I have a label1 with the text "1.0.0.0". I want the form on start up to check for an update using dropbox by checking the dropbox link's version and comparing it with the app's current version but I am having some issues running it. This is my code so far:
Dim Web As New Net.WebClient
Dim version As Integer = Web.DownloadString("https://dl.dropboxusercontent.com/s/ny7brjs7zx1mt89/V.txt")
If version > CInt(Label6.Text) Then 'Example.: new version: 1.1.0.0, current version: 1.0.0.0 -> downloading update
Try
Dim path As String = "https://www.dropbox.com/s/ny7brjs7zx1mt89/V.txt?dl=1" 'The .rar archive
My.Computer.Network.DownloadFile(path, Application.StartupPath & "/[Update" & version & "]" & "Update.rar")
MsgBox("An update has been downloaded", MsgBoxStyle.OkOnly, "Update")
Catch ex As Exception
MsgBox("An error has occurred") 'Error message. Can also be msgBox("An error has occurred").
End Try
ElseIf System.IO.File.Exists("[Update1100]Update.rar") Then
MsgBox("You've already downloaded the update!")
MsgBox("Just search for:" & vbNewLine & "[Update1100]Update .rar")
ElseIf version = CInt(Label6.Text) Then
MsgBox("You already have the latest version!")
Else
End If
we are generating a mass of documents very dynamically. Therefore we concatenate source code and build a dll at runtime. This is running since windows XP.
Now we are in tests of windows 10 and it fails compiling this dll with the error "BC31019: Unable to write to output file 'C:\Users[name]AppData\Local\Temp\xyz.dll': The specified image file did not contain a resource section"
For testing purposes we remove all generated source code and replace it by a rudimental class with only one function (throwing an exception with specified text) and no referenced assemblies.
This is also running on all machines except windows 10. Same error.
Can anybody guess why?
This is the rudimental method
Public Sub Compile()
Dim lSourceCode = "Namespace DynamicOutput" & vbCrLf &
" Public Class Template" & vbCrLf &
" Sub New()" & vbCrLf &
" End Sub" & vbCrLf &
" Public Sub Generate(ByVal spoolJob As Object, ByVal print As Object)" & vbCrLf &
" Throw New System.Exception(""Generate reached"")" & vbCrLf &
" End Sub" & vbCrLf &
"" & vbCrLf &
" End Class" & vbCrLf &
"End Namespace"
Dim lParams As CodeDom.Compiler.CompilerParameters = New CodeDom.Compiler.CompilerParameters
lParams.CompilerOptions = "/target:library /rootnamespace:CompanyName /d:TRACE=TRUE /optimize "
lParams.IncludeDebugInformation = True
lParams.GenerateExecutable = False
lParams.TreatWarningsAsErrors = False
lParams.GenerateInMemory = True
Dim lProviderOptions As New Dictionary(Of String, String) From {{"CompilerVersion", "v4.0"}}
Dim lResult As CodeDom.Compiler.CompilerResults = Nothing
Using provider As New VBCodeProvider(lProviderOptions)
lResult = provider.CompileAssemblyFromSource(lParams, lSourceCode)
End Using
' ... check for errors
Dim lInstance As Object = lResult.CompiledAssembly.CreateInstance("CompanyName.DynamicOutput.Template")
lInstance.GetType.GetMethod("Generate").Invoke(lInstance, New Object() {Me.SpoolJob, Me.Print})
End Sub
I am trying to download files from FTP using SSIS script task, I have written some code to download files from FTP using the ftpWebRequest class which is working. But I also need to take in to account that we might be asked to download it from a sFTP. Since many are suggesting that WinSCP assemblies are the best way to download sFTP files, can some provide me with some examples to download files using a SSIS script with the WinSCP classes.
PS: I am new to Vb.net
Yes, as people have said the only option is to use a library like WinSCP.
Take a look at the examples here on the WinSCP website - http://winscp.net/eng/docs/script_vbnet_robust_example
Here is the source code from the example
Imports System
Imports System.IO
Imports System.Diagnostics
Imports System.Xml
Imports System.Xml.XPath
Imports System.Configuration.ConfigurationManager
Public Class SFTP
' SFTP support, built on WinSCP
Public Shared Function PutSFTP(ByRef filename As String, ByRef remotehost As String, ByRef username As String, ByRef password As String, _
Optional ByVal outfilename As String = Nothing, Optional ByVal output As String = Nothing,
Optional ByRef errmsg As String = Nothing) As Boolean
' Run hidden WinSCP process
Dim winscp As Process = New Process()
Dim logname As String = Path.ChangeExtension(Path.GetTempFileName, "xml")
With winscp.StartInfo
' SFTPExecutable needs to be defined in app.config to point to winscp.com
Try
.FileName = AppSettings("SFTPExecutable")
If .FileName Is Nothing OrElse .FileName.Length = 0 Then Throw (New Exception("from PutSFTP: SFTPExecutable not set in config file."))
