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Questions tagged [unmanagedresources]

67 questions
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C# objects not going out of scope and crashing the system

I have run into a strange situation where when I reassign an object variable to a new instance eventually over several iterations I appear to run out of memory. I get the error: An unhandled exception of type "System.ComponentModel.Win32Exception"…
S Rich
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Using `SafeHandle` for a C API, that includes reference counting

I am working on Python interop. Internally, Python keeps reference counters for all objects via Py_IncRef and Py_DecRef. I want to ensure proper finalization of pointers to Python objects, so I am trying to create a class PyHandle derived from…
LOST
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Effectively release unmanaged resources when process is killed

I have multiple processes (or rather multiple instances of a process) trying to (create or) access a single memory-mapped-file. I'm using Mutex to synchronize (first) creation of mmap file. When all the processes run the first time, it works well…
ambuj
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Dotnet not calling its finalizer even if the object goes out of scope. How to release unmanaged resources then?

I tried with the following code [DllImport("Core.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)] public static extern IntPtr CreateNode(); [DllImport("Core.dll", CharSet = CharSet.Ansi, CallingConvention =…
S.Frank Richarrd
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MVC 5 referencing unmanaged dll

I am struggling with an issue and am utterly lost as to the correct approach to handle the problem. I have an MVC 5 application running on Windows Server 2008 R2 that communicates with an accounting package (Exchequer) via an unmanaged COM dll. As I…
Nick Adkinson
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How to handle exception created by an unmanaged code block

In my code i am running an exe file through a process call. How to handle exception generated by the exe file. Can someone please help.
Deviprasad Das
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Ways of holding an unmanaged resource for the lifetime of the session

Most implementations i've seen containing unmanaged resources end within a method's scope. I'm looking for ways to hold such a resource indefinitely and dispose it as the program stops running. An example of a resource which would quite possibly…
Samuel Jenks
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How to release all resources for a process?

I am running a process, which is creating a file and using that file. After the end of that process, i am deleting that file. If some exception arises in between then how to know that the file is released by the process or not and how to delete it…
Deviprasad Das
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C++/CLI array of unmanaged type passed as pointer

My question carries forward the issue from cli/C++ how to define cli::array with unmanaged type element? I understand that to create a managed array with an unmanaged type, I need to supply its pointer so. array^ args=gcnew…
Krishter
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ADODB objects are unmanaged resource?

I create ADODB recordset, command etc in my winform app and was wondering if I should implement IDisposable on their wrapper classes to free them. Are they unmanaged resources? And to release any unmanaged resource, should call the…
nishitha nair
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How to find out if the object a handle pointing to is already disposed in C#?

I have been working on the codes to safely and efficiently dispose unmanaged objects in C#. This is a Bitmap object created with an image. I like to track the handle to find out the status of image in memory before and after calling Dispose(). Is…
Eric
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Memory Leaks while calling C++ dll from C#

I have a C++ dll that I am calling from C# code. the dll takes in couple params and returns an int.. C++ code. extern "C" __declspec(dllexport) int DoSomething(char* input1, char* buffer) { gss_buffer_desc token; std::string encodedTokenStr…
Rasm
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Reading resources from an un-managed dll with C#

I've written a command-line tool in C# which swaps out a resource in a .resources file for an alternative one. It uses ResourceReader and ResourceWriter. I'd like to do the same thing for dll files, but I can't find a way of doing this. I tried…
El Presidente
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Asp.net c# File is used by another process

i am using Programming language C# asp.net 4.0. I have a situation where i upload an excel. Save it on hard drive using code then using SqlBulkCopy i dump all the content of this excel in to database. the code is working fine. Problem arises if…
Learner
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GetManifestResourceStream: EXE inside a DLL

First place, I embedded into my C# project an unmanaged EXE (pdftotext.exe, actually). I wrote a method to call it using the traditional: Assembly assembly = Assembly.GetExecutingAssembly(); Stream stream =…
argledhel
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