Pass C++ jintArray to C# function

Question

i have C# dll which has a function

public static Int32[] remDup(Int32[] dArray){
   return dArray.Distinct().toArray();
}

i have jni function for this

JNIEXPORT remDup..... ( jintArray dupArray){
    // from java call i get dupArray
    CsharpDLL::CSharpClass::remDup(/*pass an int32 array */)
}

i have java function which calls below function using jni

  remDup (Int[] array)

i m calling C# DLL from Java using C++ wrapper... i have already spent half of the day to find out to pass jIntArray to C# dll function ... but no success.. with complete R&D as much as i can doo..

differet techniques

i.e array<System::Int32^)^ array, Marshal techniques but still unable to pass array from C++ (JintArray) to C# DLL .. plz help or guide

This may help msdn.microsoft.com/en-us/library/dtbydz1t.aspx — Bogdan
– Bogdan, Commented Apr 6, 2014 at 20:09
@Bogdan thnx dude! BUT its giving following ERROR a value of type "cli::array<int,1>^" cannot be used to initialize an entity of type "cli::array<System::Int32^,1>^ " — Digital Alchemist
– Digital Alchemist, Commented Apr 6, 2014 at 20:14
Sorry, not familiar with jintArray, but worst case solution is to create a new cli::array<int> of the size of your jintArray and then use a for to set all elements to the new array and pass that to c# function ... — Bogdan
– Bogdan, Commented Apr 6, 2014 at 20:16
@Bogdan thanx dude, your link was helpful to me ... if you can properly answer above comment as answer.. i can marked it as answer :) — Digital Alchemist
– Digital Alchemist, Commented Apr 7, 2014 at 11:36
Added as answer, I do not chase points but some may search that question on google and it will be useful to them ;) — Bogdan
– Bogdan, Commented Apr 7, 2014 at 17:48

Bogdan · Accepted Answer · 2014-04-07 17:47:57Z

1

A solution is to create a new cli::array of the size of your jintArray and then use a for to set all elements to the new array and pass that to c# function.

answered Apr 7, 2014 at 17:47

Bogdan

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