我在XAML与Element Name绑定时遇到了一个奇怪的问题。
一切正常但是当我用StackPanel包围控件和用户控件时，我得到了绑定错误。
我将两个用户控件的可见性与两个togglebuttons（IsDeadToggle和IsNotTransportable）的IsChecked属性绑定并使用ElementName。
<ItemsControl AlternationCount="100" FocusVisualStyle="{x:Null}" HorizontalAlignment="Left">
<ItemsControl.ItemsSource>
<CompositeCollection>
<StackPanel x:Name="FirstSP" Margin="0,0,10,0">
<TextBlock FocusVisualStyle="{x:Null}"
Style="{StaticResource WrapTitleAddTextBlock}"
Text="{x:Static languages:ResCommon.General}" />
<StackPanel x:Name="BuggedSP" Background="{StaticResource WrapBackground}">
<StackPanel Orientation="Horizontal"
Margin="10,20">
<RadioButton Content="{x:Static languages:ResCommon.Man}"
IsChecked="{Binding Path=Add.Presenter.Customer.Gender, Mode=TwoWay, Converter={StaticResource EnumMatchToBooleanConverter}, ConverterParameter=Male}" />
<RadioButton x:Name="IsWoman"
Content="{x:Static languages:ResCommon.Woman}"
IsChecked="{Binding Path=Add.Presenter.Customer.Gender,
Mode=TwoWay,
Converter={StaticResource EnumMatchToBooleanConverter},
ConverterParameter=Female}" />
</StackPanel>
<formElement:LabelComboBox Margin="{StaticResource ControlAddMargin}"
Visibility="{Binding Add.Presenter.Customer.CustomerIdInsured, Converter={StaticResource NullToVisibilityConverter}}"
LabelName="{x:Static languages:ResCommon.BeneficiaryType}"
ComboBoxDisplayMemberItem="Translation"
ComboBoxSelectedValueItem="Enum"
ComboBoxItems="{Binding Source={me:EnumValues EnumType=entities:TypeOfBeneficiary, ResourceName='Languages.ResEnum,Languages'}}"
ComboBoxSelectedItem="{Binding Add.Presenter.Customer.TypeOfBeneficiary}" />
<formElement:InnerLabelBox Margin="{StaticResource ControlAddMargin}"
LabelName="{x:Static languages:ResCommon.LastName}"
TextBoxValue="{Binding Add.Presenter.Customer.LastName,
Converter={StaticResource StringToUpperStringConverter},
Mode=TwoWay,
ValidatesOnDataErrors=true,
NotifyOnValidationError=true}" />
<formElement:LabelBox Margin="{StaticResource ControlAddMargin}"
LabelName="{x:Static languages:ResCommon.MaidenName}"
TextBoxValue="{Binding Add.Presenter.Customer.MaidenName,
Converter={StaticResource StringToUpperStringConverter},
Mode=TwoWay,
ValidatesOnDataErrors=true,
NotifyOnValidationError=true}"
Visibility="{Binding IsChecked,
ElementName=IsWoman,
Converter={StaticResource BooleanToVisibilityConverter}}" />
<formElement:InnerLabelBox Margin="{StaticResource ControlAddMargin}"
LabelName="{x:Static languages:ResCommon.FirstName}"
TextBoxValue="{Binding Add.Presenter.Customer.FirstName,
Converter={StaticResource StringToCapitalizeStringConverter},
Mode=TwoWay,
ValidatesOnDataErrors=true,
NotifyOnValidationError=true}" />
<resources:DateTimePickerTextBoxSwitch
Margin="{StaticResource ControlAddMargin}"
TextBoxValue="{Binding Add.Presenter.Customer.BirthDateCustom,
Mode=TwoWay,
ValidatesOnDataErrors=true,
NotifyOnValidationError=true}"
DateTimeValue="{Binding Add.Presenter.Customer.BirthDate, Mode=TwoWay}" />
<Grid Width="220" Margin="10,10,10,0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="60"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Style="{StaticResource DarkSmallFontStyle}" Text="{x:Static languages:ResCustomers.IsDead}"></TextBlock>
