(Duplicate Post, Ignore)how to call functions from unmanaged dll

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hi ,
Please can anyone help me ?
i m trying to call a function say getdevice();
which is present in my unmanaged dll. the function in dll has parameters say
getdevice(char **pDeviceList,int *pDeviceCount, unsigned longulFlags)
actually i m using c# and doing coding in c# as well and my dll is in c++ and whole coding of my application is also in c++ but i want to import my dll and call my functions , I have code to import my dll but dont know how to call the function and what parametrs i have to pass from main()
I dont know while coding in c# the proper datatypes and proper way for the parameters to pass while calling my function present in dll .

Is it possible in c# to pass pointers as parametrs while calling a function present in dll from main()
because as it can be seen above function(getdevice()) has poniters as parameters.
In c# Is there any way to pass pointers through a function to call a function from main()
Aasif Eqbal
aasifaslamy85@gmail.com