ComboBox是否可用Binding的方式绑定数据呢?

[踏雪听雨]

ComboBox是否可用Binding的方式绑定数据呢?
如:
Binding = "{Binding Path=State, Mode=TwoWay}"

[jv9]

当然可以了.

public class ComboBoxService {
public static readonly DependencyProperty ForceOpenProperty =
DependencyProperty.RegisterAttached("ForceOpen", typeof(bool), typeof(ComboBoxService),
new PropertyMetadata(OnForceOpenChanged));

public static bool GetForceOpen(DependencyObject d) {
return (bool)d.GetValue(ForceOpenProperty);
}

public static void SetForceOpen(DependencyObject d, bool value) {
d.SetValue(ForceOpenProperty, value);
}

private static void OnForceOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) {
ComboBox comboBox = d as ComboBox;
if ((bool)e.OldValue) {
comboBox.Loaded -= new RoutedEventHandler(comboBox_Loaded);
}
if ((bool)e.NewValue) {
comboBox.Loaded +=new RoutedEventHandler(comboBox_Loaded);
}
}

static void comboBox_Loaded(object sender, RoutedEventArgs e) {
ComboBox comboBox = sender as ComboBox;
if (null == comboBox) {
comboBox = e.OriginalSource as ComboBox;
}
//
comboBox.IsDropDownOpen = true;
}
}


<ComboBox ItemsSource="{Binding CityList, Source={StaticResource cityProvider}}"
SelectedItem="{Binding CityInfo, Mode=TwoWay}"
DisplayMemberPath="CityName"
src:ComboBoxService.ForceOpen="true"
/>