StandardOut Has Not Been Redirected Or The Process Hasn't Started Yet?
Jan 20, 2010
I run a program based on a timer in VB.NET, and it executes just fine when I don't try to retrieve the output. For some reason, though, I constantly get an error on the Dim myOutput line... Can anyone spot my error? output is a string.Error: StandardOut has not been redirected or the process hasn't started yet.
Dim fetch As New System.Diagnostics.ProcessStartInfo("C:/perlprog.pl")
fetch.WindowStyle = ProcessWindowStyle.Hidden
Dim executable As System.Diagnostics.Process
I am trying to create an app that will perform actions on specific times (much like the Windows Task Scheduler). I am currently using Process.Start() to lunch the file (or exe) required by the task. I am initiating a process by calling a file (an .mp3) and the process starts WMP (since it is the default application), so far so good. Now I wan't to kill that process. I know that it is normal behavior for the Process.Start(string, string) to return nothing (null in C#) in this case. So I am asking how can i close WMP when I called it through Process.Start(string, string)??
I want to know if there is a way to get each new process (what has been started) in a real-time manner (instantly). I tried until now something like:
1. Getting the number of opened/running processes
2. If the number is different from the previous check then the program is scanning each process (what is running) using a timer, each process has assigned its "pid" (using array) -- so if there is a new "pid" the process will be scanned -- else the process will be skipped. (scanning: getting its "object" path and creating a md5 signature etc.) This is working but is inefficient(very)...
whenever i start my app and let it start a process, and the process dies or gets killed my app goes down too. but this only occurs when i'm debugging, not when i run the program
I have searched the www but so far cannot see how to do it. Perhaps via a try/catch statement?
How can I test if a process can be started in vb before actually starting it, e.g. when I use process.start("<name>.exe") ....
but before doing that I would like to make sure that it will be callable.. is this possible at all? maybe by using some kind of My.Computer .FileSystem .FileExists ("<name>.exe") statement?
first of all, I'm not 100% sure this is the right forum to post this, as there seems ot be tones and tones of forum branches here, so if I'm not in the right location, i'm creating an IDE for a proamming language and I need a way to monitor the physical memmory usage of a process tree. I'm not talking about the WorkngSet64 of a process, but the WorkingSet64 of the process and any child process started by it.
I'm trying to get a process (wmplayer) started with a maximised main window. I've tried:
Dim VidPROC As System.Diagnostics.Process Dim startInfo As New ProcessStartInfo("wmplayer", "C:MyVideo.mpg") startInfo.WindowStyle = ProcessWindowStyle.Maximized VidPROC = Process.Start(startInfo)
but the process starts with a standard, small empty mplayer window, NOT maximised. (If I change .Maximised to .Hidden it starts hidden, but seems to ignore it when set to .Maximised).
I am currently trying to write a little wrapper around post-review to automatically post however this function fails when it comes to Dim results As String = sOut.ReadToEnd() and I can;t suss out why,
Edit: It doesn't produce an error it just seems to go into ReadToEnd() never to return
Function postReview() As String Dim psi As ProcessStartInfo = New System.Diagnostics.ProcessStartInfo("cmd.exe") psi.UseShellExecute = False
[code]....
Further Info: The actual command is working as I can see it posting to Review Board. But it just seems to get stuck in a loop while waiting on the Stream to complete. I have tried with Read and Readline with no luck?
I'm using excel via interop in application.Sometimes users kill application that created excel instance and that results in excel instance sitting in memory without any chance of disposing it.First I tried to tackle this using ROT(running object table) looks like not all instances of excel are registered there.Than I tried to somehow mark excel process after it is started via interop.[code]This works as long as excel is visible but in my case excel window is invisible.All I need is to somehow mark process that started via automation with the parent PID, so that later I can kill it if parent does not exist.
Our application needs to communicate with another program through a COM interface. The interface will not work if the other program is started with "Run as Administrator". Would like to detect if this other process is in this state and warn the user.
Me.AcceptButton = ExecuteButton MyProcess = New Process With MyProcess.StartInfo
[Code]....
When the app is finished it displays an "OK" message box. How can I detect the message box and then how can I trigger an equivalent OK click in the app?
I cant grab the whole response because it is 200 MB- what can I do to JUST GET THE URLHere is my code:
Dim request1 As HttpWebRequest = DirectCast(HttpWebRequest.Create(urlvimeohd), HttpWebRequest) request1.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like
I am using visual basic 2005. I found on the web the following function that extracts HTML from webpages. It is very useful but unfortunately it does not work with redirected pages. That is, when I put in it a URL of a redirect page it gives me nothing or error. I added to it ".AllowAutoRedirect = True" but still it did not work. I wonder how to make it work for redirected pages.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Call IsURLValid() Timer1.Interval = 50
[CODE]...
I have this excerpt from my code giving me trouble, it keeps telling me that StandardIn was not redirected. maybe im missing something but its getting late and its harder to tell. (Visual Studio 11)
But as soon as I click the home link its redirected back to login page. This code works fine with another URL. I tried by putting id, everything. but couldn't figure out why its behaving like this.
I'm redirecting a acronis cmd script to a text box, when its running it looks like this[code]...
im trying to capture the percentage so it can be used for a value in a progressbar. my question is how do i remove the (.)%# characters and where do i put the code i need? the update text box was needed to update the progress but without the Form3.status.Text = "" it made a new line with every percent increment
I wrote a simple console program (simplecopy) that copies its input to output:
Module Module1 Sub Main()
[Code]....
The output is the content of testdata.txt, but with three extra characters (hex b4 2b 2b) inserted at the beginning of the output. Those three bytes are not there when I run simplecopy without input redirection.
I have redirected the results of the command prompt to a multi-line textbox and i want to get the line number of the error. [code] how would i get the line numbers? it should get 90,92,95.
I have written a windows service that is meant to launch a notepad when a specific action happens. The problem i have is that even though the service launches notepad, the actual notepad it self is NOT visible. I know that it has been launced because i can see the process in the task manager. By the way the process is listed as a SYSTEM process rather than a process under my user name (i believe that is because my process is a "LocalSystem" one).
Waaaaay back in 2003 I took a course called "Programming with the Microsoft .NET Framework (Microsoft Visual Basic .NET)" Then I attempted for the next year to get approval to take more courses, failed, and eventually gave up. Now, I'm being asked to write applications using VS 2008. I have, of course, forgotten everything I learned 6+ years ago, plus I'm sure things have changed. Plus we still don't have money for me to take any courses. my question to you is: can you recommend a free website, or a book I might find in my local library, that will give me a kick start into writing VB windows applications (database driven) and/or ASP.NET applications (also very database driven). I'm proficient in VB 3, 5, and 6, along with ASP classic using VBScript.... I just have forgotten pretty much everything I once might have known about .NET.
im new to this forum and to VB.NET, however over the next year I think I won't be getting a placement so I want to get as much programming experience as possible. I would basically like to learn VB.NET. Does anyone know a good site to explain its concepts and a compiler for it, which is compatible with a MAC.
Im sorry if you think this is a waste of space for asking but I'd rather download something recommended by people who frequently use VB.NET.
btw any tutorials out there on how to create database with vb.net with mssql just to let me get started, i was hoping for a simple db to practice on like id,name. ive made db with php and mysql but vb.net is a bit far from php and mysql though the concept is the same..
