Converting unmanaged struct -> CLI value struct

[DaTurk]

I'm having an issue converting an unmanaged struct to a CLI managed
struct. It's a value struct and this cannot be changed.

[StructLayout(La youtKind::Seque ntial, CharSet=CharSet ::Ansi, Pack=1)]
public value struct UpdateItem
{
public:

[MarshalAs(Unman agedType::ByVal TStr, SizeConst=50)]
System::String ^Name;

[MarshalAs(Unman agedType::ByVal TStr, SizeConst=50)]
System::String ^Address;

[MarshalAs(Unman agedType::ByVal TStr, SizeConst=10)]
System::String ^Envelope;

[MarshalAs(Unman agedType::ByVal TStr, SizeConst=30)]
System::String ^Record;

virtual System::String^ ToString() override;
void SetDefaultValue s();
};

But I cannot use

Marshal::PtrToS tructure((IntPt r)&item, UpdateItem_); Because it has
issues apparently with the fact the managed struct is a value type. I
could copy these items manually, but this conversion is going to
happen, quite possible, in excess of 11 times a second, and gcnew'ing
these four managed strings each time is unacceptable. And I know
they're managed, and they will get Garbage Collected; but anyone when
this runs, I promise you the GC isn't running enough for me. The
memory continues to creep up, and up. Any solutions?

THank you in advance.

[Mattias Sjögren]

Re: Converting unmanaged struct -> CLI value struct

>But I cannot use
>
>Marshal::PtrTo Structure((IntP tr)&item, UpdateItem_); Because it has
>issues apparently with the fact the managed struct is a value type.

Use the other PtrToStructure overload.


Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
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