function in a separate thread.

[pvbangera]

Can you give me a sample code please. Never done threading!!

[sixfeetsix]

Here's a basic way to do it from MSDN.
http://msdn.microsoft.com/library/de...classtopic.asp

Here is another example :
http://www.codenotes.com/articles/ar...articleID=1915

[pvbangera]

Thats cool...will go thru it. What abt other queries? You have any better solution to dload multiple files?

[Raziiq]

Threading is the solution to your 2nd problem as well however i am not sure about the 3rd one.
I have made a Download Manager through Threading and it is very easy using Threads.Also u can use the Threads for showing the Progress bar and terminating the Download in Between.

Please tell me the Solution of your 3rd question if u find it anywhere.

[pvbangera]

How would u increament the progress bar?

One more question? I am displaying the list of downloads on the flexigrid. How to insert progress bar in the flexi grid for each download?

thanx in advance