C#

Chona1171 wrote:

You see you still have to configure the endpoint address the client has to look
for, and as I have a pretty general piece of software here, i want end users to
be able to install it on their business network without having to answer
millions of support calls.

static void Main(string[] args)
{
    double[] testArr = new double[] { 1.0, 2.0, 3.0 };

    for (int i = 0; i < 3; i++)
        Console.WriteLine(testArr[i]);

    test(ref testArr[0]);

    for (int i = 0; i < 3; i++)
        Console.WriteLine(testArr[i]);
}

public static unsafe void test(ref double x)
{
    fixed (double* ptr = &x)
    {
        ptr[1] = 2.5;
    }
}

1
2
3
1
2.5
3

double[] pdXVals = new double[] { 1, 2, 3 };
double[] pdYVals = new double[] { 4, 5, 6 };
GCHandle handleX = GCHandle.Alloc(pdXVals, GCHandleType.Pinned);
GCHandle handleY = GCHandle.Alloc(pdYVals, GCHandleType.Pinned);
// change your wrapper function to GCHandle pdXVals, GCHandle pdYVals
// and pass handleX, handleY

// alternatively, the function can take an IntPtr and you can pass handleX.AddrOfPinnedObject() etc
            
// Important! after function call, when done with the handles
handleX.Free();
handleY.Free();