为全局独立于 CultureInfo 的所有 DateTime 对象设置 StringFormat - WPF

Question

有没有办法在我的 WPF 应用程序中为所有 DateTime 对象全局设置 StringFormat 而独立于 CultureInfo？

我在整个应用程序中使用绑定到此类对象，如下所示：

<DataGridTextColumn Header="Date" Binding="{Binding Date}"/>

而且我想避免必须将 StringFormat 参数添加到每个绑定。我试图像这样覆盖当前的文化 DateTimeFormat 参数：

public void SetDateTimeFormat()
{
    culture = Thread.CurrentThread.CurrentUICulture;
    var newCulture = new CultureInfo(culture.Name);

    // Set desired date format here
    newCulture.DateTimeFormat.ShortDatePattern = "dd/MMM/YYYY";
    newCulture.DateTimeFormat.LongDatePattern = "dd/MMM/YYYY";
    newCulture.DateTimeFormat.ShortTimePattern = "dd/MMM/YYYY";
    newCulture.DateTimeFormat.LongTimePattern = "dd/MMM/YYYY";
    newCulture.DateTimeFormat.FullDateTimePattern = "dd/MMM/YYYY";

    CultureInfo.DefaultThreadCurrentCulture = newCulture;
    CultureInfo.DefaultThreadCurrentUICulture = newCulture;

    Thread.CurrentThread.CurrentCulture = newCulture;
    Thread.CurrentThread.CurrentUICulture = newCulture;

        FrameworkElement.LanguageProperty.OverrideMetadata(
            typeof(FrameworkElement),
            new FrameworkPropertyMetadata(System.Windows.Markup.XmlLanguage.GetLanguage(CultureInfo.CurrentCulture.IetfLanguageTag)));

        var lang = System.Windows.Markup.XmlLanguage.GetLanguage(newCulture.IetfLanguageTag);
        FrameworkContentElement.LanguageProperty.OverrideMetadata(
              typeof(System.Windows.Documents.TextElement),
              new FrameworkPropertyMetadata(lang)
            );
}

但是不行

Answer 1

Is there any way to set the StringFormat for all DateTime objects globally independently of the CultureInfo in my WPF Application

A DateTime 对象没有任何 StringFormat 但 Binding 有。您可以创建自定义 Binding class:

public class MyCustomBinding : Binding
{
    public MyCustomBinding(string path)
        :base(path)
    {
        StringFormat = "yyyy-MM-dd";
    }
}

用法：

<DataGridTextColumn Header="Date" Binding="{local:MyCustomBinding Date}"/>

或者您可以设置元素的 Language 属性:

<DataGrid x:Name="dg" Language="en">

您也可以对 App.xaml.cs:

中的所有元素全局执行此操作

public partial class App : Application
{
    protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);
        var culture = new CultureInfo("en");
        FrameworkElement.LanguageProperty.OverrideMetadata(typeof(FrameworkElement), 
            new FrameworkPropertyMetadata(XmlLanguage.GetLanguage(culture.IetfLanguageTag)));
    }
}

Answer 2

在app.xaml.cs

  public App()
        {            
          
            CultureInfo ci = CultureInfo.CreateSpecificCulture(CultureInfo.CurrentCulture.Name);
            ci.DateTimeFormat.ShortDatePattern = "M/d/yyyy";
            Thread.CurrentThread.CurrentCulture = ci;
        }

为全局独立于 CultureInfo 的所有 DateTime 对象设置 StringFormat - WPF

Setting StringFormat for all DateTime objects globally independent of CultureInfo - WPF

c#

wpf

datetime

datetime-format

cultureinfo