我有一个绑定到 ObservableCollection<Source> 的组合框。在类中有 2 个属性 ID 和 Type,以及我将 ID 与 Type 结合的 ToString() 方法。当我更改组合框中的类型时,它仍然显示旧类型,但对象已更改。
public partial class ConfigView : UserControl,INotifyPropertyChanged
{
public ObservableCollection<Source> Sources
{
get { return _source; }
set { _source = value;
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs("Sources"));
}
}
public ConfigView()
{
InitializeComponent();
this.DataContext = this;
Sources = new ObservableCollection<Source>();
}
public ChangeSelected(){
Source test = lstSources.SelectedItem as Source;
test.Type = Types.Tuner;
}
}
看法:
<ListBox x:Name="lstSources" Background="Transparent" Grid.Row="1" SelectionChanged="lstSources_SelectionChanged" ItemsSource="{Binding Sources, Mode=TwoWay}" />
源类:
public enum Types { Video, Tuner }
[Serializable]
public class Source: INotifyPropertyChanged
{
private int id;
public int ID
{
get { return id; }
set { id = value;
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs("ID"));
}
}
private Types type;
public Types Type
{
get { return type; }
set { type = value;
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs("Type"));
}
}
public Source(int id, Types type)
{
Type = type;
ID = id;
}
public override string ToString()
{
return ID.ToString("00") + " " + Type.ToString();
}
public event PropertyChangedEventHandler PropertyChanged;
}
当类型是视频时,当我将类型更改为调谐器时,组合框显示 01 视频,组合框仍然显示 01 视频,但它应该是 01 调谐器。但是当我调试对象类型更改为调谐器。