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If I were you, I'd start by downloading JulMar's ATAPI[^] source. This wraps the unmanaged TAPI 2.x functionality. Then it's a simple matter of hooking into the TE_CALLINFOCHANGE event in the Tapi class.
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Hi all,
I've a strange problem on my app.
I have one app that works fine and uses this instruction:
<pre lang="c#"> xlWorkbook = excelApp.Workbooks.Open();
</pre>
This works fine and all is ok.
The problem occurs when I run the .exe from another program, I execute (Process myProcess = Process.Start(myProcessInfo);) and the program start correctly, but crash on the instruction xlWorkbook = excelApp.Workbooks.Open();.
Is very strange because if I run the .exe via command line all works fine... The app that execute the other one run with administrator privileges...
Someone can help me?
Thank you very much!
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Is the app used to start your .exe a .Net application? If so, are the framework versions the same? Different framework versions can cause strange effects.
Does the app run from a non-local disk? If so, security mechanisms may cause trouble.
Furthermore, when you call a .exe from some other program, it inherits the environment variables of that other program - also check here for differences.
And of course, different users (administrator vs. "normal" user is equivalent to different users) have different environments.
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Thank you for you reply.
Yes, both have been developed by .Net and the freamework is the same (4.0).
Both running on the local disk.
The two application doesn't need to share any variables, the "runner" application reads from DB and executes the associate app with specified (on db) parameters.
The "runner" can starts the other one without problem, the app start fine and does some actions, but when call the instruction xlWorkbook = excelApp.Workbooks.Open(); crash reporting an exception that the file (specified in the function) is in use or doesn't exists, but I checked, the file exists, is readable and works fine, in fact if I run the app via command line all works fine...
Is very strange...
Any idea?
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Devis Meroni wrote: rash reporting an exception that the file (specified in the function) is in use or doesn't exists,
Do you have the file open in Excel? If yes, then it's in use. Open the task-manager; is there a child-process of your application that did not terminate after debugging? If yes, then it's in use.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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No... and the problem is only when I run the .exe from the launcher.
The problem is not in the code, if is a code problem I would have the same problem when I run it from console, instead if I run from console all works fine...
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Devis Meroni wrote: The problem is not in the code, if is a code problem I would have the same problem when I run it from console
That's not guaranteed; as the first answer already noted, there could be subtle differences in the environment.
Devis Meroni wrote: instead if I run from console all works fine..
Did you check whether there was another process in memory? 
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
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The runner app is a Windows Service, is not very easy to debug.
How I can check if there is other process in memory during the run phase?
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A windows service does not run under the users credentials by default. Meaning that it is NOT the same as being run from a console. A windows service has to run before the user logs on, and they usually run under a system account.
Run "Windows.MSC" to open up the services, locate your service, open the context-menu, choose properties, second tab-page called "Log On".
That does not explain who or what is locking your file. It "must" be opened somewhere.
Devis Meroni wrote: How I can check if there is other process in memory during the run phase?
Task Manager.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
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My service run as administrator.
But I still not understand, if the file are really open by other process, why if I run the app via command line it works fine?
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Devis Meroni wrote: But I still not understand, if the file are really open by other process, why if I run the app via command line it works fine?
If you run from the command line, you're running under your own credentials, not as a service. Their behaviour will not be equal. As said before, different environments, probably even different work-directories.
Add in some logging, write the path to the file to a logfile.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
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Are you doing this on a server. May be because there is no desktop cannot run Excel. I know that I worked on a project where had to use ExcelWritter to create Excel spreadsheets.
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If I run the app via command line it works...
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Have you tried logging on as the administrative user the service is running under and starting the program from console there? If this works, than the most likely problem is a different current directory (System.Environment.CurrentDirectory).
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i want to make a crystal report that it takes as a parameter for example, the user choose 3 months.
the user can choose more that one months..
How can i put something that the user can choose a range of months
in parameters of crystal report in visual studio 2010( i use c# for my whole project)
thanks
modified 10-Apr-13 10:09am.
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DON'T SHOUT. Using all capitals is considered shouting on the internet, and rude (using all lower case is considered childish). Use proper capitalisation if you want to be taken seriously.
Now, edit your question, and try again in a civilised manner.
The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)
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i am sorry i didn't know the meaning of writing capital letters ..
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See here: Wiki: Netiquette[^]
The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)
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i want to make a crystal report that it takes as a parameter for example, the user choose 3 months.
the user can choose more that one months..
How can i put something that the user can choose a range of months
in parameters of crystal report in visual studio 2010( i use c# for my whole project)
thanks
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One options would be to allow setting a "from/start" date, and a number of months as a regular integer parameter, e.g. from a textfield or combo box. Then in your C# code create a date range as:
public DateTime CalculateEndDateOfRange(DateTime startdate, uint months)
{
DateTime endtime = startdate.AddMonths(months);
return endtime;
}
Check as similar question here...
http://stackoverflow.com/questions/4454271/date-range-in-days-c[^]
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What is the purpose of using the "protected" access modifier ?
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protected means that the current class and any class derived from it can call that method/property. That's a basic question which you really should have been able to answer by looking at the documentation.
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Actually, you want to keep the method/property/member variable private. But when you need to access it from a derived class, so you change that to protected. Other classes which do not derive from the original class still cannot see it.
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I have a windows form project that I started before installing the SharpGL extension.
The SharpGL library works fine if I create a SharpGL project. But when I try to add a SharpGL control in my project, it says that it cannot find the namespace "OpenGLControl". Having in mind that I added all the references, it's kind of strange, but it's true.
When I type SharpGL.OpenGLControl, it doesn't appear in the autocomplete.
How can I add an OpenGLControl without starting my project from scracth?
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