绑定上的 StringFormat [英] StringFormat on Binding

问题描述

查看:

<TextBlock Text="{Binding Date}"/>

我想将日期格式化为dd/MM/yyyy"，换句话说，没有时间.

I want to format the Date to "dd/MM/yyyy", in other words, without the time.

我试过了:<TextBlock Text="{Binding Date, StringFormat={}{0:dd/MM/yyyy}}"/>，但它不起作用.

I tried it: <TextBlock Text="{Binding Date, StringFormat={}{0:dd/MM/yyyy}}"/>, but it doesn't work.

给我一​​个错误:在绑定"类型中找不到属性StringFormat".

Gives me an error: The property 'StringFormat' was not found in type 'Binding'.

推荐答案

最好和最简单的方法是使用转换器，您可以将日期传递给该转换器并返回格式化的字符串.在例如MyNamespace.Converters 命名空间:

The best and the easiest way would be to use a converter to which you pass the Date and get the formatted string back. In e.g. MyNamespace.Converters namespace:

public class DateFormatConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        if (value == null)
            return null;

        DateTime dt = DateTime.Parse(value.ToString());
        return dt.ToString("dd/MM/yyyy");
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}

并在您的 xaml 中引用转换器并添加以下转换器:

And in your xaml just reference the converter and add the following converter:

xmlns:conv="using:MyNamespace.Converters" 

在你的 xaml 页面和 page.resources 中添加这个

in your xaml page and in page.resources add this

<conv:DateFormatConverter x:Name="DateToStringFormatConverter"/>

<TextBlock Text="{Binding Date, Converter={StaticResource DateToStringFormatConverter}"/>

这篇关于绑定上的 StringFormat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！