PersonVM.cs
public class MainWindowVM { public MainWindowVM() { PersonList = new ObservableCollection<Person>(Employees); } private Person[] Employees = new Person[] { new Person { ID = 1,Name = "Adam" },new Person { ID = 2,Name = "Bill" },new Person { ID = 10,Name = "Charlie" },new Person { ID = 15,Name = "Donna" },new Person { ID = 20,Name = "Edward" } }; public ObservableCollection<Person> PersonList { get; set; } }
Person.cs
public class Person { public string Name { get; set; } public int ID { get; set; } }
MainWindow.xaml(功能工作版本 – 不是我想要显示)
<Window x:Class="TestApp.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid> <ComboBox Height="23" Width="300" ItemsSource="{Binding Path=Objects}" DisplayMemberPath="Name" > </ComboBox> </Grid> </Window>
MainWindow.xaml(正确显示 – 无法正常工作)
<Window x:Class="TestApp.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> <Grid> <ComboBox Height="23" Width="300" ItemsSource="{Binding Path=Objects}" > <ComboBox.ItemTemplate> <DataTemplate> <TextBlock DataContext="{Binding}"> <TextBlock.Text> <MultiBinding StringFormat="{} {0} | {1}"> <Binding Path="ID" /> <Binding Path="Name" /> </MultiBinding> </TextBlock.Text> </TextBlock> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> </Grid> </Window>
第二个代码显示了我想要的组合框显示{ID} | {Name},但它消除了ComboBox的一个常用功能.在第一个例子中,当选择ComboBox时,用户可以开始输入它并让它从列表中跳下来.例如,如果按字母A,它跳转到“Adam”,B跳转到“Bill”等.这是ComboBox应该如何运作.但是,当我重写ComboBox ItemTemplate时,它会丢失该功能.是否有另一种方式来绑定我需要的东西,并保持该功能或重新启用? ItemTemplate也许设置错误?
解决方法
看到我对这个问题的回答:
Can I do Text search with multibinding
不幸的是,TextSearch.Text在DataTemplate中不起作用.我想你有两个选择
选项1.将ComboBox的IsTextSearchEnabled设置为True,覆盖源类中的ToString,并将TextBlock中的MultiBinding更改为绑定
<ComboBox ... IsTextSearchEnabled="True"> <ComboBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding}"/> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> public class Person { public override string ToString() { return String.Format("{0} | {1}",Name,ID); } public string Name { get; set; } public int ID { get; set; } }
选项2.在源类中创建一个新的Property,您可以将TextSearch.TextPath的Name和ID组合在一起.此外,只要您为Name或ID进行操作,您应该为NameAndId调用OnPropertyChanged
<ComboBox ... TextSearch.TextPath="NameAndId" IsTextSearchEnabled="True"> public string NameAndId { return String.Format("{0} | {1}",ID); }