i am writing a simple program to get the all the properties of a process like ffmpeg . i got most properties of predefined functions but i want to know the argument which i gave to the ffmpeg in vb.net?
For Each prog As Process In Process.GetProcesses
If prog.ProcessName = "ffmpeg" Then
al.Add(prog.Id)
End If
Next
For Each id In al
Dim p As Process = Process.GetProcessById(id)
listBox3.Items.Add(Process.GetProcessById(id).ProcessName)
ListBox3.Items.Add(p.BasePriority)
ListBox3.Items.Add(p.HandleCount)
ListBox3.Items.Add(p.Id)
ListBox3.Items.Add(p.MainWindowTitle)
ListBox3.Items.Add(p.MaxWorkingSet)
ListBox3.Items.Add(p.MinWorkingSet)
ListBox3.Items.Add(p.PriorityBoostEnabled)
ListBox3.Items.Add(p.PriorityClass)
ListBox3.Items.Add(p.PrivilegedProcessorTime)
ListBox3.Items.Add(p.ProcessName)
ListBox3.Items.Add(p.ProcessorAffinity)
ListBox3.Items.Add(p.StartTime)
ListBox3.Items.Add(p.TotalProcessorTime)
ListBox3.Items.Add(p.UserProcessorTime)
lastBox3.Items.Add(p.WaitForInputIdle)
ListBox3.Items.Add("========================")
Next id
Using Jesse Slicer's code as a base from here:
Public Class Form1
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
For Each proc As Process In Process.GetProcessesByName("ffmpeg")
Debug.Print("ID: " & proc.Id)
Debug.Print("Arguments: " & proc.GetCommandLine)
Debug.Print("------------------------------")
Next
End Sub
End Class
Public Module Extensions
<Runtime.CompilerServices.Extension()>
Public Function GetCommandLine(ByVal proc As Process) As String
' Project --> Add Reference --> System.Management
Dim arguments As New System.Text.StringBuilder
Using searcher As New Management.ManagementObjectSearcher("SELECT CommandLine FROM Win32_Process WHERE ProcessId = " & proc.Id)
For Each arg In searcher.Get
arguments.Append(arg("CommandLine") & " ")
Next
End Using
Return arguments.ToString.Trim
End Function
End Module
Note that you need to add the System.Management reference, and I made the function an extension method of the Process class.
ffmpeg is open source, so Might it will be useful:
https://ffmpeg.org/documentation.html
Related
First a little background information: The purpose of this application is to capture images and save them automatically to a network directory that will be either created or appended using the input of the text box. This code DOES work on my computer (windows 7 home 64 bit). I've created it using microsoft visual basic express 2010.
However..... when attempting to run the application on a windows 10 tablet, I get the follow errors:
On form load:
An error occurred while capturing the image. The video capture will now be terminated.
Object reference not set to an instance of an object.
On button2_Click Event:
Object reference not set to an instance of an object.
Below is the entirety of the code.
Form2.vb
Public Class Form2
Public scanIsSet As Boolean
Private webcam As WebCam
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
webcam = New WebCam()
webcam.InitializeWebCam(imgVideo)
webcam.Start()
scanIsSet = False
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim CFGfile As String
Dim SaveDir As String
Dim imgIndex As Integer
Dim existingImages() As String
SaveDir = "C:\somepath\"
'save image to directory with index number
Try
imgCapture.Image.Save(SaveDir & OrderNumber.Text & "\" & CStr(imgIndex) & ".jpg")
Catch ex As Exception
MsgBox("error while accessing object imgCapture" & ex.Message)
End Try
imgIndex = imgIndex + 1
Else
Beep()
MsgBox("Please scan or type in order number first")
End If
End Sub
End Class
WebCam.vb
Imports System
Imports System.IO
Imports System.Linq
Imports System.Text
Imports WebCam_Capture
Imports System.Collections.Generic
Imports ZXing
Imports ZXing.OneD
'Design by Pongsakorn Poosankam
Class WebCam
Public scanz As Boolean
Public Sub setScan(ByVal x As Boolean)
scanz = x
End Sub
Private webcam As WebCamCapture
Private _FrameImage As System.Windows.Forms.PictureBox
Private FrameNumber As Integer = 30
Public Sub InitializeWebCam(ByRef ImageControl As System.Windows.Forms.PictureBox)
webcam = New WebCamCapture()
webcam.FrameNumber = CULng((0))
webcam.TimeToCapture_milliseconds = FrameNumber
AddHandler webcam.ImageCaptured, AddressOf webcam_ImageCaptured
_FrameImage = ImageControl
End Sub
Private Sub webcam_ImageCaptured(ByVal source As Object, ByVal e As WebcamEventArgs)
_FrameImage.Image = e.WebCamImage
If scanz = True Then
Dim BCreader As New ZXing.BarcodeReader
'BCreader.Options.TryHarder = True
Try
Dim resu As Result = BCreader.Decode(e.WebCamImage)
Form2.OrderNumber.Text = resu.Text
setScan(False)
Form2.Label2.Text = ""
Beep()
Catch ex As Exception
'do nothing
End Try
End If
End Sub
Public Sub Start()
webcam.TimeToCapture_milliseconds = FrameNumber
webcam.Start(0)
End Sub
Public Sub [Stop]()
webcam.[Stop]()
End Sub
Public Sub [Continue]()
' change the capture time frame
webcam.TimeToCapture_milliseconds = FrameNumber
' resume the video capture from the stop
webcam.Start(Me.webcam.FrameNumber)
End Sub
Public Sub ResolutionSetting()
webcam.Config()
End Sub
Public Sub AdvanceSetting()
webcam.Config2()
End Sub
End Class
As you can see toward the end of Form2.vb, I've wrapped imgCapture.Image.Save(SaveDir & OrderNumber.Text & "\" & CStr(imgIndex) & ".jpg") in a Try-Catch block because I suspect it's some sort of problems with the pictureBox objects. The try catch block does indeed catch the exception, but I still have no idea what the problem is, why it happens on the tablet and not the PC, or how to fix it.
I've found similar questions, but none with a solution I can make use of.
Since you are using a library, EasyWebCam, that is outdated and not compatible with Win10, I would suggest switching libraries. Other options out there:
DirectX.Capture
Windows.Media.Capture
I FOUND THE SOLUTION BUT I DON'T KNOW IF YOU NEED IT NOW ANYWAY THE PROBLEM IS IF YOU HAVE CHANGED THE PICTUREBOX NAME THEN IN REFENCES USE THE EXACT NAME YOU HAVE CHANGED TO. EXAMPLE IF I CHANGE ALL MY PICTUREBOX NAMES AS -
PictureBox_A1 , PictureBox_A2 ,... and so on then my refence should be as -
Dim r As DataRow
For Each r In t1.Rows
CType(Controls("PictureBox_" & r(2)), PictureBox).Image = bookedicon
Next
MY REFERENCE IS - "PictureBox_"
So my problem is:
I have a List of a custom Type {Id as Integer, Tag() as String},
and i want to perform a multiple-criteria search on it; eg:
SearchTags={"Document","HelloWorld"}
Results of the Search will be placed a ListBox (ListBox1) in this format:
resultItem.id & " - " & resultItem.tags
I already tried everything i could find on forums, but it didn't work for me (It was for db's or for string datatypes)
Now, i really need your help. Thanks in advance.
For Each MEntry As EntryType In MainList
For Each Entry In MEntry.getTags
For Each item As String In Split(TextBox1.Text, " ")
If Entry.Contains(item) Then
If TestIfItemExistsInListBox2(item) = False Then
ListBox1.Items.Add(item & " - " & Entry.getId)
End If
End If
Next
Next
Next
Example Custom Array:
(24,{"snippet","vb"})
(32,{"console","cpp","helloworld"})
and so on...
I searched for ("Snippet vb test"):
snippet vb helloWorld - 2
snippet vb tcpchatEx - 16
cs something
test
So, i'll get everything that contains one of my search phrases.
I expected following:
snippet vb tcp test
snippet vb dll test
snippet vb test metroui
So, i want to get everything that contains all my search phrases.
