I have the following structure. I need to create a pointer to it for calling
the Windows API. When I try, I get an error. I have found that the String is
the culprit. In the C declaration for this structure, the String is shown as
UNICODE_STRING. Can someone tell me the correct datatype to use for the String
which will allow me to both call the Win API and declare a pointer to this
structure? Thanks.

    [StructLayout(LayoutKind.Sequential)]
    struct OBJECT_TYPE_INFORMATION
    {
        public String TypeName;
        public uint TotalNumberOfObjects;
        public uint TotalNumberOfHandles;
        public uint TotalPagedPoolUsage;
        public uint TotalNonPagedPoolUsage;
        public uint TotalNamePoolUsage;
        public uint TotalHandleTableUsage;
        public uint HighWaterNumberOfObjects;
        public uint HighWaterNumberOfHandles;
        public uint HighWaterPagedPoolUsage;
        public uint HighWaterNonPagedPoolUsage;
        public uint HighWaterNamePoolUsage;
        public uint HighWaterHandleTableUsage;
        public uint InvalidAttributes;
        public GENERIC_MAPPING GenericMapping;
        public uint ValidAccessMask;
        public bool SecurityRequired;
        public bool MaintainHandleCount;
        public uint PoolType;
        public uint DefaultPagedPoolCharge;
        public uint DefaultNonPagedPoolCharge;
    }