Catch ex As Exception
errmsg = ex.Message
Return False
End Try
.Arguments = "/xmllog=" + logname
.UseShellExecute = False
.RedirectStandardInput = True
.RedirectStandardOutput = True
.CreateNoWindow = True
End With
Try
winscp.Start()
Catch ex As Exception
errmsg = "from PutSFTP: Could not run the WinSCP executable " & winscp.StartInfo.FileName & Environment.NewLine & ex.Message
Return False
End Try
' Feed in the scripting commands
With winscp.StandardInput
.WriteLine("option batch abort")
.WriteLine("option confirm off")
.WriteLine("open sftp://" & username & ":" & password & "#" & remotehost & "/")
If outfilename Is Nothing Then .WriteLine("put " & filename) Else .WriteLine("put " & filename & " """ & outfilename & """")
.Close()
End With
If output IsNot Nothing Then output = winscp.StandardOutput.ReadToEnd()
' Wait until WinSCP finishes
winscp.WaitForExit()
' Parse and interpret the XML log
' (Note that in case of fatal failure the log file may not exist at all)
If Not File.Exists(logname) Then
errmsg = "from PutSFTP: The WinSCP executable appears to have crashed."
Return False
End If
Dim log As XPathDocument = New XPathDocument(logname)
Dim ns As XmlNamespaceManager = New XmlNamespaceManager(New NameTable())
ns.AddNamespace("w", "http://winscp.net/schema/session/1.0")
Dim nav As XPathNavigator = log.CreateNavigator()
' Success (0) or error?
Dim status As Boolean = (winscp.ExitCode = 0)
If Not status Then
errmsg = "from PutSFTP: There was an error transferring " & filename & "."
' See if there are any messages associated with the error
For Each message As XPathNavigator In nav.Select("//w:message", ns)
errmsg &= Environment.NewLine & message.Value
Next message
End If
Try
My.Computer.FileSystem.DeleteFile(logname)
Catch ex As Exception
' at least we tried to clean up
End Try
Return status
End Function
End Class
I have the following code :
Imports System.Management
Module Module1
Private MicrosoftProcs As New List(Of String)
Private Sub FindMicrosoftProcs()
Dim searcher As New ManagementObjectSearcher("SELECT * FROM Win32_Process")
For Each p2 As ManagementObject In searcher.Get()
If p2("Name") <> "System" Or p2("Name") <> "System Idle Process" Or p2("Name") <> Process.GetCurrentProcess.ProcessName & ".exe" Then
Dim x As String = p2("ExecutablePath")
If Not x Is Nothing Then
If x.Length > 2 Then
Dim fvi As System.Diagnostics.FileVersionInfo = System.Diagnostics.FileVersionInfo.GetVersionInfo(p2("ExecutablePath").ToString)
Dim sDescription As String = fvi.CompanyName & "/" & fvi.LegalCopyright & "/" & fvi.LegalTrademarks & "/" & fvi.ProductName & "/" & fvi.FileDescription & "/"
If sDescription.ToLower.Contains("microsoft") Then
MicrosoftProcs.Add(p2("ExecutablePath"))
Debug.WriteLine("Microsoft process : " & p2("ExecutablePath"))
End If
End If
End If
End If
Next
End Sub
End Module
I am working on 64bit Windows but the code is compiled for 32bit Windows (for compatibility). If I run the code compiled for 64bit , i have not problems with the code, but if I run it compiled for 32bit I get the FileNotFoundException :
A first chance exception of type 'System.IO.FileNotFoundException' occurred in System.dll
System.IO.FileNotFoundException: C:\Windows\system32\csrss.exe
at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
at WindowsApplication1.Form1.Button1_Click(Object sender, EventArgs e) in C:\Users\Maximus\Documents\Visual Studio 2010\Projects\rupe\rupe\Form1.vb:line 81
And I don't know how to fix it. Can you help me please ? Thanks in advance.
I cannot seem to find an exact answer to this but I am quite sure that the problem is that 32bit processes do not have permission to access the modules of a 64 bit process. This is why you have no problems with your 64bit app but the 32bit app doesn't like certain processes. The best resource I could find for this was another SO question which you can read here: System.ArgumentException and System.ComponentModel.Win32Exception when getting process information.
That being said there doesn't appear to be a way to get the file information for these 64bit processes when you are running a 32bit app. If you absolutely need this information you have no choice but to build your app as 64bit. If you don't really need this information and want to just carry on with the processes that you have access to in a 32bit app you can try something like this:
Private Sub FindMicrosoftProcs()
Try
Dim searcher As New ManagementObjectSearcher("SELECT * FROM Win32_Process")
For Each p2 As ManagementObject In searcher.Get()
If p2("Name") <> "System" Or p2("Name") <> "System Idle Process" Or p2("Name") <> Process.GetCurrentProcess.ProcessName & ".exe" Then
Dim x As String = p2("ExecutablePath")
If Not x Is Nothing Then
If x.Length > 2 Then
Dim fvi As System.Diagnostics.FileVersionInfo
Try
fvi = System.Diagnostics.FileVersionInfo.GetVersionInfo(p2("ExecutablePath").ToString)
Dim sDescription As String = fvi.CompanyName & "/" & fvi.LegalCopyright & "/" & fvi.LegalTrademarks & "/" & fvi.ProductName & "/" & fvi.FileDescription & "/"
If sDescription.ToLower.Contains("microsoft") Then
MicrosoftProcs.Add(p2("ExecutablePath"))
Debug.WriteLine("Microsoft process : " & p2("ExecutablePath"))
End If
Catch ex As Exception
nSkipped += 1
End Try
End If
End If
End If
Next
MessageBox.Show("Found " & MicrosoftProcs.Count & " and skipped " & nSkipped & " files.")
Catch ex As Exception
MessageBox.Show("Error: " & ex.Message)
End Try
End Sub
I am trying to take text fields for old hostname, new hostname, username, and password and remotely change computer names. That part is working fantastic. It was all great until my manager saw it in action, since we have a policy against downloading and using freeware.
It's not freeware if I made it. Unfortunately, he sent it to my director, and know my director knows I know a little bit about Visual Basic, so he wants to loop the names from a CSV file, change the name, and send a message to the end user instructing them to save their files and reboot.
Unfortunately, net send has gone the way of XP since Vista. However, from Vista - Win8.1, there's a utility called msg.exe in C:\Windows\System32. In order to use it, the target computer has to have the registry value AllowRemoteRPC in HKLM\SYSTEM\CurrentControlSet\Control\Terminal Services set to 1.
So here's what the app does:
Reads the DWORD key AllowRemoteRPC and stores it to a variable (MyVal), changes the key to 1, attempts to send the message alerting the user they need to restart, changes the key back to MyVal, and then executes netdom renamecomputer and renames the PC. Everything works perfectly EXCEPT sending the message. I can open up a command prompt and type:
msg /server:hostname * /v /time:3600 "my message here
And it works perfectly (after manually editing the registry key to the needed value).
However, running it from VB doesn't work. Here's what I've tried:
"msg /server:" & hostname & " * /v /time:3600 ""my message here"""
"cmd.exe /D /c msg /server:" & hostname & " * /v /time:3600 ""my message here"""
Neither seems to work. I know the registry value is being changed. I put message boxes after each step in my and refreshed the regedit to actually see the value of the DWORD key, and it is changing. Everything APPEARS to be going smoothly, the message is just not getting sent.
I do have these commands running as arguments to a function I created in order to create a process so I could output the streamreader to a listbox.
Here's my code. Please keep in mind, I'm barely over 2 months into learning visual basic, so it's probably not the prettiest code out there:
Imports System
Imports System.IO
Imports System.Diagnostics
Imports System.Security.Permissions
Imports Microsoft.Win32
Public Class applicationMain
Private Sub btnExecute_Click(sender As Object, e As EventArgs) Handles btnExecute.Click
Dim oldPC As String = txtOldPC.Text
Dim newPC As String = txtNewPC.Text
Dim username As String = txtUsername.Text
Dim password As String = txtPassword.Text
If oldPC <> "" And newPC <> "" And username <> "" And password <> "" Then
Dim MyReg As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, oldPC)
Dim MyRegKey As Microsoft.Win32.RegistryKey
Dim MyVal As String
lbOutput.Items.Clear()
MyRegKey = MyReg.OpenSubKey("System\CurrentControlSet\Control\Terminal Server")
MyVal = MyRegKey.GetValue("AllowRemoteRPC", RegistryValueKind.DWord)
MyRegKey.Close()
lbOutput.Items.Add("Processing registry changes...")
