C#中比较两个日期大小的方法

public bool IsBookBeOverdue(DateTime _beTime)
{
bool resultFlg = false;
int compNum = DateTime.Compare(DateTime.Now, _beTime);

        //t1> t2
        if (compNum > 0)
        {
            resultFlg = true;
        }
        else if (compNum == 0)
        {
            //相等
        }
        else
        {
            //DateTime.Now< _beTime
        }
        return resultFlg;
    }