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VB.NET实现应用程序自动更新2

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VB.NET实现应用程序自动更新2
2008/08/02 12:52

Protected Overrides ReadOnly Property CreateParams() As System.Windows.Forms.CreateParams '禁用系統關閉按鈕，屏蔽ALT+F4
Get
Const CS_NOCLOSE As Integer = &H200
Dim cp As CreateParams = MyBase.CreateParams
cp.ClassStyle = cp.ClassStyle Or CS_NOCLOSE
Return cp
End Get
End Property
'载入
Private Sub update_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' Dim a As String = CStr(Me.Handle.ToInt32)
' Dim b As Short = 0
' Dim flag As Object
Dim SwfPath As String = Application.StartupPath & "/images/login.swf"
' Call Myapi.Disabled(CShort(a), CShort(b)) '让关闭X不可用
Call Reset()
Call GetAddress()
' MsgBox(SwfPath)

AxWebBrowser1.Navigate(SwfPath)

For x As Integer = 0 To 10
Application.DoEvents()
Next
btnupdate_Click(New System.Object, New System.EventArgs) '執行更新

End Sub

'还原状态
Private Sub Reset()
PictureBox1.Image = Image.FromFile(Ready)
PictureBox2.Image = Image.FromFile(Ready)
PictureBox3.Image = Image.FromFile(Ready)
PictureBox4.Image = Image.FromFile(Ready)
PictureBox5.Image = Image.FromFile(Ready)
PictureBox6.Image = Image.FromFile(Ready)
PictureBox7.Image = Image.FromFile(Ready)
PictureBox8.Image = Image.FromFile(Ready)

End Sub

'让btn可用
Private Sub Resetbtn()
btnupdate.Enabled = True
btnclose.Enabled = True
End Sub

'检测文件夹是否存在,不存在则建立
Private Sub ChkExsitFolder(ByVal foldername As String)
If fso.FolderExists(foldername) = False Then
fso.CreateFolder(foldername)
End If
End Sub

'检测文件是否存在，返回boolean值
Private Function ChkExsitFile(ByVal filename As String) As Boolean
Return fso.FileExists(filename)
End Function

'获取文件版本信息获取成功返回版本值,不成功返回nothing
Private Function Getcurversion(ByVal filepath As String) As String
Try
Curversion = FileVersionInfo.GetVersionInfo(filepath).FileVersion.ToString
Return Curversion
Catch ex As Exception
Return Nothing
End Try
End Function

'获取配置文件中的地址地址最后必须加上"/"
Private Sub GetAddress()
Try
Address = Func.GetKeyVal(Inipath, "serverpath", "address")
SleepTime = Func.GetKeyVal(Inipath, "serverpath", "Time")
RunProgrom = Func.GetKeyVal(Inipath, "serverpath", "Run")
KillProgrom = Func.GetKeyVal(Inipath, "serverpath", "Kill")

Catch ex As Exception
lbl.Text = "獲取系統參數失败..."
Resetbtn()
Exit Sub
End Try
End Sub

'测试连接到服务器并下载升级文件
Private Sub Connectsvr()
PictureBox1.Image = Image.FromFile(down)
Try
If fso.FolderExists(Tempfolder) = False Then '如果不存在临时文件夹子，则先建立
fso.CreateFolder(Tempfolder)
End If
MyWebClient.DownloadFile(address & "update.XML", Tempfolder & "/update.xml")
Catch ex As Exception
lbl.Text = "连接服务器失败..."
PictureBox1.Image = Image.FromFile(Err)
Resetbtn()
Exit Sub
End Try
End Sub

'检查更新版本读取数据集如果数据集为空则失败
Private Sub Getnewversion()
PictureBox2.Image = Image.FromFile(down)
Try
UpdateDataSet.ReadXml(Tempfolder & "/update.xml")
' MsgBox(updateDataSet.Tables(0).Rows.Count)
If UpdateDataSet.Tables(0).Rows.Count <= 0 Or (UpdateDataSet Is Nothing) Then
lbl.Text = "检查可更新版本失败..."
Reset()
End If
Catch ex As Exception
lbl.Text = "检查可更新版本失败..."
PictureBox2.Image = Image.FromFile(Err)
Resetbtn()
Exit Sub
End Try
End Sub

'分析更新版本并获取所有要下载的字节数
Private Sub ChkUpdate()
PictureBox3.Image = Image.FromFile(down)
Alldownloadbyte = 0
ChkUpdateMethod()
If UpdateDataSet.Tables("file").Rows.Count = 0 Then
lbl.Text = "您目前的版本已经是最新版..."
Resetbtn()
System.Threading.Thread.Sleep(2000) '1.5秒后打開主程序
RunMainProgrom()
Exit Sub
Else
Call ChkAlldownloadbtye() '獲取字節數
End If
End Sub
Private Sub RunMainProgrom()
On Error Resume Next
Call DelTmpFiles()
System.Diagnostics.Process.Start(Application.StartupPath & "/" & RunProgrom)
' Me.Close()
' Runthread.Abort()
Application.Exit()
End Sub

