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/// <summary>
/// 比较两个日期大小 /// </summary> /// <param name="dateStr1">日期1</param> /// <param name="dateStr2">日期2</param> /// <param name="msg">返回信息</param> public void CompanyDate(string dateStr1, string dateStr2,ref string msg) { //将日期字符串转换为日期对象 DateTime t1 = Convert.ToDateTime(dateStr1); DateTime t2 = Convert.ToDateTime(dateStr2); //通过DateTIme.Compare()进行比较() int compNum = DateTime.Compare(t1, t2);//t1> t2
if (compNum > 0) { msg = "t1:(" + dateStr1 + ")大于" + "t2(" + dateStr2 + ")"; } //t1= t2 if (compNum == 0) { msg = "t1:(" + dateStr1 + ")等于" + "t2(" + dateStr2 + ")"; } //t1< t2 if (compNum < 0) { msg = "t1:(" + dateStr1 + ")小于" + "t2(" + dateStr2 + ")"; } }日期相减
DateTime startTime = Convert.ToDateTime("2017-1-9");
DateTime endTime = Convert.ToDateTime("2017-2-19"); TimeSpan ts = endTime - startTime; int days = ts.Days; days: 间隔的天数。转载地址:http://rltdf.baihongyu.com/