求助：两个字符串比较的问题（C#比较）

Question

有两个时间的字符串 如
string intime="2011-12-23 11:54:23";
string outtime="2011-12-22 15:36:05";
怎么对这两个字符串进行大小比较，如果比较出来之后outtime<intime 则需要在outtime的日的基础上加1

Answer 1

if(Convert.ToDateTime(outtime) < Convert.ToDateTime(intime))
{
   Convert.ToDateTime(outtime).AddDays(1);
}

Answer 2

string intime = "2011-12-23 11:54:23";
string outtime = "2011-12-22 15:36:05";
if (DateTime.Parse(outtime).CompareTo(DateTime.Parse(intime)) < 0)
outtime = DateTime.Parse(outtime).AddDays(1.0).ToString();
Response.Write(outtime);

Answer 3

            string intime = "2011-12-23 11:54:23";
            string outtime = "2011-12-22 15:36:05";
            DateTime dt1 = DateTime.Parse(intime);
            DateTime dt2 = DateTime.Parse(outtime);
            if (dt1.CompareTo(dt2) > 0)
            {
                DateTime dt3 = dt2.AddDays(1);
                MessageBox.Show(dt3.ToString());
            }

Answer 4

if(Convert.ToDateTime(outtime) < Convert.ToDateTime(intime))
{
   Convert.ToDateTime(outtime).AddDays(1);
}

Answer 5

if(Convert.ToDateTime(outtime) < Convert.ToDateTime(intime))
{
   Convert.ToDateTime(outtime).AddDays(1);
}

Answer 6

http://msdn.microsoft.com/zh-cn/library/system.datetime.compareto(v=VS.80).aspx

Answer 7

            DateTime dt1 = DateTime.Parse("2011-12-23 11:54:23");
            DateTime dt2 = DateTime.Parse("2011-12-22 15:36:05");
            if (dt1.CompareTo(dt2) > 0)
            {
            }TimeSpan ts=dt2-dt1;

Answer 8

DateTime indt,outdt;
            string intime = "2011-12-23 11:54:23";
            string outtime = "2011-12-22 15:36:05";
            if (DateTime.TryParse(intime, out indt) == true && DateTime.TryParse(outtime, out outdt) == true)
            {
                if (outdt < indt)
                {
                    outdt = outdt.AddDays(1);
                    outtime = outdt.ToString();
                }
            }

Answer 9

string intime = "2011-12-23 11:54:23";
string outtime = "2011-12-22 15:36:05";
if (DateTime.Parse(outtime).CompareTo(DateTime.Parse(intime)) < 0)
outtime = DateTime.Parse(outtime).AddDays(1.0).ToString();
Response.Write(outtime);这个是正确的

Answer 10

if(Convert.ToDateTime(intime )<Convert.ToDateTime(outtime))
{
    Convert.ToDateTime(outtime).AddDays(1);
}

Answer 11

上面的都对，转成datatime类型可以直接用><=等操作符直接比较