Using Java-classes with C# [closed] - c#

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I have a project written in Java (>1.5).
Is it possible to write parts of the project with C#?
For instance the GUI and calling the methods and instantiate the classes written in java?
If yes, how?

I am author of jni4net, open source intraprocess bridge between JVM and CLR. It's build on top of JNI and PInvoke. No C/C++ code needed. I hope it will help you.

Not without something like ikvm - or using web services etc to communicate between the two sides. Basically it's likely to be much more work than either rewriting your existing project code in C# or writing the GUI in Java.

There is something called Java Language Conversion Assistant for .NET. You can convert your Java classes to c# and start coding.
There is also something called JNBridge (not free).

It seems like my solution is very limited. and apply only to specific version of java.
I probably will stay with old good C :) Can't imagine how to work without shared libraries :)
This document explain how to create a dll from java and use it in C code. I'm not C# or java expert but i'm sure that you can load external dll's in C# as well. So not a complete solution but good starting point, IMHO.
Generally dll it's a perfect way to mixing languages.

In simple way you can pack your java classes to jar file then
In C# use Process class for execute and map IO stream

I did some research on this a few years ago (2005 I believe) and I liked JNBridgePro as the best third party product to do this. Check it out here http://www.jnbridge.com/
Good luck!

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Blender with C# instead of Python [closed]

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Like you can see in the title I want to know if it's possible to use C# or any other language instead of Python for Blender.
from blender.org:
The scripting interface is only for Python. If you are interested in
digging in the source code, then you may have some usage for C++ too.
The main source is coded in C, but as I know C++ is used in some parts
of Game Engine. You can download the source code from Blender's
homepage, and see if you can follow it. (Personally I do not.)
There are some interesting closely related projects coded in C++, if I
remember right, MakeHuman is one such. This may be the environment
most interesting for you if you want to keep using C++.
Blender supports many fileformats for importing and exporting models.
Some of them can be utilized in your own projects, as I know, quite
easily by C++. In this case you would use Blender for modelling your
meshes and C++ for writing your own interface utilising your models.
Yet still, be open for new ideas. C++ is quite oldfashioned
programming language, complex, not very readable. That's the main
reason why people today prefer Python.
So your answer is no. there might be a support for c++ (the source code indicates so) but no support for C#.

Can I know how the language interoperability works in .NET with the help of example? [closed]

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I was reading about the .NET framework and I read that ".NET provides language interoperability", and I also read the answer to the question What is language interoperability (basic concept) in .net framework?, but I don't have any idea about how to use this feature practically.
Create a simple project using C#, make a simple class and compile it. You will generate a .dll.
Then create a project using VB and import/include the one you compiled where you used C#. VB won´t take care of your C# code, but it can manage the class you created.
How? Because .NET is compiled in a common language. Does not matter if you have used C# or VB to generate the code.
Interoperability is a framework feature. Is rare that you need make use of this for small projects so I undestand you don't find a real way to carry out. But it is that simple as all what you do with C# in .NET you can reuse if you decide code in VB in the future or for some parts of a project.
In practice programmers decide to code in one language. But reusability is already there.
Feel free to ask what you need.
https://stackoverflow.com/a/43417187/7733724

Using a C library in .NET web application [closed]

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I have the source code for a C library that I need to use with my C# ASP.Net application. It sounds like the way to handle this would be to create a C++ dll wrapper and DLLImport that into my C# project. I have found this to be kind of ugly as far as when it throws an exception the entire application crashes. Is this the best way to accomplish this, or is there a safer way? I am trying to do some research on how I might be able to make a COM object with the C library, but haven't really found much there. Is it possible to make a COM object and reference it as .NET managed code?
I googled my way around this. I found this great article comparing
a C# facade using with PInvoke and a lot of marshalling
a Facade into the interop layer in C++/CLI and compiling in mixed mode for consumption by C#.
Also, this MSDN citation : C++ Interop is recommended over explicit PInvoke because it provides better type safety, is typically less tedious to implement, is more forgiving if the unmanaged API is modified, and makes performance enhancements possible that are not possible with explicit PInvoke.
Also your idea(C++ COM facade) seems legit as preached by the good book with 2 advantages:
The resulting classes can be used from languages other than Visual C++.
The details of the COM interface can be hidden from the managed client code. .NET data types can be used in place of native types, and the details of data marshaling can be performed transparently inside the custom runtime callable wrappers.

C# and C++ code in same .NET application? [closed]

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I'm supposed to work with Open CV, which can be programmed in C++ and deploy it in a .NET graphic interface application. I'd really like to work with C # for the interface traits.
What's the best approach for this?
I know of two ways that C# and C++ can be used in the same application.
The simplest way works where the components to be written in C++ and C# can be separated such that one component relies on the other, but they are not mutually dependent. In this case just create two assemblies, one in C# and one in VC++, and reference one from the other. This is the simplest way to do it, not least because it is supported in the UI of Visual Studio.
However, that approach will not work if there is a mutual dependency, ie, class A needs to know about class B and class B needs to know about class A, where class A is to be written in C++ and class B is to be written in C#. It is still possible to write the classes in different languages like that, using a lesser known feature of .NET called multi-file assemblies, or netmodules.
See How to: Build a Multifile Assembly and Multifile Assemblies for instructions. It is useful to remember that the C++ compiler is generally more clever than the others. I seem to remember the procedure was to get C# to compile its half to a NetModule, then pass that to the C++ compiler and linker which was capable of linking it to the C++ parts and creating the final assembly.
An alternative approach, if you only intend to write a small amount of C# code, would be to learn the VC++ syntax for the .NET features you want to use and avoid C# altogether. VC++ can declare managed interfaces and types just like C# can, and if you will not be writing much actual code in C# then this might be easier.

Making UI for console application [closed]

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How can I make an interface for console applications to make them look like edit.com under Microsoft's operating systems. Target languages are C, C++ and C#.NET.
Have a look at curses:
e.g.:
http://sourceforge.net/projects/curses-sharp/
That would be based on a very simple framework which writes directly to the video to draw the underlying shadows, drop down menus, etc, not alone that, since 'Edit.com` would be written in assembler for speed in relation to drawing, this is quite ancient by today's standards, you can however take a look at PDCurses which will enable you to do this kind of thing.
The neat beauty is, PDCurses is compatible with the unix equivalent of Curses.
But, really, today, it is all about GUI and Windows....
What kind of application are you trying to do?
IIRC, from my old days, there was an object orientated framework for this using TurboVision, which has a port available with open source now, see this wikipedia entry on this TurboVision.
Today, console applications are either old DOS applications emulated more and less in Windows, or command-line interpreters.
Anyway, if you really want to do an editor, use the System.Console class in the System NameSpace and use the SetCursorPosition method to write what you want where you want
The edit.com window you are showing appear to be developed with Turbo Vision, an old console gui library written by Borland many years ago.
Borland put the software in public domain and release its C++ sources. There is also a porting to Pascal, developed by the community, called Free Vision.
Unfortunately ,I don't think there is a porting or a wrapper to dot.net, so you have to write your own. Or, at least, you can look at the sources to get inspired...

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