My entire, code-likely class
Imports Newtonsoft.Json
Public Class Form2
Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load
End Sub
Dim MainList As New List(Of EntryType)
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
MainList.Clear()
Dim thr As New Threading.Thread(AddressOf thr1)
thr.SetApartmentState(Threading.ApartmentState.MTA)
thr.Start()
End Sub
Delegate Sub SetTextCallback([text] As String)
Private Sub SetTitle(ByVal [text] As String) ' source <> mine
If Me.TextBox1.InvokeRequired Then
Dim d As New SetTextCallback(AddressOf SetTitle)
Me.Invoke(d, New Object() {[text]})
Else
Me.Text = [text]
End If
End Sub
Sub thr1()
Dim linez As Integer = 1
Dim linex As Integer = 1
For Each line As String In System.IO.File.ReadAllLines("index.db")
linez += 1
Next
For Each line As String In System.IO.File.ReadAllLines("index.db")
Try
Application.DoEvents()
Dim a As saLoginResponse = JsonConvert.DeserializeObject(Of saLoginResponse)(line) ' source <> mine
Application.DoEvents()
MainList.Add(New EntryType(a.id, Split(a.tags, " ")))
linex += 1
SetTitle("Search (loading, " & linex & " of " & linez & ")")
Catch ex As Exception
End Try
Next
SetTitle("Search")
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim searchTags() As String = TextBox1.Text.Split(" ")
Dim query = MainList.Where(Function(et) et.Tags.Any(Function(tag) searchTags.Contains(tag))).ToList
For Each et In query
ListBox1.Items.Add(et.Id)
Next
End Sub
Private Sub Button4_Click(sender As Object, e As EventArgs) ' test
MsgBox(Mid(ListBox1.SelectedItem.ToString, 1, 6)) ' test
End Sub 'test, removeonrelease
End Class
Public Class EntryType
Public Property Id As Integer
Public Property Tags() As String
Public Sub New(ByVal _id As Integer, ByVal _tags() As String)
Me.Id = Id
Me.Tags = Tags
End Sub
Public Function GetTags() As String
'to tell the Listbox what to display
Return Tags
End Function
Public Function GetId() As Integer
'to tell the Listbox what to display
Return Id
End Function
End Class
I also edited your EntryType class; I added a constructor, removed toString and added GetTags and GetID.
Example "DB" im working with ("db" as "index.db" in exec dir):
{"tags":"vb.net lol test qwikscopeZ","id":123456}
{"tags":"vb.net lol test","id":12345}
{"tags":"vb.net lol","id":1234}
{"tags":"vb.net","id":123}
{"tags":"cpp","id":1}
{"tags":"cpp graphical","id":2}
{"tags":"cpp graphical fractals","id":3}
{"tags":"cpp graphical fractals m4th","id":500123}
Error:
Debugger:Exception Intercepted: _Lambda$__1, Form2.vb line 44
An exception was intercepted and the call stack unwound to the point before the call from user code where the exception occurred. "Unwind the call stack on unhandled exceptions" is selected in the debugger options.
Time: 13.11.2014 03:46:10
Thread:<No Name>[5856]
Here is a Lambda query. The Where filters on a predicate, since Tags is an Array you can use the Any function to perform a search based on another Array-SearchTags. You can store each class object in the Listbox since it stores Objects, you just need to tell it what to display(see below).
Public Class EntryType
Public Property Id As Integer
Public Property Tags() As As String
Public Overrides Function ToString() As String
'to tell the Listbox what to display
Return String.Format("{0} - {1}", Me.Id, String.Join(Me.Tags, " "))
End Function
End Class
Dim searchTags = textbox1.Text.Split(" "c)
Dim query = mainlist.Where(Function(et) et.Tags.Any(Function(tag) searchTags.Contains(tag))).ToList
For Each et In query
Listbox1.Items.Add(et)
Next
This message is displayed when running my windows service.
The [service name] service on local computer started and then stopped.
Some Services stop automatically if they are not in use by another services or programs.
I am not sure what is causing this error. Below is the code for my service. My code uses another class called MagentoSalesOrder. I ran this code as a console application first and it worked just fine. I believe this what is causing the error. When I comment out the lines that use that class my service runs fine for printing test to a file.
Imports MyFirstService.MagentoSalesOrder
Public Class MyFirstService
Dim WithEvents timer1 As New System.Timers.Timer
Protected Overrides Sub OnStart(ByVal args() As String)
timer1.Interval = 10000
timer1.Start()
WriteLog(Me.ServiceName & " has started ...")
End Sub
Protected Overrides Sub OnStop()
WriteLog(Me.ServiceName & " has stopped ...")
End Sub
Private Sub timer1_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles timer1.Elapsed
WriteLog(Me.ServiceName & " is running ...")
End Sub
Private Sub WriteLog(ByVal strMessage As String)
Dim strPath As String, file As System.IO.StreamWriter
Dim test As New MagentoSalesOrder()
strPath = AppDomain.CurrentDomain.BaseDirectory & "\MyService.log"
file = New System.IO.StreamWriter(strPath, True)
Dim arr = test.BuildPreOrder()
If (arr.Length > 0) Then
For Each element As Long In arr
file.WriteLine("PreOrder created: " + element)
Next
Else
file.WriteLine("No orders to process")
End If
'file.WriteLine("Test")
file.Close()
End Sub
End Class
So I found out my error was coming from the file.writeline in my foreach loop.