'分析更新版本具体方法，采用了递归
Private Sub ChkUpdateMethod()
Dim i As Integer
Try
For i = 0 To UpdateDataSet.Tables(0).Rows.Count - 1
'分析存在性,如果不存在则是需要升级的,如果存在分析版本如果版本为空则分析最后修改时间
If ChkExsitFile(Application.StartupPath & UpdateDataSet.Tables("file").Rows(i)("target")) = True Then
'如果版本号相等则删除此行
If Func.cdbnull(UpdateDataSet.Tables("file").Rows(i)("version")) <> "" Then
If Getcurversion(Application.StartupPath & UpdateDataSet.Tables("file").Rows(i)("target")) = UpdateDataSet.Tables("file").Rows(i)("version") Then
UpdateDataSet.Tables("file").Rows.Item(i).Delete()
ChkUpdateMethod()
Exit Sub
'Else
' Alldownloadbyte += UpdateDataSet.Tables("file").Rows(i)("filelength")
End If
Else
'如果修改时间大于或者相等则删除此行
fl = fso.GetFile(Application.StartupPath & UpdateDataSet.Tables("file").Rows(i)("target"))
If fl.DateLastModified >= CType(UpdateDataSet.Tables("file").Rows(i)("lastmodifydate"), Date) Then
UpdateDataSet.Tables("file").Rows.Item(i).Delete()
ChkUpdateMethod()
Exit Sub
'Else
' Alldownloadbyte += UpdateDataSet.Tables("file").Rows(i)("filelength")
End If
End If
'Else
' Alldownloadbyte += UpdateDataSet.Tables("file").Rows(i)("filelength")
End If
Next
Catch ex As Exception
lbl.Text = "升级失败,无法分析更新版本..."
PictureBox3.Image = Image.FromFile(Err)
Resetbtn()
Exit Sub
End Try
End Sub
Private Sub ChkAlldownloadbtye()
Try
For i As Integer = 0 To UpdateDataSet.Tables("file").Rows.Count
Alldownloadbyte += UpdateDataSet.Tables("file").Rows(i)("filelength")
Next
Catch ex As Exception

End Try
End Sub

Private Sub Downfiles()
Connectsvr()
If btnupdate.Enabled = True Then
Exit Sub
End If
Getnewversion()
If btnupdate.Enabled = True Then
Exit Sub
End If
ChkUpdate()
If btnupdate.Enabled = True Then
Exit Sub
End If
Dim i As Integer
Dim srm As Stream = Nothing
Dim mbyte() As Byte
Dim allbyte As Long
Dim startbyte As Integer
Dim m As Integer
Dim fs As FileStream
Dim myre As HttpWebRequest = Nothing
Dim mwrite As HttpWebResponse
Dim wc As WebClient = New WebClient
'Dim myCredential As New NetworkCredential '("pengli@triopy", "fairy")
'wc.Credentials = myCredential
PictureBox4.Image = Image.FromFile(down)
Progressdownload.Position = 0 '总的进度
Progressdownload.Properties.Maximum = Alldownloadbyte
' MsgBox(Alldownloadbyte)
Try
For i = 0 To UpdateDataSet.Tables("file").Rows.Count - 1
GroupBox1.Text = "下载进度(" & (i + 1).ToString & "/" & UpdateDataSet.Tables("file").Rows.Count & ")"
ProgressCdownload.Position = 0 '设置当前进度为0
startbyte = 0 '开始下载的位置为0
ReDim mbyte(CLng(UpdateDataSet.Tables("file").Rows(i)("filelength"))) '本也可以直接获取文件大小，但是很占用资源，干脆写在配置文件内
' MsgBox(UpdateDataSet.Tables("file").Rows(i)("filelength"))
myre = CType(WebRequest.Create(UpdateDataSet.Tables("file").Rows(i)("downurl")), HttpWebRequest)
' MsgBox(UpdateDataSet.Tables("file").Rows(i)("downurl").ToString)
mwrite = CType(myre.GetResponse(), HttpWebResponse)
srm = wc.OpenRead(UpdateDataSet.Tables("file").Rows(i)("downurl"))
allbyte = mbyte.Length
' MsgBox(allbyte)
ProgressCdownload.Properties.Maximum = allbyte
ProgressCdownload.Position = 0
Do While UpdateDataSet.Tables("file").Rows(i)("filelength") > 0
m = srm.Read(mbyte, startbyte, allbyte)
If m = 0 Then Exit Do
startbyte += m
allbyte -= m
ProgressCdownload.Position += m
Progressdownload.Position += m
Loop

