[英]WP8 ListPicker Bind
當我通過item source將我的數據綁定到ListPicker
:
C#:
var sightingTypes = SightingTypes.List;
sightingTypesPicker.ItemsSource = sightingTypes;
XML:
<toolkit:ListPicker x:Name="sightingTypesPicker" ItemsSource="{Binding sightingTypes, ElementName=this}">
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
</toolkit:ListPicker>
我可以看到List在ListPicker中顯示,但是,當我點擊ListPicker時,它顯示了對象類型的列表,如下所示:
MyProject.Model.SightingType
MyProject.Model.SightingType
MyProject.Model.SightingType
MyProject.Model.SightingType
MyProject.Model.SightingType
MyProject.Model.SightingType
我如何:
答:列表顯示時顯示Name
屬性
B:將ID
屬性綁定為值但不顯示它
您需要為其分配FullModeItemTemplate
:
<toolkit:ListPicker x:Name="sightingTypesPicker" ItemsSource="{Binding sightingTypes, ElementName=this}">
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
<TextBlock Text="{Binding SomeOtherProp}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
編輯 :回答您的問題B:您可以使用SelectedItem DependencyProperty來獲取所選對象的實例:
使用MVVM方法:
<toolkit:ListPicker x:Name="sightingTypesPicker"
ItemsSource="{Binding SightingTypes}"
SelectedItem="{Binding SelectedSigntingType, Mode=TwoWay}">
使用代碼隱藏方法:
sightingTypesPicker.SelectionChanged += (s, e) => {
MessageBox.Show(((SightingType)e.AddedItems[0]).ID);
};
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