如何以不同的格式显示DatePicker [英] How to Display DatePicker in different format

问题描述

嗨Firends，



我不熟悉WPF，所以需要一些关于使用WPF的DatePicker控件的帮助。



我得到一个XML文档，其中一个字段是Date字段，如下所示：

Hi Firends,

I am not conversant with WPF so need some help about using DatePicker control of WPF.

I am getting an XML document in which one of the field is Date field as below:

<Students>
    <Student>
        <Name>John</Name>
        <DateOfBirth>1990-12-05</DateOfBirth>
    </Student>
    <Student>
        <Name>Mike</Name>
        <DateOfBirth>1980-05-09</DateOfBirth>
    </Student>
</Students>

日期始终采用yyyy-MM-dd格式。但我需要以dd / MM / yyyy格式在DatePicker中显示日期。此外，当用户从DatePicker编辑日期时，我需要以相同的格式将日期保存在XML中，即yyyy-MM-dd。



请让我知道怎么做。



问候

Aseem

The date always comes in the format "yyyy-MM-dd". But I need to display the date in DatePicker in format "dd/MM/yyyy". Also when user edit the date from DatePicker, I need to save the date back in the XML in the same format i.e. "yyyy-MM-dd".

Please let me know how to do that.

Regards
Aseem

推荐答案

最好的想法是让学生班级有Name和DateOfBirth属性。然后在你的XAML中，你需要做的就是将DatePicker绑定到DOB属性并像这样设置StringFormat

The best idea is to have a student class with Name and DateOfBirth Properties. Then in your XAML, all you need to do is bind the DatePicker to the DOB property and set the StringFormat like this

<DatePicker SelectedDate="{Binding Path=DateOfBirth,StringFormat='dd/MM/yyy'}" />

然后你可以在Student类或Data Access类中使用Save方法以正确的格式保存DOB属性。

Then you could have a Save method in your Student class or Data Access class that saves the DOB property in the correct format.

格式化字符串以便保存XML：

To format the string for saving in XML:

String.Format("{0:yyyy-MM-dd}", dt);  

您应该可以通过更新文化来覆盖默认格式：

You should be able to override your default format by updating the culture:

CultureInfo ci = CultureInfo.CreateSpecificCulture(CultureInfo.CurrentCulture.Name); ci.DateTimeFormat.ShortDatePattern = "yyyy-MM-dd"; 
Thread.CurrentThread.CurrentCulture = ci; 

然后每当你输出shortdate时它应该是正确的格式

Then whenever you output shortdate it should be the right format

dt.ToShortDateString();

设置文化信息应该允许您直接从字符串中获取日期：

Setting the culture information should allow you to get date directly from the string:

var x = DateTime.Parse("2000-12-30");

您应该可以通过更新文化来覆盖默认格式：

You should be able to override your default format by updating the culture:

CultureInfo ci = CultureInfo.CreateSpecificCulture(CultureInfo.CurrentCulture.Name);
ci.DateTimeFormat.ShortTimePattern = "HH.mm";
Thread.CurrentThread.CurrentCulture = ci;

然后每当你输出shortdate时它应该是正确的格式

Then whenever you output shortdate it should be the right format

这篇关于如何以不同的格式显示DatePicker的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！