Beispiel #1
0
        private Array GetVector <T>() where T : struct
        {
            int count = PropVariantNativeMethods.PropVariantGetElementCount(ref this);

            if (count <= 0)
            {
                return(null);
            }

            Array arr = new T[count];

            for (uint i = 0; i < count; i++)
            {
                if (typeof(T) == typeof(Int16))
                {
                    short val;
                    PropVariantNativeMethods.PropVariantGetInt16Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(UInt16))
                {
                    ushort val;
                    PropVariantNativeMethods.PropVariantGetUInt16Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(Int32))
                {
                    int val;
                    PropVariantNativeMethods.PropVariantGetInt32Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(UInt32))
                {
                    uint val;
                    PropVariantNativeMethods.PropVariantGetUInt32Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(Int64))
                {
                    long val;
                    PropVariantNativeMethods.PropVariantGetInt64Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(UInt64))
                {
                    ulong val;
                    PropVariantNativeMethods.PropVariantGetUInt64Elem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(DateTime))
                {
                    System.Runtime.InteropServices.ComTypes.FILETIME val;
                    PropVariantNativeMethods.PropVariantGetFileTimeElem(ref this, i, out val);

                    long fileTime = FileTimeToDateTime(ref val);


                    arr.SetValue(DateTime.FromFileTime(fileTime), i);
                }
                else if (typeof(T) == typeof(Boolean))
                {
                    bool val;
                    PropVariantNativeMethods.PropVariantGetBooleanElem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(Double))
                {
                    double val;
                    PropVariantNativeMethods.PropVariantGetDoubleElem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
                else if (typeof(T) == typeof(String))
                {
                    string val;
                    PropVariantNativeMethods.PropVariantGetStringElem(ref this, i, out val);
                    arr.SetValue(val, i);
                }
            }

            return(arr);
        }
        private static Dictionary <Type, Action <PropVariant, Array, uint> > GenerateVectorActions()
        {
            Dictionary <Type, Action <PropVariant, Array, uint> > cache = new Dictionary <Type, Action <PropVariant, Array, uint> >();

            cache.Add(typeof(Int16), (pv, array, i) =>
            {
                short val;
                PropVariantNativeMethods.PropVariantGetInt16Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(UInt16), (pv, array, i) =>
            {
                ushort val;
                PropVariantNativeMethods.PropVariantGetUInt16Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(Int32), (pv, array, i) =>
            {
                int val;
                PropVariantNativeMethods.PropVariantGetInt32Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(UInt32), (pv, array, i) =>
            {
                uint val;
                PropVariantNativeMethods.PropVariantGetUInt32Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(Int64), (pv, array, i) =>
            {
                long val;
                PropVariantNativeMethods.PropVariantGetInt64Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(UInt64), (pv, array, i) =>
            {
                ulong val;
                PropVariantNativeMethods.PropVariantGetUInt64Elem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(DateTime), (pv, array, i) =>
            {
                System.Runtime.InteropServices.ComTypes.FILETIME val;
                PropVariantNativeMethods.PropVariantGetFileTimeElem(pv, i, out val);

                long fileTime = GetFileTimeAsLong(ref val);

                array.SetValue(DateTime.FromFileTime(fileTime), i);
            });

            cache.Add(typeof(Boolean), (pv, array, i) =>
            {
                bool val;
                PropVariantNativeMethods.PropVariantGetBooleanElem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(Double), (pv, array, i) =>
            {
                double val;
                PropVariantNativeMethods.PropVariantGetDoubleElem(pv, i, out val);
                array.SetValue(val, i);
            });

            cache.Add(typeof(Single), (pv, array, i) => // float
            {
                float[] val = new float[1];
                Marshal.Copy(pv._ptr2, val, (int)i, 1);
                array.SetValue(val[0], (int)i);
            });

            cache.Add(typeof(Decimal), (pv, array, i) =>
            {
                int[] val = new int[4];
                for (int a = 0; a < val.Length; a++)
                {
                    val[a] = Marshal.ReadInt32(pv._ptr2,
                                               (int)i * sizeof(decimal) + a * sizeof(int)); //index * size + offset quarter
                }
                array.SetValue(new decimal(val), i);
            });

            cache.Add(typeof(String), (pv, array, i) =>
            {
                string val = string.Empty;
                PropVariantNativeMethods.PropVariantGetStringElem(pv, i, ref val);
                array.SetValue(val, i);
            });

            return(cache);
        }