用下拉框做了一个按类别查找,可是取不到里面的文本。在xaml页面怎么写ComBox??在ViewModel.cs呢?
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- 雨天里的蘑菇芽 2014-12-24 08:21关注
在XAML文件中的代码:
<Grid x:Name="LayoutRoot" Background="White" DataContext="{Binding Source={StaticResource cb}}"> <StackPanel HorizontalAlignment="Left"> <ComboBox ItemsSource="{Binding Info}" Width="150" SelectedItem="{Binding ComboSelectedItem,Mode=TwoWay}" > <i:Interaction.Triggers> <i:EventTrigger EventName="SelectionChanged"> <si:CallDataMethod Method="ComboBoxSelectionChanged"></si:CallDataMethod> </i:EventTrigger> </i:Interaction.Triggers> <ComboBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding Name}" Tag="{Binding Tag}" ></TextBlock> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> <Button Margin="0 5 0 5" Content="Click" Command="{Binding}"></Button> <TextBlock Margin="0 5 0 5" Name="tb"></TextBlock> </StackPanel> </Grid>
在ViewModel中的代码:
public class ComboBoxTemplateViewModel : ViewModelBase { private ObservableCollection<Student> _Info = new ObservableCollection<Student>(); private Student _ComboSelectedItem = null; public ComboBoxTemplateViewModel() { _Info.Add(new Student() { Name = "ABC1", Tag = "1" }); _Info.Add(new Student() { Name = "ABC2", Tag = "2" }); _Info.Add(new Student() { Name = "ABC3", Tag = "3" }); _Info.Add(new Student() { Name = "ABC4", Tag = "4" }); _Info.Add(new Student() { Name = "ABC5", Tag = "5" }); _Info.Add(new Student() { Name = "ABC6", Tag = "6" }); _ComboSelectedItem = _Info[1]; } public ObservableCollection<Student> Info { get { return _Info; } } public Student ComboSelectedItem { get { return _ComboSelectedItem; } set { _ComboSelectedItem = value; NotifyPropertyChanged("ComboSelectedItem"); } } public ICommand GetSelectedData { get { return new RelayCommand(GetSelectedItemAndDisplayIt); } } private void GetSelectedItemAndDisplayIt() { } public void ComboBoxSelectionChanged() { MessageBox.Show("Item selected is : " + ComboSelectedItem.Name); } }
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