private bool InitializeCommand(CommandBehavior behavior, bool throwifnotsupported)
{
Debug.Assert(null != _connection, "InitializeCommand: null OleDbConnection");
int changeid = _changeID;
if ((0 != (CommandBehavior.KeyInfo & (this.commandBehavior ^ behavior))) || (_lastChangeID != changeid))
{
CloseInternalParameters(); // could optimize out
CloseInternalCommand();
}
this.commandBehavior = behavior;
changeid = _changeID;
if (!PropertiesOnCommand(false))
{
return(false);
}
if ((null != _dbBindings) && _dbBindings.AreParameterBindingsInvalid(_parameters))
{
CloseInternalParameters();
}
// if we already having bindings - don't create the accessor
// if _parameters is null - no parameters exist - don't create the collection
// do we actually have parameters since the collection exists
if ((null == _dbBindings) && HasParameters())
{
// if we setup the parameters before setting cmdtxt then named parameters can happen
CreateAccessor();
}
if (_lastChangeID != changeid)
{
OleDbHResult hr;
string commandText = ExpandCommandText();
hr = _icommandText.SetCommandText(ref ODB.DBGUID_DEFAULT, commandText);
if (hr < 0)
{
ProcessResults(hr);
}
}
_lastChangeID = changeid;
return(true);
}
