如何从C＃中的Datetime变量中仅获取日期格式 [英] how to get only date format from Datetime variable in C#

问题描述

DateTime fromDate = DateTime.Parse（HttpContext.Current.Session [a]。ToString（））;



DateTime toDate = DateTime.Parse（HttpContext .Current.Session [b]。ToString（））;





我只想在两个变量中都有日期格式，而不是时间。


我的会话变量中的
分别是1/2/2012和5/2/2012的值格式



如果我这样做，



fromDate = fromDate.Date;



它仍然是给出日期和时间格式。

解决方案

 fromDate = fromDate.Date; 

这段代码是正确的，因为DateTime类总是有时间。如果使用.Date函数，则仅通过将时间设置为00:00:00来返回日期。这就够了。仅输出您可能想要使用.ToString方法的不同模式的日期：

http://www.geekzilla.co.uk/View00FF7904-B510-468C-A2C8-F859AA20581F.htm [ ^ ]

看看DateTime.Date [ ^ ] property：



< pre lang =c＃> DateTime dt = DateTime.Now;
DateTime dateOnly = dt.Date;

或者，您可以通过多种方式格式化DateTime：格式化显示的日期时间 - 格式字符串描述 [ ^ ]

.NET日期，时间和日期时间没有区别。这是一个使用问题。

  String  .Format（ < span class =code-string> {0：d / M / yyyy}，fromDate）; 

或

 fromDate.toString（  d / M / yyyy）; 

DateTime fromDate = DateTime.Parse(HttpContext.Current.Session["a"].ToString());

DateTime toDate = DateTime.Parse(HttpContext.Current.Session["b"].ToString());


I only want date format in both the variables, not time.

in my session variable there is value format like 1/2/2012 and 5/2/2012 respectively

if i do as,

fromDate = fromDate.Date;

it still gives both date and time format.

解决方案

fromDate = fromDate.Date;

This code is correct, since the DateTime class always has a time with it. If you use the .Date function it returns only the date by setting the time to 00:00:00. This is enough. For outputting only the date you may want to use the different patterns for the .ToString method:
http://www.geekzilla.co.uk/View00FF7904-B510-468C-A2C8-F859AA20581F.htm[^]

Look at the DateTime.Date[^] property:

DateTime dt = DateTime.Now;
DateTime dateOnly = dt.Date;

Alternatively, you can format a DateTime in many, many ways for display: Formatting a DateTime for display - format string description[^]

.NET is not making difference between Date, Time and Datetime. It is a matter of usage.

String.Format("{0:d/M/yyyy}", fromDate);

or

fromDate.toString("d/M/yyyy");

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