C# ??? ?? ??? C/C ??? ??? ????? ??

C#? C/C ?? ?? ???? ???? ??? ?? ??? ??? ??? ????. ? ????? ???? ??? ??? ???? ?? ?? ??? C# ???? ???? ???? ????? ????.

??? ?? ??? ??? ?? ?? ??

C#? ??? ???? C/C ??? ????? ?? ???? ??? ?? ??? ????.

1. C# ??? ?? ??: C/C ??? ????? ????? C# ???? ????. [StructLayout] ? [FieldOffset]? ?? ??? ???? ??? ??, ?? ? ?? ???? ???? ?????.

2. ??? ??: GCHandle? ???? ??? ??? ???? ?? ?? ???? ?? ??? ???? ?? ????? ?? ?????.

3. ?? ??? ???: Marshal.PtrToStructure? ???? ??? ??? ??? ??? C# ???? ?? ??????. ?? ?? ??? ?? ??? ??? ?????.

4. ??? ??: ?????, ???? ??? ? ??? ??? ????? handle.Free()? ???? ??? ???? ?????.

??: C?? C# ???? ??

C ???(OldStuff)? ?? ???? C# ???(NewStuff)? ??? ?????.

C ???:

typedef struct OldStuff {
    CHAR Name[8];
    UInt32 User;
    CHAR Location[8];
    UInt32 TimeStamp;
    UInt32 Sequence;
    CHAR Tracking[16];
    CHAR Filler[12];
} OldStuff;

C# ???:

[StructLayout(LayoutKind.Explicit, Size = 56, Pack = 1)]
public struct NewStuff
{
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
    [FieldOffset(0)]
    public string Name;

    [MarshalAs(UnmanagedType.U4)]
    [FieldOffset(8)]
    public uint User;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
    [FieldOffset(12)]
    public string Location;

    [MarshalAs(UnmanagedType.U4)]
    [FieldOffset(20)]
    public uint TimeStamp;

    [MarshalAs(UnmanagedType.U4)]
    [FieldOffset(24)]
    public uint Sequence;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
    [FieldOffset(28)]
    public string Tracking;

    // Filler is omitted in C# as it's not needed for data access.
}

?? C# ???? ??? ?? ?? ??? ?????.

public NewStuff ByteArrayToNewStuff(byte[] bytes)
{
    GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
    try
    {
        return (NewStuff)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(NewStuff));
    }
    finally
    {
        handle.Free();
    }
}

?? ???

BinaryReader? ??? ???? ??, Marshal.PtrToStructure? ????? ?? ?? ????? ???? ??? ??? ?? ????? ??? ??? ?????. ??? ???? ?? ??? ??? ?????? ?? ?????.

??? ??? ???? ???? C# ??? ??? ??? C/C ??? ??? ????? ????? ?? ??? ? ????.

? ??? C#? ??? ???? C/C ??? ??? ????? ?? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!