public void Refresh()
{
if (this.Count > 0)
{
this.Clear();
}
IPortableDeviceProperties properties = null;
this.content.Properties(out properties);
IPortableDeviceValues values = null;
properties.GetValues(this.objectID, null, out values);
var count = 0U;
values.GetCount(ref count);
var key = new _tagpropertykey();
var propVar = new tag_inner_PROPVARIANT();
for (var i = 0U; i < count; i++)
{
values.GetAt(i, ref key, ref propVar);
this.Add(WpdProperty.Create(key, propVar));
}
}
public static IWpdProperty Create(_tagpropertykey key, tag_inner_PROPVARIANT variant)
{
var ptrValue = Marshal.AllocHGlobal(Marshal.SizeOf(variant));
try
{
Marshal.StructureToPtr(variant, ptrValue, false);
var pv = WpdProperty.MarshalToStructure <PROPVARIANT>(ptrValue);
var ve = (VarEnum)pv.vt;
switch (ve)
{
case VarEnum.VT_I1:
return(new WpdProperty <sbyte>(key, variant, ve, pv.AsSByte()));
case VarEnum.VT_UI1:
return(new WpdProperty <byte>(key, variant, ve, pv.AsByte()));
case VarEnum.VT_I2:
return(new WpdProperty <short>(key, variant, ve, pv.AsInt16()));
case VarEnum.VT_UI2:
return(new WpdProperty <ushort>(key, variant, ve, pv.AsUInt16()));
case VarEnum.VT_I4:
case VarEnum.VT_INT:
case VarEnum.VT_ERROR:
return(new WpdProperty <int>(key, variant, ve, pv.AsInt32()));
case VarEnum.VT_UI4:
case VarEnum.VT_UINT:
return(new WpdProperty <uint>(key, variant, ve, pv.AsUInt32()));
case VarEnum.VT_I8:
return(new WpdProperty <long>(key, variant, ve, pv.AsInt64()));
case VarEnum.VT_UI8:
return(new WpdProperty <ulong>(key, variant, ve, pv.AsUInt64()));
case VarEnum.VT_R4:
return(new WpdProperty <float>(key, variant, ve, pv.AsFloat()));
case VarEnum.VT_R8:
return(new WpdProperty <double>(key, variant, ve, pv.AsDouble()));
case VarEnum.VT_BOOL:
return(new WpdProperty <bool>(key, variant, ve, pv.AsBool()));
case VarEnum.VT_CY:
return(new WpdProperty <decimal>(key, variant, ve, pv.AsDecimal()));
case VarEnum.VT_DATE:
case VarEnum.VT_FILETIME:
return(new WpdProperty <DateTime>(key, variant, ve, pv.AsDateTime()));
case VarEnum.VT_BSTR:
case VarEnum.VT_LPSTR:
case VarEnum.VT_LPWSTR:
return(new WpdProperty <string>(key, variant, ve, pv.AsString()));
case VarEnum.VT_BLOB:
return(new WpdProperty <byte[]>(key, variant, ve, pv.AsByteBuffer()));
case VarEnum.VT_UNKNOWN:
return(new WpdProperty <object>(key, variant, ve, pv.AsIUnknown()));
case VarEnum.VT_DISPATCH:
case VarEnum.VT_PTR:
return(new WpdProperty <IntPtr>(key, variant, ve, pv.AsIntPtr()));
case VarEnum.VT_CLSID:
return(new WpdProperty <Guid>(key, variant, ve, pv.AsGuid()));
case VarEnum.VT_EMPTY:
return(new WpdProperty <object>(key, variant, ve, null));
default:
return(new WpdProperty <object>(key, variant, ve, pv.AsIntPtr()));
}
}
finally
{
Marshal.FreeHGlobal(ptrValue);
}
}
public static IWpdProperty Create(_tagpropertykey key, float variantValue)
{
return(WpdProperty.Create(key, PROPVARIANT.Create_tag_inner_PROPVARIANT(variantValue)));
}