[RESOLVED] VB Downloader not working

What I want the program to do/What is happening.


How come this doesn't work??? I want the user to select one of the following items in a listbox and the direct link will appear in the DwlLocation textbox and then afterthat the user presses download and it asks where to save the file then the user inputs a file name and then if begins downloading with the progress bar in sync with actual progress. This worked for me individually then I sent it to my friend and it didn't work it would make a file with 0KB and its damaged. Then after I tryed and it didn't work for me as well! I really appreciate you for reading this!

Code:

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    Private Sub BtnDownload_Click(sender As System.Object, e As System.EventArgs) Handles BtnDownload.Click
        If Lstavailable.SelectedItem = Nothing Then
            MsgBox("Please choose a picture to download", MsgBoxStyle.Critical, "Error Selection")
        Else
            SaveFilePic.Filter = ".png|*.png"
            SaveFilePic.Title = "Choose where to download it to!"
            SaveFilePic.ShowDialog()
            If SaveFilePic.FileName = Nothing Then
                MsgBox("Please name your saved file or unable to complete request.", MsgBoxStyle.Critical)
                TxtDwlSrc.Clear()
            Else
                TxtDwlLocation.Text = SaveFilePic.FileName
                WebClient.DownloadFileAsync(New Uri(TxtDwlSrc.Text), TxtDwlLocation.Text)
                Lstavailable.Enabled = False
            End If
        End If
    End Sub

    Private Sub WebClient1_DownloadFileCompleted(sender As Object, e As System.ComponentModel.AsyncCompletedEventArgs) Handles WebClient.DownloadFileCompleted
        Dim selectPic As String
        selectPic = LstMaps.SelectedItem
        MsgBox(selectPic & " finished downloading!", MsgBoxStyle.Information, "Pictures")
    End Sub

    Private Sub WebClient1_DownloadProgressChanged(sender As Object, e As System.Net.DownloadProgressChangedEventArgs) Handles WebClient.DownloadProgressChanged
        DwldProgress.Value = e.ProgressPercentage
        Text = "download pictures" & " - " & e.ProgressPercentage.ToString + "%" & " Downloaded."

    End Sub

    Private Sub Lstavailable_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles Lstavailable.SelectedIndexChanged
        If Lstavailable.SelectedItem = "Terminal" Then
         

            TxtDwlSrc.Text = "the direct download link here" 'Keep in mind where I put "the direct download link here" its the direct link to the file.
        ElseIf Lstavailable.SelectedItem = "Alle" Then
            TxtDwlSrc.Text = "the direct download link here"
        ElseIf Lstavailable.SelectedItem = "Mary" Then
            MsgBox("the direct download link here")
            TxtDwlSrc.Clear()
        End If
    End Sub
End Class

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Changed event "WebClient1" to "WebClient" = Still Not Resolved.

Problem: Once I press download it says finished downloading and blank damaged file appears.

WebClient.DownloadFileAsync(...), that method isn't shared, where do you create the WebClient object? In your events it looks like it's named WebClient1.

Oo, sorry about that.. I changed it and same result :(

You changed it to what? Where is it declared and created?

Yes, the name of the webclient is webclient and declared in the code as well. could you try to recreate the code to work with any file? and link?

I don't know about any file but yes I have no problems downloading files. Do you use absolute URLs including http:// ?

I host the files on Google Crive. I just download the file.. when its done downloading in Google Chrome there's a option to copy link address and that's what I fill into the

TxtDwlSrc.Text = "the direct download link here"

This did work at one point but all the sudden it doesn't. It's a very weird process and I'm reaching out to people on here that may be aware of the issue.

Heres some of the link I am using although it is not the full link that is 1/3 of it. So I do use absolute or no? If so, how can I make it a absolute URL. Or a quick fix.

"https://doc-0g-1c-docs.googleusercontent.com/docs/securesc..."

Yes that URL uses an absolute path. Can you just paste the url into a webbrowser and see the image?

yea i can see the image :) . Is there a more expeditious way to write this task or any other way. Because this strangely doesn't work all the sudden.

Should I rewrite the application maybe theirs a hidden error. Okay I will do that and write back here.

Okay, I rewrote the entire program and used a Direct permalink instead. this seemed to solve the issue. For those who have trouble with this.

Use a direct Permalink to the file and it should be a absolute path.

Quote:

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Originally Posted by Reapism

and it should be a absolute path.

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FYI: You can use a relative path as well if you've set the BaseAddress property of the WebClient.