Try
MyRegKey = MyReg.OpenSubKey("System\CurrentControlSet\Control\Terminal Server", True)
MyRegKey.SetValue("AllowRemoteRPC", &H1, RegistryValueKind.DWord)
Catch ex As Exception
MessageBox.Show("An Error Has Occured:" & vbCrLf & vbCrLf & ex.ToString())
lbOutput.Items.Add("")
lbOutput.Items.Add("ABORTED!")
Exit Sub
End Try
lbOutput.Items.Add("Success!")
lbOutput.Items.Add("Sending message to user:")
Try
ExecuteCommand("cmd.exe", "/D /c msg /SERVER:" & oldPC & ".na.int.grp * /v /TIME:3600 ""Changes have been made by IS to your computer that require a restart. Please save your files and restart your computer to avoid service interruption.""")
Catch ex As Exception
MessageBox.Show("An Error Has Occured:" & vbCrLf & vbCrLf & ex.ToString())
lbOutput.Items.Add("")
lbOutput.Items.Add("ABORTED!")
MyRegKey = MyReg.OpenSubKey("System\CurrentControlSet\Control\Terminal Server", True)
MyRegKey.SetValue("AllowRemoteRPC", MyVal, RegistryValueKind.DWord)
Exit Sub
End Try
lbOutput.Items.Add(" Message: ""Changes have been made by IS to your computer that require a restart. Please save your files and restart your computer to avoid service interruption."" ")
lbOutput.Items.Add("Reverting registry changes...")
Try
MyRegKey = MyReg.OpenSubKey("System\CurrentControlSet\Control\Terminal Server", True)
MyRegKey.SetValue("AllowRemoteRPC", MyVal, RegistryValueKind.DWord)
Catch ex As Exception
MessageBox.Show("An Error Has Occured:" & vbCrLf & vbCrLf & ex.ToString())
lbOutput.Items.Add("")
lbOutput.Items.Add("ABORTED!")
Exit Sub
End Try
Try
ExecuteCommand("netdom", "renamecomputer " & oldPC & " /newname:" & newPC & " /userD:na\" & username & " /passwordd:" & password & " /usero:na\" & username & " /passwordo:" & password & " /Force")
Catch ex As Exception
MessageBox.Show("An Error Has Occured:" & vbCrLf & vbCrLf & ex.ToString())
lbOutput.Items.Add("")
lbOutput.Items.Add("ABORTED!")
Exit Sub
End Try
lbOutput.Items.Add("Success!")
lbOutput.Items.Add("")
lbOutput.Items.Add("Rename successful for " & oldPC & "!")
lbOutput.Items.Add("******************************************************************")
lbOutput.Items.Add("")
End If
End Sub
Private Function ExecuteCommand(ByVal cmd As String, ByVal arguments As String)
Dim cmdProcess As New Process()
Dim cmdProcessStartInfo As New ProcessStartInfo()
Dim cmdStreamReader As IO.StreamReader
Dim output As String
cmdProcessStartInfo.UseShellExecute = False
cmdProcessStartInfo.CreateNoWindow = True
cmdProcessStartInfo.RedirectStandardOutput = True
cmdProcessStartInfo.FileName = cmd
cmdProcessStartInfo.Arguments = arguments
cmdProcess.StartInfo = cmdProcessStartInfo
cmdProcess.Start()
cmdStreamReader = cmdProcess.StandardOutput
Do While cmdStreamReader.EndOfStream = False
output = cmdStreamReader.ReadLine()
lbOutput.SelectedIndex = lbOutput.Items.Count - 1
lbOutput.Items.Add(output)
Loop
cmdProcess.WaitForExit()
cmdProcess.Close()
Return vbNull
End Function
End Class
What do you know. There's actually nothing wrong with my code at all. While trying to play around with the paths variable, I decided "Fuhgeddaboudit, I'll just add the executable to the project!". Right clicked the project, Add -> Existing Item. Selected Executable as the type, and went to C:\Windows\System32 and, get this now, msg.exe wasn't there. At all. Opened Explorer and went to System32, msg.exe was there. For whatever reason, Visual Studio cannot see the program at all. Which is in and of itself weird.
So I copied msg.exe to my desktop, added it to source, the program works like a charm now.