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vb.net application Hot folder

So the question is how can I get a vb.net app to watch a folder and then run commands on a file once it's completed transferring into that folder?
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cpservice
Asked:
cpservice
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1 Solution
 
sdrouinsCommented:
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sdrouinsCommented:
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cpserviceAuthor Commented:
This project is in C## as is all the help. Any idea how this goes in VB.net?
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Éric MoreauSenior .Net ConsultantCommented:
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sdrouinsCommented:
You have juste to drop a FileSystemWatcher in your form and in the code your trap event you want....
Changed
Created
Deleted
Renamed

can't be more simple.....
example for changed (FileSystemWatcher1= id of my object dropped)
Private Sub FileSystemWatcher1_Changed(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Changed

    End Sub

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cpserviceAuthor Commented:
This is what I have but it seems not to work.... I get no errors in code though...
Imports System.IO

Public Class Form1
    Inherits System.Windows.Forms.Form
    Public Function ExecCommand(ByRef CommandLine As String, _
                            Optional ByRef Arguments As String = "", _
                            Optional ByRef Waitforexit As Boolean = True) As Integer
        Dim psi As New ProcessStartInfo()
        Dim p As Process

        With psi
            .FileName = CommandLine
            .Arguments = Arguments
            .WindowStyle = ProcessWindowStyle.Hidden 'This avoid a text window being opened
        End With
        Try
            p = Process.Start(psi) 'This line runs the command
            If Waitforexit Then p.WaitForExit() 'This wait until the command ends
            Return p.ExitCode
        Catch e As System.Exception
            'Catch errors here
        End Try
    End Function

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents lstFiles As System.Windows.Forms.ListBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.lstFiles = New System.Windows.Forms.ListBox
        Me.SuspendLayout()
        '
        'lstFiles
        '
        Me.lstFiles.Dock = System.Windows.Forms.DockStyle.Fill
        Me.lstFiles.Location = New System.Drawing.Point(0, 0)
        Me.lstFiles.Name = "lstFiles"
        Me.lstFiles.Size = New System.Drawing.Size(1025, 368)
        Me.lstFiles.TabIndex = 0
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(1025, 372)
        Me.Controls.Add(Me.lstFiles)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private m_WatchDirectory As String
    Private WithEvents m_FileSystemWatcher As FileSystemWatcher

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        lstFiles.Items.Add(Now.ToString() & " Starting")

        ' Get the path to the directory we will watch.
        'm_WatchDirectory = Application.StartupPath
        'm_WatchDirectory = m_WatchDirectory.Substring(0, m_WatchDirectory.LastIndexOf("\"))
        m_WatchDirectory &= "c:\docume~1\username\desktop\howtofolderwatcher\baton\bad"

        ' Make the FileSystemWatcher.
        m_FileSystemWatcher = New FileSystemWatcher(m_WatchDirectory, "*.mpg")
        m_FileSystemWatcher.NotifyFilter = 0
        m_FileSystemWatcher.NotifyFilter = m_FileSystemWatcher.NotifyFilter Or NotifyFilters.FileName
        m_FileSystemWatcher.EnableRaisingEvents = True

        ' Process any files that already exist.
        ProcessExistingFiles(m_WatchDirectory)
    End Sub

    ' Process a new file.
    Private Sub m_FileSystemWatcher_Created(ByVal sender As Object, ByVal e As System.IO.FileSystemEventArgs) Handles m_FileSystemWatcher.Created
        ProcessFile(e.FullPath)
    End Sub

    ' Process existing files.
    Private Sub ProcessExistingFiles(ByVal directory_name As String)
        Dim dir_info As New DirectoryInfo(directory_name)
        Dim file_infos As FileInfo() = dir_info.GetFiles()
        For Each fi As FileInfo In file_infos
            ProcessFile(fi.FullName)
        Next fi
    End Sub

    ' Process a file.
    Private Sub ProcessFile(ByVal file_name As String)
        lstFiles.Items.Add(Now.ToString() & " Processed " & file_name)
        'ExecCommand("cmd", " /c " & "c:\docume~1\username\desktop\howtofolderwatcher\baton\bad\dtrmxutil.exe " & file_name & " " & file_name & ".mpg" & " 6000000", Waitforexit:=True)

    End Sub

End Class

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Éric MoreauSenior .Net ConsultantCommented:
can you try a simpler forlder like c:\test
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cpserviceAuthor Commented:
Thank you!
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