Add offset to IntPtr

Question

I\'m looking for a way to perform pointer operations in C# or .NET in particular.

I want to do something very simple

Having a pointer IntPtr I want to get I

Answer 1

For pointer arithmetic in C# you should use proper pointers inside an unsafe context:

class PointerArithmetic
{
    unsafe static void Main() 
    {
        int* memory = stackalloc int[30];
        long* difference;
        int* p1 = &memory[4];
        int* p2 = &memory[10];

        difference = (long*)(p2 - p1);

        System.Console.WriteLine("The difference is: {0}", (long)difference);
    }
}

The IntPtr type is for passing around handles or pointers and also for marshalling to languages that support pointers. But it's not for pointer arithmetic.