[RESOLVED] Controling Threads

Code:

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Imports System.Threading
Imports System.IO
Public Class Form1
    Public iPath As String
    Public cnt As Integer
    Shared locker As Object = New Object()


    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Startdownload.Click
        Dim sr As New StreamReader(TextBox1.Text)
        Dim strLine As String
        strLine = sr.ReadLine()
            Do Until strLine Is Nothing
                cnt = cnt + 1
                iPath = strLine
                strLine = sr.ReadLine()
                StartThread()

            Loop
        sr.Close()
    End Sub


    Private Sub DownloadFile()
        Dim url As String
        Dim localFileName As String
   
        On Error Resume Next

            My.Computer.Network.DownloadFile _
                (url, _
                localFileName)
        Next i

    End Sub


    Private Sub StartThread()
        Dim nthread As Thread
        nthread = New Thread(AddressOf DownloadFile)
        nthread.Start()

    End Sub
End Class

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I am downloading 500 file from internet but it freeze my form utile it's completed so i have tried Thread but it starts all the Thread at once and i don't get all the files.... how can i control the Thread execution? i want that until one file is not completed dont go for other file or loop. i have tried SyncLock but really don't know how to use SyncLock plz help

In situations like this where I need to let the thread finish before starting another I typically will have an event that is fired by the thread upon completion and I will then execute the next thread after that event fires and so on.

You don't really need more than one thread. If you intend to only download one file at a time then just start one thread and then download them all in that one thread. Can you let us know where and how you're getting the list of files to download?

Quote:

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If you intend to only download one file at a time then just start one thread and then download them all in that one thread.

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can you show me how can i do this?

Quote:

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Can you let us know where and how you're getting the list of files to download?

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URL links are in on text file i just read lines 1 by 1 and download to local HDD

vb.net Code:

For Each remotePath As String In IO.File.ReadAllLines("file path here")
    'Download from remotePath here.
Next remotePath

Just put that in the DoWork event handler of a BackgroundWorker. There's a link to BGW example code in my signature.

thanx jmcilhinney :)