fs = New FileStream(Tempfolder & "/" & UpdateDataSet.Tables("file").Rows(i)("filename"), FileMode.Create)
'Try
fs.Write(mbyte, 0, mbyte.Length)
'Catch ex As Exception
' MsgBox(ex.ToString)
' Resetbtn()
'End Try

fs.Flush()
fs.Close()
myre.Abort() '这里必须释放资源,否则下载多个文件出现连接超时错误
srm.Close()
Thread.Sleep(SleepTime) '这里每下一个文件让线程等待2秒,太快可能服务器没有响应
Next
Progressdownload.Position = Alldownloadbyte '防止人为写错字节数不到100的现象
Catch ex As Exception
lbl.Text = "下载更新文件失败..."
PictureBox4.Image = Image.FromFile(Err)
Resetbtn()
myre.Abort()
srm.Close()

Exit Sub
End Try
Closeexe()
UpdateFile()
DelTmpFiles()
If btnupdate.Enabled = True Then
Exit Sub
End If
Startexe()
End Sub

'关闭应用程序
Private Sub Closeexe()
PictureBox5.Image = Image.FromFile(down)
Func.killprogress(KillProgrom) '这里是我引用的一个类，用来杀进程的
End Sub

'更新要升级的文件
Private Sub UpdateFile()
PictureBox6.Image = Image.FromFile(down)
Try
Dim i As Integer
' Dim flcopy As IO.File
For i = 0 To UpdateDataSet.Tables("file").Rows.Count - 1
IO.File.Copy(Tempfolder & "/" & UpdateDataSet.Tables("file").Rows(i)("filename"), Application.StartupPath & UpdateDataSet.Tables("file").Rows(i)("target"), True)
Next
Catch ex As Exception
lbl.Text = "升级到新版本失败,可能应用程序未关闭..."
PictureBox6.Image = Image.FromFile(Err)
Resetbtn()
Exit Sub
End Try
End Sub

'删除文件
Private Sub DelTmpFiles()
PictureBox7.Image = Image.FromFile(down)
Try
fso.DeleteFolder(Tempfolder, True)
Catch ex As Exception
PictureBox7.Image = Image.FromFile(Err)
Exit Sub
End Try
End Sub

'启动应用程序
Private Sub Startexe()
PictureBox8.Image = Image.FromFile(down)
Try
'Call DelTmpFiles()
System.Diagnostics.Process.Start(Application.StartupPath & "/" & RunProgrom)
' Me.Close()
Application.Exit()
Catch ex As Exception
lbl.Text = "更新成功,但未能启动应用程序,请手动启动..."
PictureBox8.Image = Image.FromFile(Err)
Finally
btnclose.Enabled = True
End Try
End Sub

'升级
Private Sub btnupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdate.Click
' updateDataSet.ReadXml(Application.StartupPath & "/update.xml")
Reset()
btnupdate.Enabled = False
' btnclose.Enabled = False
GroupBox1.Text = "下载进度"
lbl.Text = ""
UpdateDataSet.Clear()
Runthread = New Thread(AddressOf Downfiles) '不知道为什么，用了JOIN后将会出现卡屏，用线程池/完成事件/轮循都不行，我只有把其他事件放在这个线程里了。郁闷
Runthread.Start()
'runthread.Join()
End Sub

Private Sub btnclose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnclose.Click
On Error Resume Next
Me.Hide()
Call DelTmpFiles()
System.Diagnostics.Process.Start(Application.StartupPath & "/" & RunProgrom)
' Me.Close()
' Runthread.Abort()
Application.Exit()
End Sub

Private Sub LinkLabel1_LinkClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs)
System.Diagnostics.Process.Start("IExplore.exe", "http://www.triopy.com/tmics/")
End Sub
End Class

'類文件

Public Class func

Private Myapi As New Fairy4_Api.My_Api

Public Function cdbnull(ByVal str As String) As String
Return str.Trim
End Function
Public Sub killprogress(ByVal strName As String)
Dim pProcess() As Process
pProcess = Process.GetProcesses()
Dim i As Integer
For i = 0 To pProcess.Length() - 1
If (pProcess(i).ProcessName.ToUpper = strName) Then
pProcess(i).Kill() '關閉進程
End If
Next

End Sub
Public Function GetKeyVal(ByVal path As String, ByVal Section As String, ByVal AppName As String) As String
GetKeyVal = Myapi.GetINI(Section, AppName, "", path)

End Function

End Class

’對原程序做了部分優化，使用比較穩定，但在調式時，易發生空間正在使用異常。這個可能是

DevExpress控件的原因。

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