日期时间选择器 C# 格式
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/13711358/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
DateTime picker C# format
提问by TAM
I have a DateTimepicker to add arrival time to a list, I have 2 questions about it:
我有一个DateTime选择器可以将到达时间添加到列表中，我有两个问题：
- How can I get it to show dates like
12-Jan-2012Instead of12/01/12? - How can I get it to show the time after the date but not the current time, as thats what is shows atm.
- 我怎样才能让它显示像
12-Jan-2012而不是这样的日期12/01/12？ - 我怎样才能让它显示日期之后的时间而不是当前时间，因为这就是显示 atm 的内容。
My current code is not very advanced its just:
我当前的代码不是很先进，它只是：
theVisit.ArrivalTime = DateTimePicker1.Value
回答by Peter Gluck
Something like this will display the date and time:
像这样的东西将显示日期和时间：
DateTimePicker1.Value.ToString("d-MMM-yyyy hh:mm:ss");
To override the default DateTimePicker settings, you can do this:
要覆盖默认的 DateTimePicker 设置，您可以执行以下操作：
DateTimePicker1.Format = DateTimePickerFormat.Custom;
DateTimePicker1.CustomFormat = "d-MMM-yyyy hh:mm:ss";
You can show a different time by modifying the format string, e.g.:
您可以通过修改格式字符串来显示不同的时间，例如：
DateTimePicker1.CustomFormat = "d-MMM-yyyy 12:00:00";
or even
甚至
DateTime otherTime = DateTime.Now;
DateTimePicker1.CustomFormat = "d-MMM-yyyy " + otherTime.ToString("hh:mm:ss");
回答by Jason Higgins
You're looking for DateTime Format strings. There's a great article on them on MSDN. There's two types:
您正在寻找日期时间格式字符串。MSDN 上有一篇关于它们的很棒的文章。有两种类型：
You can use these to construct the datetime to look how you want it to. For your example, you would use :
您可以使用这些来构建日期时间以查看您想要的样子。对于您的示例，您将使用：
DateTimePicker1.Value.ToString("dd-MMM-yyyy hh:mm:ss")
回答by sa_ddam213
For it to show in that format in the picker, set the properties below
要在选择器中以该格式显示，请设置以下属性
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "dd-MMM-yyyy hh:mm:ss";
回答by JYelton
First, to alter how your DateTimePicker displays DateTimes:
首先，要改变 DateTimePicker 显示日期时间的方式：
DateTimePicker1.CustomFormat = "d-MMM-yyyy hh:mm:ss";
DateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
Your code:
您的代码：
theVisit.ArrivalTime = DateTimePicker1.Value;
Would not change, because the DateTimePicker1.Valueisn't any different, it's just displayed according to your format.
不会改变，因为DateTimePicker1.Value没有任何不同，它只是根据您的格式显示。
If you want the control to display a specific time (not the current time), you have to give the control that value:
如果您希望控件显示特定时间（而不是当前时间），则必须为控件提供该值：
DateTimePicker1.Value = new DateTime(2012, 12, 21, 23, 59, 59);
Otherwise it will display the current time as of the form creation.
否则，它将显示表单创建时的当前时间。
回答by Jpabs
You may check datetimepickerlike this to check if it is empty.
您可以这样检查datetimepicker以检查它是否为空。
if(DatTimePicker1.Text.Equals(" "))
{
MessageBox.Show("DateTimePicker is empty");
}
