internal static int GetPropertyName(this IPropertyStorage propertyStorage, uint propid, out string name)
{
HRESULT hr = HRESULT.E_FAIL;
name = String.Empty;
uint[] rgpropid = { propid };
string[] rglpwstrName = { String.Empty };
if (NativeMethods.Succeeded(hr = propertyStorage.ReadPropertyNames(1, rgpropid, rglpwstrName)))
{
name = rglpwstrName[0];
}
if (String.IsNullOrWhiteSpace(name))
{
Guid fmtid = propertyStorage.GetFormatId();
if (fmtid.Equals(FormatId.SummaryInformation))
{
name = propertyStorage.GetPropertyName((PIDSI)propid);
hr = HRESULT.S_OK;
}
else if (fmtid.Equals(FormatId.DocSummaryInformation))
{
name = propertyStorage.GetPropertyName((PIDDSI)propid);
hr = HRESULT.S_OK;
}
}
return(hr);
}
internal static int GetPropertyName(this IPropertySetStorage propertySetStorage, Guid fmtid, uint propid, out string name)
{
HRESULT hr = (int)HRESULT.E_FAIL;
name = String.Empty;
IPropertyStorage propertyStorage = null;
uint grfMode = (uint)(STGM.READ | STGM.SHARE_EXCLUSIVE);
try
{
if (NativeMethods.Succeeded(hr = propertySetStorage.Open(ref fmtid, grfMode, out propertyStorage)))
{
hr = propertyStorage.GetPropertyName(propid, out name);
}
}
catch
{
}
finally
{
if (propertyStorage != null)
{
propertyStorage.FinalRelease();
}
}
return(hr);
}
internal static PropertySet FromIPropertyStorage(IPropertyStorage propertyStorage)
{
if (propertyStorage == null)
{
throw new ArgumentNullException("propertyStorage");
}
HRESULT hr = HRESULT.E_FAIL;
PropertySet propertySet = null;
STATPROPSETSTG stat;
propertyStorage.Stat(out stat);
IEnumSTATPROPSTG enumerator = null;
List <Property> properties = new List <Property>();
try
{
if (NativeMethods.Succeeded(hr = propertyStorage.Enum(out enumerator)))
{
STATPROPSTG[] sps = new STATPROPSTG[] { default(STATPROPSTG) };
uint fetched = 0;
while ((enumerator.Next(1, sps, out fetched) == HRESULT.S_OK) && (fetched == 1))
{
string name;
PROPVARIANT propvar = default(PROPVARIANT);
try
{
propertyStorage.GetPropertyName(sps[0].propid, out name);
sps[0].lpwstrName = name;
propertyStorage.GetProperty(sps[0].propid, out propvar);
properties.Add(new Property(sps[0], propvar.Value));
}
catch
{
}
finally
{
propvar.Clear();
}
}
}
}
catch
{
}
finally
{
if (enumerator != null)
{
enumerator.FinalRelease();
}
}
Type type = System.Reflection.Assembly.GetExecutingAssembly().GetPropertySetType(stat.fmtid);
if (type == null)
{
// In this case, we did not find a strongly typed property set.
type = typeof(PropertySet);
}
propertySet = PropertySet.InvokeInternalConstructor(type, stat, properties.ToArray());
propertySet.Name = type.GetPropertySetName();
return(propertySet);
}