internal object GetPropertyValue(Guid propertySet, int propertyID)
{
if (null != _icommandText)
{
OleDbHResult hr;
tagDBPROP[] dbprops;
UnsafeNativeMethods.ICommandProperties icommandProperties = ICommandProperties();
using (PropertyIDSet propidset = new PropertyIDSet(propertySet, propertyID))
{
using (DBPropSet propset = new DBPropSet(icommandProperties, propidset, out hr))
{
if (hr < 0)
{
// OLEDB Data Reader masks provider specific errors by raising "Internal Data Provider error 30."
// DBPropSet c-tor will register the exception and it will be raised at GetPropertySet call in case of failure
SafeNativeMethods.Wrapper.ClearErrorInfo();
}
dbprops = propset.GetPropertySet(0, out propertySet);
}
}
if (OleDbPropertyStatus.Ok == dbprops[0].dwStatus)
{
return(dbprops[0].vValue);
}
return(dbprops[0].dwStatus);
}
return(OleDbPropertyStatus.NotSupported);
}
internal DBPropSet(UnsafeNativeMethods.ICommandProperties properties, PropertyIDSet propidset, out OleDbHResult hr) : this()
{
int cPropertyIDSets = 0;
if (propidset != null)
{
cPropertyIDSets = propidset.Count;
}
Bid.Trace("<oledb.ICommandProperties.GetProperties|API|OLEDB>\n");
hr = properties.GetProperties(cPropertyIDSets, propidset, out this.propertySetCount, out this.handle);
Bid.Trace("<oledb.ICommandProperties.GetProperties|API|OLEDB|RET> %08X{HRESULT}\n", hr);
if (hr < OleDbHResult.S_OK)
{
this.SetLastErrorInfo(hr);
}
}
private bool PropertiesOnCommand(bool throwNotSupported)
{
if (null != _icommandText)
{
return(true);
}
Debug.Assert(!_isPrepared, "null command isPrepared");
OleDbConnection connection = _connection;
if (null == connection)
{
connection.CheckStateOpen(ODB.Properties);
}
if (!_trackingForClose)
{
_trackingForClose = true;
connection.AddWeakReference(this, OleDbReferenceCollection.CommandTag);
}
_icommandText = connection.ICommandText();
if (null == _icommandText)
{
if (throwNotSupported || HasParameters())
{
throw ODB.CommandTextNotSupported(connection.Provider, null);
}
return(false);
}
using (DBPropSet propSet = CommandPropertySets())
{
if (null != propSet)
{
UnsafeNativeMethods.ICommandProperties icommandProperties = ICommandProperties();
OleDbHResult hr = icommandProperties.SetProperties(propSet.PropertySetCount, propSet);
if (hr < 0)
{
SafeNativeMethods.Wrapper.ClearErrorInfo();
}
}
}
return(true);
}
internal DBPropSet(UnsafeNativeMethods.ICommandProperties properties, PropertyIDSet propidset, out OleDbHResult hr) : this()
{
Debug.Assert(null != properties, "null ICommandProperties");
int propidsetcount = 0;
if (null != propidset)
{
propidsetcount = propidset.Count;
}
hr = properties.GetProperties(propidsetcount, propidset, out this.propertySetCount, out base.handle);
if (hr < 0)
{
// remember the last HRESULT. Note we do not want to raise exception now to avoid breaking change from Orcas RTM/SP1
SetLastErrorInfo(hr);
}
}
