[niks_noty12]

Hello m Nikunj,

how to make a auto updater in vb.net

i need help

m using 2 files like

updater.exe
project_filename.exe


so how to make

please help...

[modi123_1]

A cursory codeplex search yielded this:
https://autoupdaterd...t.codeplex.com/

What else have you looked into?

[niks_noty12]

i have code vb.net

this is the code

Private Sub CheckForUpdates_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim cmdLineParams As String() = GetCommandLineArgs()
        If cmdLineParams.Length = 7 Then
            appurl = cmdLineParams(1) & cmdLineParams(3)
            apppath = cmdLineParams(2)
            appname = cmdLineParams(3)
            appversion = cmdLineParams(4)
            versioncheckurl = cmdLineParams(5)
            uri = New Uri(versioncheckurl)
            AddHandler webclient.DownloadFileCompleted, AddressOf webclient_dlcomplete
            AddHandler webclient.DownloadProgressChanged, AddressOf webclient_dlprogresschanged
        Else
            MessageBox.Show("Incorrect Parameter Count", "Parameter error")
            Me.Close()
        End If
    End Sub

in this code no errors but if run this program show me messagebox

MessageBox.Show("Incorrect Parameter Count", "Parameter error")

[Sheepings]

If so, that's because your condition in your if statement is not met.

If cmdLineParams.Length = 7 Then 

By equaling it to 7 means that the length of the cldLineParams need to be 7 in order for the if statement to remain true. If its not = to 7, you will run into the else condition. Use condition operators. >= 7 so your statement is not required to equal a specific integer. Also this might be helpful? Link - Self Updating Application

[zarlo5899]

Code To Look For A Up Date

            Dim request As System.Net.HttpWebRequest =   System.Net.HttpWebRequest.Create("https://dl.dropboxusercontent.com/u/153282115/updateserver/info/versionlookup/newestve rsion.version")
            Dim response As System.Net.HttpWebResponse = request.GetResponse()
            Dim sr As System.IO.StreamReader = New System.IO.StreamReader(response.GetResponseStream())
            Dim currentversion As String = My.Settings.currentversion
            Dim newestversion As String = sr.ReadToEnd()

            If newestversion.Contains(currentversion) Then

                Run()

            Else
                update()

            End If

Code To Downlode

    Private WithEvents httpclient As WebClient
    Dim url As String = "https://dl.dropboxusercontent.com/u/153282115/updateserver/dl/core"
    Dim BasePath As String = My.Computer.FileSystem.SpecialDirectories.MyDocuments
    Dim savepath As String = BasePath & "\hub\"
    Dim filenames As String = savepath & "list.txt"
    Private Sub download()

        Dim sr As New IO.StreamReader(filenames)
        Dim line As String = sr.ReadLine()

        Dim req As Net.WebRequest
        Dim resp As IO.Stream
        Dim out As IO.BinaryWriter

        Do While line IsNot Nothing
            req = Net.HttpWebRequest.Create(url & line)
            resp = req.GetResponse().GetResponseStream()
            Me.Label1.Text = "downloding:" & line
            out = New IO.BinaryWriter(New IO.FileStream(savepath & line, IO.FileMode.OpenOrCreate))

            Dim buf(4096) As Byte
            Dim k As Int32 = resp.Read(buf, 0, 4096)

            Do While k > 0
                out.Write(buf, 0, k)
                k = resp.Read(buf, 0, 4096)
            Loop

            resp.Close()
            out.Close()

            line = sr.ReadLine()
        Loop
        Run()
    End Sub

[Sheepings]

You should specify the file size of your actual updated file and replace the 0 with the file size value instead. If it where me, I'd make my life easy and use the WebClient Download event as my friend. And ditch this:

          Do While k > 0
	            out.Write(buf, 0, k)
	            k = resp.Read(buf, 0, 4096)
	        Loop

You should use the download event handler in the webclient to download the file for you. And use the Download progress changed event to see when you've downloaded the full file.

Dim MainFileSize As Integer
    Dim MainFileSizeNeeded As Integer
    Private Sub downloadFile1_DownloadProgressChanged(ByVal sender As Object, ByVal e As System.Net.DownloadProgressChangedEventArgs) Handles downloadFile1.DownloadProgressChanged
        Try           
            If e.BytesReceived = e.TotalBytesToReceive Then
                MainFileSize = CInt(e.BytesReceived)
                MainFileSizeNeeded = CInt(e.TotalBytesToReceive)
                'This gives you the current file size and how much its downloaded so far. 
                'If e.BytesReceived = e.TotalBytesToReceive Then You have the file and its
                'Downloaded fully and successfully. Then you can begin replacing the other 
                'old files with these new ones. I've used Cint, to convert from long to integer. 
                'From this point, you can begin your update. Ie. Copying the new file to the 
                'installation folder. You will need admin rights for your app to do that for Win XP or after.
            End If
        Catch ex As Exception
        End Try
    End Sub

To run it:

Dim RunDownload As New Threading.Thread(AddressOf Download) 'You will need to edit this to your liking.
        RunDownload.Start()

You also need to add the event parameters and handler back to your Download() Sub. Use the classes and handlers that are available to you, rather than writing your own logic for what is not needed in this case. Hope it helps.

This post has been edited by Sheepings: 19 July 2014 - 07:33 AM