Converting Unmanaged array Struct to Managed One

[Charming12]

Hi All,

The question is regarding Unmanaged and Managed code conversion in C# for structures.

I have two structures like:

public struct Detail
{
public int age;
public string address;

public Detail(int _age, string _address)
{
age = _age;
address = _address;
}
}

public struct Name
{
public Detail[] names;
}


While passing the code to StructureToPtr function:

Name some = new Name();

some.names[0].age = 23;
some.names[0].address = "123,ABC Farms";

int Size = Marshal.SizeOf(some);
IntPtr data = Marchal.AllocHGlobal(Size);
Marshal.StructureToPtr(some, data, true);

This code is showing error as Parameters are not correct, and if i tried to pass the same code without using array, it worked perfectly.

Can anyone please suggest me what should i try to resolve the problem.

[Banfa]

Name some = new Name();

some.names[0].age = 23;
some.names[0].address = "123,ABC Farms";

int Size = Marshal.SizeOf(some);
IntPtr data = Marchal.AllocHGlobal(Size);
Marshal.StructureToPtr(some, data, true);

This code is showing error as Parameters are not correct, and if i tried to pass the same code without using array, it worked perfectly.

This would be expected when you don't use an array some is an object, when you do use an array some is an array of objects, since StructureToPtr takes an object handle as its first parameter if can not cope with the array. Even if it did it would be marshalling the array object not the objects in the array.

I would guess you will need to marshal each object in the array individually.

If you have not already check the MSDN function reference for this function.