private void ValidateConnection(string method)
{
if (null == _connection)
{
throw ADP.ConnectionRequired(method);
}
_connection.CheckStateOpen(method);
// user attempting to execute the command while the first dataReader hasn't returned
// use the connection reference collection to see if the dataReader referencing this
// command has been garbage collected or not.
if (_hasDataReader)
{
if (_connection.HasLiveReader(this))
{
throw ADP.OpenReaderExists();
}
_hasDataReader = false;
}
}
