Converting DoubleArray To IntPtr and then to Byte Array

Hi,

I have requirement to convert double array to IntPtr and this IntPtr to byte array.

I want to do the reversal also just confirm values stored in byte array is of correct int array.

The steps I am following is

double[] dmanagedArray = new double[length];

for (int intI = 0; intI < dmanagedArray.Length; intI++)

{

dmanagedArray[intI] = intI * 10;

}

int size = Marshal.SizeOf(dmanagedArray[0]) * dmanagedArray.Length;

IntPtr srcPtr1 = Marshal.AllocHGlobal(size);

// This will copy double array to IntPtr.

Marshal.Copy(dmanagedArray, 0, srcPtr1, dmanagedArray.Length);

// Now let's convert this IntPtr to byte array

byte[] byteArray = new byte[dmanagedArray.Length]

//Marshal.Copy(srcPtr1, byteArray, 0, byteArray.Length);

In my case what is happening is , byte[] now contains all the values as 0.

which I think is wrong. How to do right conversion.

Hi,

I think direct conversion of double array to byte array will always result in 0 this way.

Because you need a byte[] to hold value of one "double" variable.

So if you need to store value of doulbe[] then you will need two dimentional byte array i.e. byte[][].

Also, you will need another double array to hold intermediate result as direct conversion of double[] to byte[][] is not possible.

See following code which I modified from your code:

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