public static IEnumerable <TEnum> ToEnum <TEnum>(this IPortableDevicePropVariantCollection col) where TEnum : struct // enum
{
uint count = 0;
col.GetCount(ref count);
for (uint i = 0; i < count; i++)
{
PropVariantFacade val = new PropVariantFacade();
col.GetAt(i, ref val.Value);
yield return(GetEnumFromAttrGuid <TEnum>(val.ToGuid()));
}
}
public static IEnumerable <Guid> ToGuid(this IPortableDevicePropVariantCollection col)
{
uint count = 0;
col.GetCount(ref count);
for (uint i = 0; i < count; i++)
{
using (PropVariantFacade val = new PropVariantFacade())
{
col.GetAt(i, ref val.Value);
yield return(val.ToGuid());
}
}
}
public static IEnumerable <KeyValuePair <string, string> > ToKeyValuePair(this IPortableDeviceValues values)
{
uint num = 0;
values?.GetCount(ref num);
for (uint i = 0; i < num; i++)
{
PropertyKey key = new PropertyKey();
using (PropVariantFacade val = new PropVariantFacade())
{
values.GetAt(i, ref key, ref val.Value);
string fieldName = string.Empty;
FieldInfo propField = ComTrace.FindPropertyKeyField(key);
if (propField != null)
{
fieldName = propField.Name;
}
else
{
FieldInfo guidField = ComTrace.FindGuidField(key.fmtid);
if (guidField != null)
{
fieldName = $"{guidField.Name}, {key.pid}";
}
else
{
fieldName = $"{key.fmtid}, {key.pid}";
}
}
string fieldValue = string.Empty;
switch (val.VariantType)
{
case PropVariantType.VT_CLSID:
fieldValue = ComTrace.FindGuidField(val.ToGuid())?.Name ?? val.ToString();
break;
default:
fieldValue = val.ToDebugString();
break;
}
yield return(new KeyValuePair <string, string>(fieldName, fieldValue));
}
}
}
private static void InternalWriteObject(IPortableDeviceValues values)
{
string func = new StackTrace().GetFrame(2).GetMethod().Name;
Trace.WriteLine($"############################### {func}");
uint num = 0;
values.GetCount(ref num);
for (uint i = 0; i < num; i++)
{
PropertyKey key = new PropertyKey();
PropVariantFacade val = new PropVariantFacade();
values.GetAt(i, ref key, ref val.Value);
string fieldName = string.Empty;
FieldInfo propField = FindPropertyKeyField(key);
if (propField != null)
{
fieldName = propField.Name;
}
else
{
FieldInfo guidField = FindGuidField(key.fmtid);
if (guidField != null)
{
fieldName = $"{guidField.Name}, {key.pid}";
}
else
{
fieldName = $"{key.fmtid}, {key.pid}";
}
}
switch (val.VariantType)
{
case PropVariantType.VT_CLSID:
Trace.WriteLine($"##### {fieldName} = {FindGuidField(val.ToGuid())?.Name ?? val.ToString()}");
break;
default:
Trace.WriteLine($"##### {fieldName} = {val.ToDebugString()}");
break;
}
}
}