[VB.NET/PHP] No source available | โปรเจค Auto Update ครับ แต่มันไม่เริ่มโหลดไฟล์ข้อมูล

Imports System.Threading
Imports System.ComponentModel
Imports System.IO
Imports System.Net
Imports System.Data

Public Class Form1
    Public Shared DownloadStats As Boolean = True
    Public Shared TotalFile As Integer = 0
    Public Shared TotalDownload As Integer = 0
    Public Shared ProcessFileMD As Integer = 0
    Public Shared ProcessFileAllMD As Integer = 0
    Public Shared PercentDownload As Integer = 0
    Public Shared DownloadFileInfo As String()
    Public Shared DownloadFileName As String = ""
    Public Shared DownloadFileMB As Integer = 0
    Public Shared DownloadFileTotalMB As Integer = 0
    Public Shared Path As String = ""
    Public Shared DownloadUrl As String = "http://127.0.0.1/autoupdate/download.php"
    Public Shared VersionUrl As String = "http://127.0.0.1/autoupdate/version.txt"

    Dim whereToSave As String 'Where the program save the file
    Dim whereToDownload As String 'Where the program save the file

    Delegate Sub ChangeTextsSafe(ByVal length As Long, ByVal position As Integer, ByVal percent As Integer, ByVal speed As Double)
    Delegate Sub DownloadCompleteSafe(ByVal cancelled As Boolean)

    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        TotalFile = 1
        TotalDownload = 0
        DownloadFileName = "กำลังรับค่าไฟล์อัพเดรต"

        Me.Button2.Enabled = False
        Me.Button2.Text = "Updating..."

        Me.whereToDownload = DownloadUrl
        Me.whereToSave = My.Application.Info.DirectoryPath & "\downloaded.dll"
        Me.BackgroundWorker1.RunWorkerAsync()

        Do
            If (DownloadStats = True And Me.BackgroundWorker1.IsBusy = False) Then
                Dim ListDownload() As String = File.ReadAllLines(My.Application.Info.DirectoryPath & "\downloaded.dll")
                TotalFile = ListDownload.Length
                TotalDownload = 0
                Thread.Sleep(100)
                For Line As Integer = 0 To (ListDownload.Length - 1)
                    Dim FileInfo_Downloads() As String = ListDownload(Line).Split(",")
                    If (Not System.IO.Directory.Exists(FileInfo_Downloads(1))) Then
                        Dim FolderCreating() As String = FileInfo_Downloads(1).Split("\")
                        Dim FolderWillCreate As String = ""
                        For FolderCount As Integer = 0 To (FolderCreating.Length - 2)
                            FolderWillCreate = FolderWillCreate + "\" + FolderCreating(FolderCount)
                        Next
                        System.IO.Directory.CreateDirectory(My.Application.Info.DirectoryPath & "\bin\" & FolderWillCreate)
                    End If
                    Do
                        If (DownloadStats = True And Me.BackgroundWorker1.IsBusy = False) Then
                            Thread.Sleep(10)
                            DownloadFileName = DownloadFileName = FileInfo_Downloads(1).Split("\")(FileInfo_Downloads.Length - 1)
                            Me.whereToDownload = FileInfo_Downloads(0)
                            Me.whereToSave = My.Application.Info.DirectoryPath & "\bin\" & FileInfo_Downloads(1)
                            Me.BackgroundWorker1.RunWorkerAsync()
                            Exit Do
                        End If
                    Loop
                Next
            End If
            Exit Do
        Loop
    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Minecraft.Start("phoomin2012")
    End Sub

    Public Sub DownloadComplete(ByVal cancelled As Boolean)
        TotalDownload = TotalDownload + 1
        'Me.ProgressBar1.Maximum = TotalFile
        Me.ProgressBar1.Value = (TotalDownload / TotalFile * 100)
        'Me.ProgressBar2.Maximum = DownloadFileTotalMB
        'Me.ProgressBar2.Value = DownloadFileMB
        Me.ProgressBar2.Value = PercentDownload
        Me.Label1.Text = "ทั้งหมด " & TotalDownload.ToString & "/" & TotalFile.ToString & " (100%)"
        Me.Label2.Text = "ไฟล์ขนาด " & Math.Round((DownloadFileMB / 1024 / 1024), 2) & " MB / " & Math.Round((DownloadFileTotalMB / 1024 / 1024), 2) & " MB (100%) ความเร็วดาวห์โหลด : หยุดการดาวห์โหลด"
        Form1.DownloadStats = True
    End Sub

    Public Sub ChangeTexts(ByVal length As Long, ByVal position As Integer, ByVal percent As Integer, ByVal speed As Double)
        Dim speeddownload As String = ""

        If speed = -1 Then
            speeddownload = "กำลังคำนวณ..."
        Else
            speeddownload = "" & Math.Round((speed / 1024), 2) & " KB/s"
        End If

