WPF ComboBox 下拉框绑定 Binding
2021/8/12 23:09:29
本文主要是介绍WPF ComboBox 下拉框绑定 Binding,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
XAML:
<Window.DataContext> <local:VMTempTest/> </Window.DataContext> <Grid> <StackPanel Margin="10,20,10,20" > <DockPanel x:Name="Combbox" Margin="0 10 0 0" > <StackPanel DockPanel.Dock="Left"> <ComboBox Width="200" HorizontalAlignment="Left" ItemsSource="{Binding CombboxList}" SelectedItem="{Binding CombboxItem}" DisplayMemberPath="Text" SelectedValuePath="Key" ></ComboBox> </StackPanel> <StackPanel DockPanel.Dock="Right" Orientation="Horizontal" VerticalAlignment="Center" Margin="20 0 0 0" DataContext="{Binding CombboxItem}" > <TextBlock Text="{Binding Key,StringFormat='结果:\{0\}'}" Margin="0,0,15,0" ></TextBlock> <TextBlock Text="{Binding Text}"></TextBlock> </StackPanel> </DockPanel> </StackPanel> </Grid>
Model:
public class ComplexInfoModel : ObservableObject { private String key; /// <summary> /// Key值 /// </summary> public String Key { get { return key; } set { key = value; RaisePropertyChanged(() => Key); } } private String text; /// <summary> /// Text值 /// </summary> public String Text { get { return text; } set { text = value; RaisePropertyChanged(() => Text); } } }
ViewModel:
public class VMTempTest : ViewModelBase { public VMTempTest() { CombboxList = new ObservableCollection<ComplexInfoModel>() { new ComplexInfoModel(){ Key="1",Text="苹果" }, new ComplexInfoModel(){ Key="2",Text="香蕉" }, new ComplexInfoModel(){ Key="3",Text="梨" }, new ComplexInfoModel(){ Key="4",Text="樱桃" }, }; combboxItem = CombboxList[0]; // 默认选中第一个 } private ComplexInfoModel combboxItem; /// <summary> /// 下拉框选中信息 /// </summary> public ComplexInfoModel CombboxItem { get { return combboxItem; } set { combboxItem = value; RaisePropertyChanged(() => CombboxItem); } } private ObservableCollection<ComplexInfoModel> combboxList; /// <summary> /// 下拉框列表 /// </summary> public ObservableCollection<ComplexInfoModel> CombboxList { get { return combboxList; } set { combboxList = value; RaisePropertyChanged(() => CombboxList); } } }
参考:
https://www.cnblogs.com/wzh2010/p/6425060.html
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