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QuestionHow can I download a picture in powershell and display it in C#? Pin
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QuestionRe: How can I download a picture in powershell and display it in C#? Pin
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QuestionIDisposable with COM Pin
hpjchobbes19-May-16 5:13
hpjchobbes19-May-16 5:13 
I have an application that uses a COM object to make a connection to an application. I need to make sure that when my application ends that I call the EndSession and CloseConnection methods of this COM object. I was reading this article: Implementing IDisposable and the Dispose Pattern Properly[^] as I think this is what I would need to do to make sure my closing code always gets called, but it doesn't seem to happen when I stop debugging. The application that I am connecting to still thinks my program is connected. It seems like when I stop debugging (or if I have a program crash, that the Dispose methods don't get called. I also tried to add a Finalizer but that causes a System.Runtime.InteropServices.InvalidComObjectException stating that the COM object that has been separated from it's underlying RCW cannot be used.


C#
private bool disposed;
protected virtual void Dispose(bool disposing)
{
    if (!disposed)
    {
        if (_Session != null) // _Session is the COM object.
        {
            _Session.EndSession();       // These are the COM functions to close and end the 
            _Session.CloseConnection();  // session that must be called, but this is where I
            _Session = null;             // get the InvalidComObjectException.
        }
        disposed = true;
    }
}
public void Dispose()
{
    Dispose(true);
    GC.SuppressFinalize(this);

}
~SessionConnection() // This was added, which seems to be the root cause of the COM exception
{
    Dispose(false);
}


I'm not sure what is the best way to ensure that the EndSession and CloseConnection methods of my COM object get called even if my program crashes or I stop debugging.
AnswerRe: IDisposable with COM Pin
Gerry Schmitz19-May-16 5:35
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AnswerRe: IDisposable with COM Pin
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GeneralRe: IDisposable with COM Pin
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GeneralRe: IDisposable with COM Pin
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GeneralRe: IDisposable with COM Pin
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QuestionEnumResourceLanguages return false for resource type identified by Name Pin
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QuestionDraw 2 lines in a picture box and automatically measure the angle between the line Pin
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QuestionProblems Related to E commerce APIs Pin
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