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Questions tagged [interop]

Interoperability is a requirement for one computer system or programming language to work with another.

Interoperability is a requirement for one computer system or programming language to work with another.

A number of computer systems, especially Microsoft's .NET Framework, reduce this term to Interop.

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Turn a simple C# DLL into a COM interop component

How do I make a C# DLL into a COM interop DLL that can be consumed by a VB6 application?
Elena Lawrence
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Git as mercurial client? Why no git-hg?

This is a question that's been bothering me for a while. I've done my homework and checked stackoverflow and found at least these two topics about my question: Git for Mercurial like git-svn and Git interoperability with a Mercurial repository I've…
Kai Inkinen
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How to use Microsoft.Office.Interop.Excel on a machine without installed MS Office?

I'm writing an application which works with excel files. I need a feature to delete a sheet. I have to use an assembly Microsoft.Office.Interop.Excel.dll. It's running fine on developer machine but when I try to deploy it on server I'm getting an…
John Wales
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Exception from HRESULT: 0x800A03EC Error

I am getting "HRESULT: 0x800A03EC" error when running Excel add-in with following code: Excel.Range rng = ActiveSheet.Cells[x, y] as Excel.Range; string before = rng.Value2; string cleanV =…
Daniil Shevelev
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Excel Interop - Efficiency and performance

I was wondering what I could do to improve the performance of Excel automation, as it can be quite slow if you have a lot going on in the worksheet... Here's a few I found myself: ExcelApp.ScreenUpdating = false -- turn off the redrawing of the…
Vincent Van Den Berghe
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What is the interop dll?

I need some clarification. I have a Reportwriter dll that uses Crystal Reports. It is written in VB6. I have to add this dll to my asp.net project, where it creates an interop dll. To my understanding, the interop dll is there as an intermediary so…
Prabu
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Using a C++ class member function as a C callback function

I have a C library that needs a callback function to be registered to customize some processing. Type of the callback function is int a(int *, int *). I am writing C++ code similar to the following and try to register a C++ class function as the…
Methos
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How to access static inner Java class via Clojure interop?

Basically what I need to do is this FileChannel.MapMode.READ_ONLY I tried doing the obvious (.. FileChannel MapMode READ_ONLY) but that ends up throwing an exception java.lang.NoSuchFieldException: MapMode even the / notation specified as for…
Jakub Arnold
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COM object that has been separated from its underlying RCW cannot be used

I am trying to use the OpcRcw.da.dll. If I interop this dll inside a test console project everything works, but if I build dll project to do my interop gymnastic and ref my library into my console project I am getting this error: COM object that…
kevin marchand
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Use a .jar java library API in C#?

I'm an entry level programmer so please be descriptive in your responses. I am trying to use a Java API given as a .jar file in my C# .net application. I don't know much Java, but this .jar file says "no main-class manifest attribute" when I try to…
timmyg
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Calling C# code from C++

I need to be able to invoke arbitrary C# functions from C++. http://www.infoq.com/articles/in-process-java-net-integration suggests using ICLRRuntimeHost::ExecuteInDefaultAppDomain() but this only allows me to invoke methods having this format: int…
Gili
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Write Array to Excel Range

I'm currently trying to write data from an array of objects to a range in Excel using the following code, where objData is just an array of strings: private object m = System.Type.Missing; object[] objData = getDataIWantToWrite(); Range…
Jon Artus
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Calling a C# library from python

Anyone can share a working example on how to call a simple C# library (actually its WPF) from python code? (I have tried using IronPython and had too much trouble with unsupported CPython library my python code is using so I thought of trying the…
ychuri
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COM object that has been separated from its underlying RCW cannot be used

I have some COM component which I call from some c# dll. I also have a winforms app that uses that .dll. When I close the app I get this exception: COM object that has been separated from its underlying RCW cannot be used. The stack trace…
Yaron Naveh
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IntPtr, SafeHandle and HandleRef - Explained

Without pointing me to MSDN, could someone give a concise, clear explanation of the purpose of each of these and when to use them. (IntPtr, SafeHandle and HandleRef)
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