<ToggleButton Grid.Column="1" IsChecked="{Binding Add.Presenter.Customer.IsAlive, Mode=TwoWay}"
Style="{StaticResource OnOffToggleButton}"
x:Name="IsDeadToggle" />
</Grid>
<formElement:LabelDatePicker Margin="{StaticResource ControlAddMargin}"
DatePickerValue="{Binding Add.Presenter.Customer.DeathDate,
Mode=TwoWay}"
LabelName="{x:Static languages:ResCustomers.DeathDate}"
Visibility="{Binding IsChecked,
ElementName=IsDeadToggle,
Converter={StaticResource BooleanToVisibilityConverterCustomInvert}}"
PrintEnum="WithDate" />
<Grid Width="220" Margin="10,10,10,0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="60"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Style="{StaticResource DarkSmallFontStyle}" Text="{x:Static languages:ResCustomers.IsNoTransportable}"></TextBlock>
<ToggleButton Grid.Column="1" IsChecked="{Binding Add.Presenter.Customer.IsNoTransportable, Mode=TwoWay}"
Style="{StaticResource OnOffToggleButton}"
x:Name="IsNotTransportableToggle" />
</Grid>
<formElement:MultiLineTextBox
Margin="{StaticResource ControlAddMargin}"
LabelName="{x:Static languages:ResCustomers.NoTransportComment}"
TextBoxValue="{Binding Add.Presenter.Customer.NoTransportComment,
Mode=TwoWay,
ValidatesOnDataErrors=true,
NotifyOnValidationError=true}"
Visibility="{Binding IsChecked,
ElementName=IsNotTransportableToggle,
Converter={StaticResource BooleanToVisibilityConverterCustom}}" />
</StackPanel>
</StackPanel>
添加的StackPanel是具有以下属性的StackPanel
x:name="BuggedSP"
错误：
System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=IsDeadToggle'. BindingExpression:Path=IsChecked; DataItem=null; target element is 'LabelDatePicker' (Name='UCLabelDatePicker'); target property is 'Visibility' (type 'Visibility')
编辑1：
如果我删除了FirstSP StackPanel它再次起作用......我开始认为这是一个深度问题。但我不明白为什么我的绑定不会在特定的深度级别工作
编辑2：
如果我删除了togglebuttons周围的网格，它也不起作用，所以如果切换与用户控件处于同一级别并不重要。
因此，使用VisualTree（WPF树WPF树可视化工具），一切都很好：
<WrapPanel>
<ItemsControl>
<ItemsPresenter>
<WrapPanel>
<StackPanel>
<!-- List of UC and Toggles-->
有了这个，它不起作用：
<WrapPanel>
<ItemsControl>
<ItemsPresenter>
<WrapPanel>
<StackPanel>
<StackPanel x:Name="BuggedSp">
<!-- List of UC and Toggles-->
答案 0 :(得分：0)
我可以看到您的ToggleButton，IsDeadToggle在IsChecked属性上绑定了数据上下文的Add.Presenter.Customer.IsAlive属性。
我还可以看到您尝试将Visibility的{{1}}属性绑定到LabelDatePicker的{{1}}属性，使用转换器进行反转，然后将bool值转换为IsChecked。
由于ToggleButton和System.Windows.Visibility共享相同的数据上下文，我只需将ToggleButton的可见性绑定到数据上下文中的同一属性：
LabelDatePicker注意：数据上下文（LabelDatePicker对象）需要实现<formElement:LabelDatePicker
Margin="{StaticResource ControlAddMargin}"
DatePickerValue="{Binding Add.Presenter.Customer.DeathDate, Mode=TwoWay}"
LabelName="{x:Static languages:ResCustomers.DeathDate}"
Visibility="{Binding Add.Presenter.Customer.IsAlive, Converter={StaticResource BooleanToVisibilityConverterCustomInvert}}"
PrintEnum="WithDate" />
，Customer属性需要使用属性名称引发System.ComponentModel.INotifyPropertyChanged事件确保在IsAlive复选框更改其值后，PropertyChanged已正确通知重新绑定。
有关详细信息，请参阅MSDN：http://msdn.microsoft.com/en-us/library/system.componentmodel.inotifypropertychanged(v=vs.110).aspx
作为一项规则，我倾向于避免元素到元素的绑定，而是支持数据上下文中的公共属性。这种方式更易测试且更不易碎（就像更改源元素的名称LabelDatePicker一样，那么您需要记住更新绑定目标）。