Question

由于某种原因，使用Content="{Binding Time, StringFormat=t}仍然给了我一个很长的日期。支持字段是DateTime属性，用DateTime.Now初始化，但无论我尝试什么字符串格式，它仍显示完整日期......

我只想看到HH：mm tt

有什么想法吗？

XAML：

<Window x:Class="ArgosSystem.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:loc="clr-namespace:ArgosSystem"
        xmlns:sys="clr-namespace:System;assembly=System"
        Title="MainWindow" Height="800" Width="1280" Loaded="Window_Loaded">
    <Window.Resources>
        <DataTemplate DataType="{x:Type loc:Picknote}">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="200" MinWidth="200" />
                    <ColumnDefinition Width="350" />
                    <ColumnDefinition Width="250" />
                    <ColumnDefinition Width="50" />
                </Grid.ColumnDefinitions>
                <Label Content="{Binding Time, StringFormat=t}" VerticalContentAlignment="Center"  Foreground="IndianRed" FontSize="36" Grid.Column="0" />
                <Label Content="{Binding Customer}" VerticalContentAlignment="Center" Foreground="IndianRed" FontSize="36" Grid.Column="1" />
                <Label Content="{Binding PicknoteNo}"  VerticalContentAlignment="Center"  Foreground="IndianRed" FontSize="36" Grid.Column="2" />
                <Label Content="{Binding Qty}"  VerticalContentAlignment="Center"  Foreground="IndianRed" FontSize="36" Grid.Column="3" />
            </Grid>
        </DataTemplate>
    </Window.Resources>
    <Grid Background="Black">
        <DockPanel>
            <ScrollViewer Name="lstPicknoteScroll" VerticalScrollBarVisibility="Auto">
                <ItemsControl Name="lstPicknotes" ItemsSource="{Binding}"  IsTabStop="False" Foreground="Cornsilk" />
            </ScrollViewer>
        </DockPanel>
    </Grid>
</Window>

C＃：

public partial class MainWindow : Window
{
    ObservableCollection<Picknote> picknotes = new ObservableCollection<Picknote>();

    public MainWindow()
    {
        InitializeComponent();
        lstPicknotes.DataContext = picknotes;
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        picknotes.Add(new Picknote
        {
            Time = DateTime.Now,
            Customer = "REED FOR SPEED",
            PicknoteNo = "PKN767677",
            Qty = 100
        });

        picknotes.Add(new Picknote
        {
            Time = DateTime.Now.AddHours(-2),
            Customer = "F1 AUTOMOTIVE",
            PicknoteNo = "PKN767677",
            Qty = 50
        });
        picknotes.Add(new Picknote
        {
            Time = DateTime.Now.AddHours(-1),
            Customer = "FERGUSENS",
            PicknoteNo = "PKN767677",
            Qty = 10
        });
    }
}

Answer 1

StringFormat 适用于string类型的属性。 Content属性的类型为Object，因此您需要使用Label控件的 ContentStringFormat 属性指定格式。

<Label Content="{Binding Time}" ContentStringFormat="t" VerticalContentAlignment="Center"  Foreground="IndianRed" FontSize="36" Grid.Column="0" />

绑定StringFormat给出不正确的结果

1 个答案: