internal static extern void InitPropVariantFromDoubleVector([In, Out] double[] prgn, uint cElems, out PropVariant ppropvar);
internal static extern void InitPropVariantFromFileTimeVector([In, Out] System.Runtime.InteropServices.ComTypes.FILETIME[] prgft, uint cElems, out PropVariant ppropvar);
internal static extern void InitPropVariantFromInt32Vector([In, Out] Int32[] prgn, uint cElems, out PropVariant ppropvar);
internal static extern void InitPropVariantFromUInt64Vector([In, Out] UInt64[] prgn, uint cElems, out PropVariant ppropvar);
private void CopyData(PropVariant propVar)
{
this.valueType = propVar.valueType;
this.valueData = propVar.valueData;
this.valueDataExt = propVar.valueDataExt;
}
internal static extern void InitPropVariantFromBooleanVector([In, Out] bool[] prgf, uint cElems, out PropVariant ppropvar);
internal static extern void PropVariantGetDoubleElem([In] ref PropVariant propVar, [In] uint iElem, [Out] out double pnVal);
[DllImport("Ole32.dll", PreserveSig = false)] // returns hresult
internal extern static void PropVariantClear([In, Out] ref PropVariant pvar);
internal static extern void PropVariantGetInt32Elem([In] ref PropVariant propVar, [In] uint iElem, [Out] out int pnVal);
internal static extern void PropVariantGetUInt64Elem([In] ref PropVariant propVar, [In] uint iElem, [Out] out UInt64 pnVal);
internal static extern void PropVariantGetBooleanElem([In] ref PropVariant propVar, [In] uint iElem, [Out, MarshalAs(UnmanagedType.Bool)] out bool pfVal);
internal static extern int PropVariantGetElementCount([In] ref PropVariant propVar);
internal static extern uint InitPropVariantFromFileTime([In] ref System.Runtime.InteropServices.ComTypes.FILETIME pftIn, out PropVariant ppropvar);
internal static extern void InitPropVariantFromStringVector([In, Out] string[] prgsz, uint cElems, out PropVariant ppropvar);
internal static extern void PropVariantGetFileTimeElem([In] ref PropVariant propVar, [In] uint iElem, [Out, MarshalAs(UnmanagedType.Struct)] out System.Runtime.InteropServices.ComTypes.FILETIME pftVal);
/// <summary>
/// Creates a PropVariant from an object
/// </summary>
/// <param name="value">The object containing the data.</param>
/// <returns>An initialized PropVariant</returns>
public static PropVariant FromObject(object value)
{
PropVariant propVar = new PropVariant();
if (value == null)
{
propVar.Clear();
return(propVar);
}
if (value.GetType() == typeof(string))
{
//Strings require special consideration, because they cannot be empty as well
if (String.IsNullOrEmpty(value as string) || String.IsNullOrEmpty((value as string).Trim()))
{
throw new ArgumentException("String argument cannot be null or empty.");
}
propVar.SetString(value as string);
}
else if (value.GetType() == typeof(bool?))
{
propVar.SetBool((value as bool?).Value);
}
else if (value.GetType() == typeof(bool))
{
propVar.SetBool((bool)value);
}
else if (value.GetType() == typeof(byte?))
{
propVar.SetByte((value as byte?).Value);
}
else if (value.GetType() == typeof(byte))
{
propVar.SetByte((byte)value);
}
else if (value.GetType() == typeof(sbyte?))
{
propVar.SetSByte((value as sbyte?).Value);
}
else if (value.GetType() == typeof(sbyte))
{
propVar.SetSByte((sbyte)value);
}
else if (value.GetType() == typeof(short?))
{
propVar.SetShort((value as short?).Value);
}
else if (value.GetType() == typeof(short))
{
propVar.SetShort((short)value);
}
else if (value.GetType() == typeof(ushort?))
{
propVar.SetUShort((value as ushort?).Value);
}
else if (value.GetType() == typeof(ushort))
{
propVar.SetUShort((ushort)value);
}
else if (value.GetType() == typeof(int?))
{
propVar.SetInt((value as int?).Value);
}
else if (value.GetType() == typeof(int))
{
propVar.SetInt((int)value);
}
else if (value.GetType() == typeof(uint?))
{
propVar.SetUInt((value as uint?).Value);
}
else if (value.GetType() == typeof(uint))
{
propVar.SetUInt((uint)value);
}
else if (value.GetType() == typeof(long?))
{
propVar.SetLong((value as long?).Value);
}
else if (value.GetType() == typeof(long))
{
propVar.SetLong((long)value);
}
else if (value.GetType() == typeof(ulong?))
{
propVar.SetULong((value as ulong?).Value);
}
else if (value.GetType() == typeof(ulong))
{
propVar.SetULong((ulong)value);
}
else if (value.GetType() == typeof(double?))
{
propVar.SetDouble((value as double?).Value);
}
else if (value.GetType() == typeof(double))
{
propVar.SetDouble((double)value);
}
else if (value.GetType() == typeof(decimal?))
{
propVar.SetDecimal((value as decimal?).Value);
}
else if (value.GetType() == typeof(decimal))
{
propVar.SetDecimal((decimal)value);
}
else if (value.GetType() == typeof(DateTime?))
{
propVar.SetDateTime((value as DateTime?).Value);
}
else if (value.GetType() == typeof(DateTime))
{
propVar.SetDateTime((DateTime)value);
}
else if (value.GetType() == typeof(string[]))
{
propVar.SetStringVector((value as string[]));
}
else if (value.GetType() == typeof(short[]))
{
propVar.SetShortVector((value as short[]));
}
else if (value.GetType() == typeof(ushort[]))
{
propVar.SetUShortVector((value as ushort[]));
}
else if (value.GetType() == typeof(int[]))
{
propVar.SetIntVector((value as int[]));
}
else if (value.GetType() == typeof(uint[]))
{
propVar.SetUIntVector((value as uint[]));
}
else if (value.GetType() == typeof(long[]))
{
propVar.SetLongVector((value as long[]));
}
else if (value.GetType() == typeof(ulong[]))
{
propVar.SetULongVector((value as ulong[]));
}
else if (value.GetType() == typeof(DateTime[]))
{
propVar.SetDateTimeVector((value as DateTime[]));
}
else if (value.GetType() == typeof(bool[]))
{
propVar.SetBoolVector((value as bool[]));
}
else
{
throw new ArgumentException("This Value type is not supported.");
}
return(propVar);
}
internal static extern void PropVariantGetStringElem([In] ref PropVariant propVar, [In] uint iElem, [Out, MarshalAs(UnmanagedType.LPWStr)] out string ppszVal);
[DllImport("Ole32.dll", PreserveSig = false)] // returns hresult
internal extern static void PropVariantCopy([Out] out PropVariant pDst, [In] ref PropVariant pSrc);
internal static extern int InitPropVariantFromPropVariantVectorElem([In] ref PropVariant propvarIn, uint iElem, [Out] out PropVariant ppropvar);
