public static string GetNameFromGuid(_tagpropertykey key, tag_inner_PROPVARIANT values)
{
var pValues = (IPortableDeviceValues) new PortableDeviceValuesClass();
string contentTypeName;
pValues.SetValue(ref key, ref values);
pValues.GetStringValue(ref key, out contentTypeName);
return(contentTypeName);
}
public static PropVariant FromValue(PROPVARIANT value)
{
IntPtr ptrValue = Marshal.AllocHGlobal(Marshal.SizeOf(value));
Marshal.StructureToPtr(value, ptrValue, false);
//
// Marshal the pointer into our C# object
//
return((PropVariant)Marshal.PtrToStructure(ptrValue, typeof(PropVariant)));
}
protected static void StringToPropVariant(
string value,
out tag_inner_PROPVARIANT propvarValue)
{
IPortableDeviceValues pValues =
(IPortableDeviceValues)
new PortableDeviceValuesClass();
pValues.SetStringValue(ref PortableDevicePKeys.WPD_OBJECT_ID, value);
pValues.GetValue(ref PortableDevicePKeys.WPD_OBJECT_ID, out propvarValue);
}
public static bool HasKeyValue(this IPortableDeviceValues values, PropertyKey findKey)
{
uint num = 0;
values?.GetCount(ref num);
for (uint i = 0; i < num; i++)
{
PropertyKey key = new PropertyKey();
PROPVARIANT val = new PROPVARIANT();
values.GetAt(i, ref key, ref val);
if (key.fmtid == findKey.fmtid && key.pid == findKey.pid)
{
PropVariant pval = val;
return(pval.variantType != VarType.VT_ERROR);
}
}
return(false);
}
public void Delete(PortableDevice portableDevice)
{
if (portableDevice == null || !portableDevice.IsConnected)
{
throw new ArgumentNullException(nameof(portableDevice));
}
var variant = new tag_inner_PROPVARIANT();
StringToPropVariant(Id, out variant);
IPortableDevicePropVariantCollection objectIds =
new PortableDevicePropVariantCollection()
as IPortableDevicePropVariantCollection;
objectIds.Add(variant);
portableDevice.Content.Delete(0, objectIds, null);
}
public static string GetNameFromGuid(_tagpropertykey key, tag_inner_PROPVARIANT values)
{
var pValues = (IPortableDeviceValues) new PortableDeviceValuesClass();
string contentTypeName;
pValues.SetValue(ref key, ref values);
pValues.GetStringValue(ref key, out contentTypeName);
return contentTypeName;
}
