Question

我有一个控件，需要使用一个复选框来启用禁用部分，但我需要将它绑定到一个类所以我已经完成了以下操作。所以我的问题是我如何设置绑定到例如IncidentBuilderProperty.IsEnabled我应该使用参数进行代码编写。

<DockPanel DockPanel.Dock="Top" >
   <Label Content="Display" />
   <CheckBox Name="chkDisplayAdvanced" IsThreeState="False" VerticalAlignment="Center"
             IsChecked="{Binding isEnabled, Mode=TwoWay}" />
</DockPanel>

但在我的模型中，我有以下方式声明属性isEnabled。

所以我的问题是如何访问属性IncidentBuilderProperty.isEnabled，记住它们是每个属性的屏幕，上面有此复选框，但引用了一个自定义控件。

public class AssignedToMeViewData : WizardData, INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    public ManagementPack ManagmentPack { get; set; }
    public List<BuilderProperties> BuilderProperty { get; set; }
    public BuilderProperties GeneralPage { get; set; }
    public Exception LastKnownException { get; set; }
    [DefaultValue(true)]
    public bool IsNew { get; set; }

    public BuilderProperties IncidentBuilderProperty { get; set; }
    public BuilderProperties ProblemBuilderProperty { get; set; }
    public BuilderProperties ServiceRequestBuilderProperty { get; set; }
    public BuilderProperties ChangeRequestBuilderProperty { get; set; }
    public BuilderProperties RleaseRequestBuilderProperty { get; set; }
    public BuilderProperties ReviewActivityBuilderProperty { get; set; }
    public BuilderProperties ManualActivityBuilderProperty { get; set; }


    public class BuilderProperties
    {
        private bool isEnabled = true;
        public bool IsEnabled {
            get {
                return isEnabled;
            }
            set {
                if (isEnabled == value)
                    return;

                isEnabled = value;
            }
        }
    }
}

Answer 1

在控件的AssignedToMeViewData中设置DataContext，您可以在xaml中设置与BuilderProperties的所有绑定：

<DockPanel DockPanel.Dock="Top" >
    <Label Content="Display" />
    <CheckBox x:Name="chkIncident" IsChecked="{Binding IncidentBuilderProperty.IsEnabled, Mode=TwoWay}" VerticalAlignment="Center" />
    <CheckBox x:Name="chkProblem" IsChecked="{Binding ProblemBuilderProperty.IsEnabled, Mode=TwoWay}" VerticalAlignment="Center" />
    <CheckBox x:Name="chkService" IsChecked="{Binding ServiceRequestBuilderProperty.IsEnabled, Mode=TwoWay}" VerticalAlignment="Center" />
    <CheckBox x:Name="chkChanges" IsChecked="{Binding ChangeRequestBuilderProperty.IsEnabled, Mode=TwoWay}" VerticalAlignment="Center" />
    ...
</DockPanel>

但请注意Mode=TwoWay是CheckBox.Checked的默认值，因此您无需指定。

如果必须从代码隐藏中执行此操作，则可以设置类似的绑定：

chkIncident.SetBinding(CheckBox.IsCheckedProperty, 
                       new Binding("IncidentBuilderProperty.IsEnabled"));
chkProblem.SetBinding(CheckBox.IsCheckedProperty, 
                       new Binding("ProblemBuilderProperty.IsEnabled"));
chkService.SetBinding(CheckBox.IsCheckedProperty, 
                       new Binding("ServiceRequestBuilderProperty.IsEnabled"));
...

在从代码隐藏创建绑定时，请参阅kishore对您的问题的评论，以获取更多高级选项。

Answer 2

请尝试以下代码段

FrameworkElement targetObject = chkDisplayAdvanced;
DependencyProperty targetProperty = CheckBox.IsCheckedProperty; 
object sourceObject = IncidentBuilderProperty;//object of the actual Incidentbuilderclasss here
string sourceProperty = "IsEnabled"; 
var binding = new Binding(sourceProperty) { 
    Source = sourceObject, Mode = BindingMode.TwoWay 
    };
targetObject.SetBinding(targetProperty, binding);

如何解决绑定问题

2 个答案: