具有系统自定义短日期格式的WPF datagrid日期列

问题描述：

这与使用WPF数据网格的自定义日期格式线程略有不同。

This is slightly different wrinkle to the custom date format threads with WPF datagrids.

我的Win7框有一个自定义的短日期字符串，在控制面板中定义为dd-MM-yy。我希望DataGrid中的日期列使用该设置进行显示。视图模型具有一个称为日期的DateTime。

My Win7 box has a custom short date string defined in the Control Panel as dd-MM-yy. I want a date column in a DataGrid to use that setting for display. The view model has a DateTime called 'Date'.

我尝试了此操作

   <DataGrid AutoGenerateColumns="False" Name="dataCondition" ItemsSource="{Binding}">
    <DataGrid.Columns>
      <DataGridTextColumn Binding="{Binding Name}" ></DataGridTextColumn>
      <DataGridTextColumn Binding="{Binding Date, StringFormat=d}" />
      <DataGridTextColumn Binding="{Binding Comment}"></DataGridTextColumn>
    </DataGrid.Columns>
  </DataGrid>

日期列显示为m / d / yyyy。无论是否自定义，DataGrid都不会使用系统短日期设置吗？

The date column shows up as m/d/yyyy. Doesn't the DataGrid use the system short date setting, irregardless if it's custom or not?

WPF DatePickers的工作方式似乎有所不同。即使没有StringFormat，也可以使用自定义的短日期格式（并且直接绑定到视图模型中的DateTime）。

WPF DatePickers seem to work differently. The custom short date format is used even without a StringFormat (and being bound directly to a DateTime in the view model).

我可以通过以下方法在DataGrid中解决此问题：在视图模型（日期-> DateFormatted）中创建一个字符串属性，在该模型中，getter使用DateTime.ToShortDateString，但是我不确定这是执行此操作的最佳方法。而且我还没有计算出绑定的TwoWay部分...：P

I can get around this problem in the DataGrid by creating a string property in the view model (Date -> DateFormatted) where the getter uses DateTime.ToShortDateString, but I'm not sure this is the best way to do this. And I haven't worked out the binding TwoWay part yet... :P

答

创建一个转换器并在在datetime列绑定。继承IValueConverter的类。接收DateTime并返回一个字符串。

Create a converter and use it in the binding at the datetime column. A class that inherits IValueConverter. Receives a DateTime and returns a String.

具有系统自定义短日期格式的WPF datagrid日期列

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