Changing element to element.toString in my writefile fixed my service.
The problem came from trying to concatenate a Long to a String.
Changing element to element.toString in my writefile fixed my service.
Here's my script code:
Imports System.Diagnostics
Public Class Script
Implements IScript
Public Sub DoWork(w As WebBrowser, f As Form1) Implements IScript.DoWork
w.Navigate("http://www.google.com")
wait("5000")
w.Document.All("input").InvokeMember("click")
w.Document.All("input").SetAttribute("value", "Torrenter is the best!")
wait("2000")
w.Document.All("421").InvokeMember("click")
wait("1000")
End Sub
Public Sub wait(ByVal interval As Integer)
Dim sw As New Stopwatch
sw.Start()
Do While sw.ElapsedMilliseconds < interval
' Allows UI to remain responsive
Application.DoEvents()
Loop
sw.Stop()
End Sub
End Class
In-code:
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
If int1.Text = "1" Then
int1.Text = "0"
Dim script As IScript = GenerateScript(File.ReadAllText(ListBox2.Items.Item(int2).ToString()))
script.DoWork(WebBrowser1, Me) 'Object reference not set to an instance of an object.
int2 = int2 + 1
int1.Text = "1"
End If
End Sub
Why? :(
It's supposed to start the next script after the first was done. I tried 4 methods but I can't understand why.
The problem is that your script code is failing to compile, but then you are trying to instantiate an object from the compiled assembly anyway. Since it failed to compile, the assembly doesn't actually exist, hence the error. If you modify the Return line in the GenerateScript method, so that it shows the compile errors, the actual problem will be more clear:
Dim results As CompilerResults = provider.CompileAssemblyFromSource(parameters, codes)
If results.Errors.HasErrors Then
Dim builder As New StringBuilder()
builder.AppendLine("Script failed to compile due to the following errors:")
For Each i As CompilerError In results.Errors
builder.AppendFormat("Line {0}: {1}", i.Line, i.ErrorText)
builder.AppendLine()
Next
Throw New Exception(builder.ToString())
Else
Return CType(results.CompiledAssembly.CreateInstance("Script"), IScript)
End If
I suspect that one of the reasons it's failing to compile is because the script uses IScript which is undefined. The reason it would complain that it's undefined is for two reasons. First, you declared the IScript interface as nested inside the Form1 class. You should move that outside of the form class so that it's not nested inside of any other type. Second, you are not specifying the full namespace nor importing the namespace in your script. You can automatically add the Imports line to the beginning of the script code before compiling it, like this:
Dim interfaceNamespace As String = GetType(IScript).Namespace
Dim codes As String = "Imports " & interfaceNamespace & Environment.NewLine & code
As I mentioned in the comments above, you really ought to be passing a string array into the CompileAssemblyFromSource method, not a string. I'm not sure how that even compiles, unless that's something having Option Strict Off somehow allows? In any case, it expects an array, so you should really be giving it one, like this:
Dim interfaceNamespace As String = GetType(IScript).Namespace
Dim codeArray() As String = New String() {"Imports " & interfaceNamespace & Environment.NewLine & code}
Dim results As CompilerResults = provider.CompileAssemblyFromSource(parameters, codeArray)
Another obvious reason why the script would fail to compile is because you have it using methods and properties of your Form1 class, as if it were a member of that class. Remember, the Script class defined by the script file source code is a completely separate class in a separate assembly. It will have no reference to the form unless you give it a reference, for instance, you could define the interface like this:
Public Interface IScript
Sub DoWork(f As Form1)
End Interface
Then, in your script, you could do this:
Public Class Script
Implements IScript
Public Sub DoWork(f As Form1) Implements IScript.DoWork
f.WebBrowser1.Navigate("http://www.google.com")
f.wait("5000")
f.wait("4000")
f.WebBrowser1.Document.All("input").InvokeMember("click")
f.WebBrowser1.Document.All("input").SetAttribute("value", "User")
f.wait("2000")
f.WebBrowser1.Document.All("421").InvokeMember("click")
End Sub
End Class
UPDATE
Ok, since you can't get it working, and I don't want this whole conversation to be a total loss, I put together a working project and tested it. Here's what you need to do to get it to work.