        Me.Label3.Text = "ชื่อไฟล์ : " & DownloadFileName
        Me.Label1.Text = "ทั้งหมด " & TotalDownload.ToString & "/" & TotalFile.ToString & " ( " & (TotalDownload / TotalFile * 100) & "%)"
        Me.Label2.Text = "ไฟล์ขนาด " & Math.Round((position / 1024 / 1024), 2) & " MB / " & Math.Round((length / 1024 / 1024), 2) & " MB (" & percent & "%)" & _
            " ความเร็วดาวห์โหลด : " & speeddownload & " | " & speed

        DownloadFileMB = position
        DownloadFileTotalMB = length
        PercentDownload = percent
        'Me.Label5.Text = "Downloading: " & Me.txtFileName.Text

        Me.ProgressBar1.Value = (TotalDownload / TotalFile * 100)
        Me.ProgressBar2.Value = percent
    End Sub

    Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork

        'Creating the request and getting the response
        Dim theResponse As HttpWebResponse
        Dim theRequest As HttpWebRequest
        Try 'Checks if the file exist

            theRequest = WebRequest.Create(Me.whereToDownload)
            theResponse = theRequest.GetResponse
        Catch ex As Exception

            MessageBox.Show("An error occurred while downloading file. Possibe causes:" & ControlChars.CrLf & _
                            "1) File doesn't exist" & ControlChars.CrLf & _
                            "2) Remote server error", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error)
            MsgBox(ex.Message)

            Dim cancelDelegate As New DownloadCompleteSafe(AddressOf DownloadComplete)

            Me.Invoke(cancelDelegate, True)

            Exit Sub
        End Try
        Dim length As Long = theResponse.ContentLength 'Size of the response (in bytes)

        Dim safedelegate As New ChangeTextsSafe(AddressOf ChangeTexts)
        Me.Invoke(safedelegate, length, 0, 0, 0) 'Invoke the TreadsafeDelegate

        Dim writeStream As New IO.FileStream(Me.whereToSave, IO.FileMode.Create)

        'Replacement for Stream.Position (webResponse stream doesn't support seek)
        Dim nRead As Integer

        'To calculate the download speed
        Dim speedtimer As New Stopwatch
        Dim currentspeed As Double = -1
        Dim readings As Integer = 0

        Do

            If BackgroundWorker1.CancellationPending Then 'If user abort download
                Exit Do
            End If

            speedtimer.Start()

            Dim readBytes(4095) As Byte
            Dim bytesread As Integer = theResponse.GetResponseStream.Read(readBytes, 0, 4096)

            nRead += bytesread
            Dim percent As Short
            Do
                length = theResponse.ContentLength
                If Not length = -1 Then
                    percent = (nRead * 100) / length
                    Exit Do
                End If
            Loop


            Me.Invoke(safedelegate, length, nRead, percent, currentspeed)

            If bytesread = 0 Then Exit Do

            writeStream.Write(readBytes, 0, bytesread)

            speedtimer.Stop()

            readings += 1
            If readings >= 5 Then 'For increase precision, the speed it's calculated only every five cicles
                currentspeed = 20480 / (speedtimer.ElapsedMilliseconds / 1000)
                speedtimer.Reset()
                readings = 0
            End If
        Loop

        'Close the streams
        theResponse.GetResponseStream.Close()
        writeStream.Close()

        If Me.BackgroundWorker1.CancellationPending Then

            IO.File.Delete(Me.whereToSave)

            Dim cancelDelegate As New DownloadCompleteSafe(AddressOf DownloadComplete)

            Me.Invoke(cancelDelegate, True)

            Exit Sub

        End If

        Dim completeDelegate As New DownloadCompleteSafe(AddressOf DownloadComplete)

        Me.Invoke(completeDelegate, False)

    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        TotalFile = 1
        DownloadFileName = "ตรวจสอบเวอร์ชั่น"
        Me.whereToDownload = VersionUrl
        Me.whereToSave = My.Application.Info.DirectoryPath & "\versions.dll"
        Me.BackgroundWorker1.RunWorkerAsync()
        Do
            If (DownloadStats = True) Then
                Dim ListVersion() As String = File.ReadAllLines(My.Application.Info.DirectoryPath & "\versions.ver")
                If Not My.Settings.Version = ListVersion(0) Then
                    MsgBox("มีการอัพเดรตใหม่!!" & ControlChars.CrLf & _
                           "เวอร์ชั่นปัจจุบัน : " & My.Settings.Version & ControlChars.CrLf & _
                           "เวอร์ชั่นใหม่ : " & ListVersion(0).ToString)
                    Me.Button2.Enabled = True
                End If
                Exit Do
            End If
        Loop
    End Sub
End Class