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WPF案例展示

backend 2025/6/21 17:28:56

下拉框的数据绑定

枚举转换成对应的中文

设置数据上下文，设置数据源，设置数据格式转换器

<UserControl.DataContext><ViewModels:SelfViewModelAll />
</UserControl.DataContext>
<UserControl.Resources><Model:SelfModelC x:Key="SelfModelC" d:IsDataSource="True"/><DataTemplate x:Key="EnumItemTemplate"><TextBlock Text="{Binding Converter={StaticResource SelfModelC}}" /></DataTemplate>
</UserControl.Resources>

下拉框的设置：

 <ComboBox Name="ModelChoose" ItemsSource="{Binding ModelList //数据来源（链表）,diagnostics:PresentationTraceSources.TraceLevel=High}" //测试SelectedItem="{Binding SelectedModel, Mode=TwoWay}" //选择的项ItemTemplate="{StaticResource EnumItemTemplate}" //转换器HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="3" Grid.Column="1" Height="25" />

注意ModelList必须为属性，写Get/set方法并且是Public类型，否则会找不到

 public ObservableCollection<SelfModel> ModelList { get;  set ; } = new ObservableCollection<SelfModel>();private SelfModel _selectedModel;public SelfModel SelectedModel{get => _selectedModel;set => SetProperty(ref _selectedModel, value);}public SelfViewModelAll(){// 填充枚举值foreach (SelfModel type in Enum.GetValues(typeof(SelfModel))){ModelList.Add(type);}}

枚举：

 public enum SelfModel : int{A= 0,B,C,}

转换器：必须自己一个文档，否则写路径时找不到

 public class SelfModelC : IValueConverter{public object Convert(object value, Type targetType, object parameter, CultureInfo culture){if (value is SelfModel model){switch (model){case SelfModel.A:return "AA";case SelfModel.C:return "CC";case SelfModel.B:return "BB";default:return string.Empty;}}return string.Empty;}public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture){throw new NotImplementedException();}}

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