两个值之间的比较 [英] comparison between two values

问题描述

我有一个变量；即类型为DateTime&的oDateTime.我从中提取了一个时间，如下所示:

I have a variable; i.e. oDateTime with the type of DateTime & I extracted a time from it as follows:

string.Format("{0:t}", oDateTime); 

现在我的输出是4:00 AM

我的下拉列表控件的值，例如小时为01,02 ..... 12，分钟和分钟为01,02 ... 59. AM，PM用于FormatDropdown控件.

现在，这里的按钮单击事件将检索值&将在控件中将这些值显示为选定值，如下所示:

Now my output is 4:00AM

My dropdownlist controls having the values like 01,02.....12 for Hours and 01,02...59 for Minutes & AM,PM for FormatDropdown control.

Now here on button click event it will retrieve the values & will show those values in controls as selected value as follows:

ddlTFHrs.SelectedValue = String.Format("{0:hh}", oDateTime);

ddlTFMin.SelectedValue = String.Format("{0:mm}", oDateTime);

ddlTFAMPM.SelectedValue = String.Format("{0:tt}", oDateTime);

当我尝试将04与4进行比较时，出现错误.

我可以将时间格式设置为字符串格式为04，还是可以用其他方法比较这两个值?

谢谢

Here I am getting an error when I try to compare 04 with 4.

Can I format the time in string format as 04 or else is there any alternate way to compare these two values?

Thanks

推荐答案

不要将其转换为字符串-总是很麻烦.
而是使用 http://msdn.microsoft.com/en-us/library/system .datetime.timeofday.aspx [ ^ ]

Don''t convert it to a string - that is always a pain.
Instead, use http://msdn.microsoft.com/en-us/library/system.datetime.timeofday.aspx[^]

TimeSpan timeOnly = DateTime.Now.TimeOfDay;

然后，您可以直接将其与您的时间进行比较.

You can then compare this with your time of day directly.

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