internal static DBPropSet CreateProperty(Guid propertySet, int propertyId, bool required, object value)
{
ItagDBPROP dbprop = OleDbStructHelpers.CreateTagDbProp(propertyId, required, value);
DBPropSet propertyset = new DBPropSet(1);
propertyset.SetPropertySet(0, propertySet, new ItagDBPROP[1] {
dbprop
});
return(propertyset);
}
internal Dictionary <string, OleDbPropertyInfo> GetValues()
{
Dictionary <string, OleDbPropertyInfo> propertyLookup = null;
bool mustRelease = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
DangerousAddRef(ref mustRelease);
if (ADP.PtrZero != this.handle)
{
propertyLookup = new Dictionary <string, OleDbPropertyInfo>(StringComparer.OrdinalIgnoreCase);
IntPtr setPtr = this.handle;
ItagDBPROPINFO propinfo = OleDbStructHelpers.CreateTagDbPropInfo();
tagDBPROPINFOSET propinfoset = new tagDBPROPINFOSET();
for (int i = 0; i < setCount; ++i, setPtr = ADP.IntPtrOffset(setPtr, ODB.SizeOf_tagDBPROPINFOSET))
{
Marshal.PtrToStructure(setPtr, propinfoset);
int infoCount = propinfoset.cPropertyInfos;
IntPtr infoPtr = propinfoset.rgPropertyInfos;
for (int k = 0; k < infoCount; ++k, infoPtr = ADP.IntPtrOffset(infoPtr, ODB.SizeOf_tagDBPROPINFO))
{
Marshal.PtrToStructure(infoPtr, propinfo);
OleDbPropertyInfo propertyInfo = new OleDbPropertyInfo();
propertyInfo._propertySet = propinfoset.guidPropertySet;
propertyInfo._propertyID = propinfo.dwPropertyID;
propertyInfo._flags = propinfo.dwFlags;
propertyInfo._vtype = propinfo.vtType;
propertyInfo._supportedValues = propinfo.vValue;
propertyInfo._description = propinfo.pwszDescription;
propertyInfo._lowercase = propinfo.pwszDescription.ToLowerInvariant();
propertyInfo._type = PropertyInfoSet.FromVtType(propinfo.vtType);
propertyLookup[propertyInfo._lowercase] = propertyInfo;
}
}
}
}
finally
{
if (mustRelease)
{
DangerousRelease();
}
}
return(propertyLookup);
}
internal ItagDBPROP[] GetPropertySet(int index, out Guid propertyset)
{
if ((index < 0) || (PropertySetCount <= index))
{
if (lastErrorFromProvider != null)
{
// add extra error information for CSS/stress troubleshooting.
// We need to keep same exception type to avoid breaking change with Orcas RTM/SP1.
throw ADP.InternalError(ADP.InternalErrorCode.InvalidBuffer, lastErrorFromProvider);
}
else
{
throw ADP.InternalError(ADP.InternalErrorCode.InvalidBuffer);
}
}
tagDBPROPSET propset = new tagDBPROPSET();
ItagDBPROP[] properties = null;
bool mustRelease = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
DangerousAddRef(ref mustRelease);
IntPtr propertySetPtr = ADP.IntPtrOffset(DangerousGetHandle(), index * ODB.SizeOf_tagDBPROPSET);
Marshal.PtrToStructure(propertySetPtr, propset);
propertyset = propset.guidPropertySet;
properties = new ItagDBPROP[propset.cProperties];
for (int i = 0; i < properties.Length; ++i)
{
properties[i] = OleDbStructHelpers.CreateTagDbProp();
IntPtr ptr = ADP.IntPtrOffset(propset.rgProperties, i * ODB.SizeOf_tagDBPROP);
Marshal.PtrToStructure(ptr, properties[i]);
}
}
finally
{
if (mustRelease)
{
DangerousRelease();
}
}
return(properties);
}
