我尝试了以下示例,但没有运气:
http://msdn.microsoft.com/en-us/library/system.windows.data.ivalueconverter%28v=VS.95%29.aspx
我也尝试过这样做:
Formatting a date in XAML on WP7
我无法让它发挥作用。当我尝试添加引用时,例如:
<namespace:dateTimeConverter x:Key="MyDateTimeToStringConverter"/>
或
<src:DateConverter x:Key="dateConverter"/>
我不确定我做错了什么。任何帮助表示赞赏!
这是我的课程代码:
using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Data;
using System.Globalization;
namespace OilChangeApplication
{
public class dateTimeConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
DateTime date = (DateTime)value;
return date.ToShortDateString();
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
string strValue = value as string;
DateTime resultDateTime;
if (DateTime.TryParse(strValue, out resultDateTime))
{
return resultDateTime;
}
return DependencyProperty.UnsetValue;
}
}
}
这是我的Windows手机格式xaml:
<phone:PhoneApplicationPage
x:Class="OilChangeApplication.historyInfo"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d" d:DesignHeight="696" d:DesignWidth="480"
shell:SystemTray.IsVisible="True">
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.Resources>
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="Change your Oil Application 2.0" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="history" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<ListBox Grid.Row="1">
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<ListBox Height="601" HorizontalAlignment="Left" Margin="-3,2,0,0" Name="lbHistory" VerticalAlignment="Top" Width="460" ItemsSource="{Binding historyItemsCollection}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel x:Name="DataTemplateStackPanel" Orientation="Horizontal">
<TextBlock FontFamily="Segoe WP Semibold" FontWeight="Bold" FontSize="30" VerticalAlignment="Top" Margin="20,10">*</TextBlock>
<StackPanel>
<TextBlock x:Name="ItemText" Text="{Binding VehicleName}" FontSize="{StaticResource PhoneFontSizeLarge}"/>
<StackPanel Orientation="Horizontal"
HorizontalAlignment="Center"
VerticalAlignment="Center">
<!--<TextBlock x:Name="ocDate" Text="{Binding OilChangedDate}"></TextBlock>-->
<TextBlock Text="{Binding OilChangedDate, Converter={StaticResource dateTimeConverter},ConverterParameter=\{0:M\}}" />
<TextBlock x:Name="ocOdometer" Text="{Binding OilChangedOdometer}" FontSize="{StaticResource PhoneFontSizeNormal}"/>
</StackPanel>
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</ListBox>
</Grid>
<!--Sample code showing usage of ApplicationBar-->
<phone:PhoneApplicationPage.ApplicationBar>
<shell:ApplicationBar IsVisible="True" IsMenuEnabled="True">
<shell:ApplicationBarIconButton IconUri="/Images/check.png" Text="save" x:Name="btnSave" Click="btnSave_Click"/>
<shell:ApplicationBarIconButton IconUri="/Images/cancel.png" Text="cancel" x:Name="btnCancel" Click="btnCancel_Click"/>
</shell:ApplicationBar>
</phone:PhoneApplicationPage.ApplicationBar>
</phone:PhoneApplicationPage>
答案 0 :(得分:3)
我在转换器方面遇到了一些麻烦,发现一个简单的方法就是在你绑定的类上有另一个属性,称为DisplayDate。
例如,如果你绑定了OilChangedDate,你可以将这个属性添加到你绑定的类中:
public string OilChangedDisplayDate
{
get { return OilChangedDate.ToShortDateString(); }
}
然后直接绑定此属性而不是日期。