private int GetAdjustedParameterNameMaxLength()
{
int maxPrefixLength = Math.Max(
(null != _isNullPrefix ? _isNullPrefix.Length : 0),
(null != _originalPrefix ? _originalPrefix.Length : 0)
) + _dbCommandBuilder.GetParameterName("").Length;
return _dbCommandBuilder.ParameterNameMaxLength - maxPrefixLength;
}