Contents of IScript.vb
Public Interface IScript
Sub DoWork(w As WebBrowser)
End Interface
Contents of Form1.vb
Imports Microsoft.VisualBasic
Imports System.CodeDom.Compiler
Imports System.Reflection
Imports System.IO
Imports System.Text
Public Class Form1
Dim int1 As Integer = 0
Dim int2 As Integer = 0
Dim p As Point
Public Function GenerateScript(ByVal code As String) As IScript
Using provider As New VBCodeProvider()
Dim parameters As New CompilerParameters()
parameters.GenerateInMemory = True
parameters.ReferencedAssemblies.Add(GetType(WebBrowser).Assembly.Location)
parameters.ReferencedAssemblies.Add(Assembly.GetExecutingAssembly().Location)
Dim interfaceNamespace As String = GetType(IScript).Namespace
code = "Imports System.Windows.Forms" & Environment.NewLine & "Imports " & interfaceNamespace & Environment.NewLine & code
Dim results As CompilerResults = provider.CompileAssemblyFromSource(parameters, code)
If results.Errors.HasErrors Then
Dim builder As New StringBuilder()
builder.AppendLine("Script failed to compile due to the following errors:")
For Each i As CompilerError In results.Errors
builder.AppendFormat("Line {0}: {1}", i.Line, i.ErrorText)
builder.AppendLine()
Next
Throw New Exception(builder.ToString())
Else
Return CType(results.CompiledAssembly.CreateInstance("Script"), IScript)
End If
End Using
End Function
Public Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
For Each File As FileInfo In New System.IO.DirectoryInfo(Application.StartupPath & "/scripts").GetFiles
If CheckedListBox1.GetItemCheckState(int2) = CheckState.Checked Then
ListBox1.Items.Add(File.FullName)
End If
int2 = int2 + 1
Next
int2 = 0
Dim script As IScript = GenerateScript(File.ReadAllText(ListBox1.Items.Item(int2).ToString()))
script.DoWork(WebBrowser1)
End Sub
End Class
Contents of script file
Imports System.Diagnostics
Public Class Script
Implements IScript
Public Sub DoWork(w As WebBrowser) Implements IScript.DoWork
w.Navigate("http://www.google.com")
wait("5000")
wait("4000")
w.Document.All("input").InvokeMember("click")
w.Document.All("input").SetAttribute("value", "User")
wait("2000")
w.Document.All("421").InvokeMember("click")
End Sub
Public Sub wait(ByVal interval As Integer)
Dim sw As New Stopwatch
sw.Start()
Do While sw.ElapsedMilliseconds < interval
' Allows UI to remain responsive
Application.DoEvents()
Loop
sw.Stop()
End Sub
End Class
How to determine windows build number using vb.net or c#? I do not want to use win32 API.
System.OperatingSystem osInfo = System.Environment.OSVersion;
http://support.microsoft.com/kb/304283
more detailed blog post : http://andrewensley.com/2009/06/c-detect-windows-os-part-1/
The HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion registry key should contain it. I'm not sure if you can reference it without the win32 API, but you might be able to...
corsiKa got me on the right track, but it very much depends on what you need. I wanted the full build number, which changes with every Windows 10 Cumulative Update. (ex. 16299.192)
The WMI method is good, but only gets you 10.0.16299, which is the overall release. I used the WMI Code Creator to poke around, but couldn't find the "192" part in WMI.
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\UBR
Has the 192 part of the build number.
I settled on this code to get 10.0.16299.192:
Function GetOSVersion() As String
Dim strBuild1, strBuild2, strBuild3, strBuild4 As String
Dim regKey As Microsoft.Win32.RegistryKey
regKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\Windows NT\CurrentVersion")
strBuild1 = regKey.GetValue("CurrentMajorVersionNumber")
strBuild2 = regKey.GetValue("CurrentMinorVersionNumber")
strBuild3 = regKey.GetValue("CurrentBuild")
strBuild4 = regKey.GetValue("UBR")
Return strBuild1 & "." & strBuild2 & "." & strBuild3 & "." & strBuild4
End Function
You can get it through WMI. .Net 2.0
Imports System.Management
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Call GetOSVersion()
End Sub
Private Sub GetOSVersion()
Dim sCaption As String = String.Empty
Dim sVersion As String = String.Empty
Dim searcher As New ManagementObjectSearcher("root\CIMV2", _
"SELECT * FROM Win32_OperatingSystem")
For Each queryObj As ManagementObject In searcher.Get()
sCaption = DirectCast(queryObj("Caption"), String)
sVersion = DirectCast(queryObj("Version"), String)
Next
Debug.WriteLine("OS: " & sCaption & " Ver " & sVersion)
End Sub
End Class