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如何将数据绑定到子对象的子对象？

[英]How do I databind to children of a child object?

 原文  2010-01-04 21:26:03  8   2    wpf/ data-binding/ binding

问题描述

以下是我的XML对象示例。 由于隐私原因，我不得不取出实际数据，但是您应该掌握所有要点。 目前，我的装订工作效果很好，但是我无法获得一个盒子来填写必要的Granchild信息。 列表框工作正常，这可能是我最后没有看到的逻辑问题。

每个医生可以有一个或多个doctoroffices，但每个doctoroffice只属于一个集团是一家集本身。 Nettiers启用了一个IdSource属性，该属性使您可以定义孙子元素而不是遍历层次结构。 这就是我要填写的内容。正在填充GroupIdSource，但绑定根本没有抓住它。 

<TextBlock Grid.Row="0" Grid.Column="1" Background="blue" FontSize="12" 
           FontWeight="Bold" >
  **<Label Content="{Binding Path=GroupIdSource.GroupName}**"/>




<Doctors xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:xsd="http://www.w3.org/2001/XMLSchema">
      <EntityState> </EntityState>
      <Id> </Id>
      <DisplayName> </DisplayName>
      <FirstName> </FirstName>
      <LastName> </LastName>
      <MiddleName> </MiddleName>
      <Credentials xsi:nil="true" />
      <AddDate> </AddDate>
      <AddUserId> </AddUserId>
      <ChangeDate> </ChangeDate>
      <ChangeUserId> </ChangeUserId>
      <ProviderTypeId> </ProviderTypeId>
      <SpecialtyId> </SpecialtyId>
      <DoctorOfficesCollection>
        <DoctorOffices>
          <EntityState> </EntityState>
          <DoctorsId> </DoctorsId>
          <ForeignId> </ForeignId>
          <OriginalForeignId> </OriginalForeignId>
          <Active> </Active>
          <Address1> </Address1>
          <Address2> </Address2>
          <Address3> </Address3>
          <City> </City>
          <State> </State>
          <Zip> </Zip>
          <PrimaryPhone> </PrimaryPhone>
          <Fax> </Fax>
          <AlternatePhone1 xsi:nil="true" />
          <AlternatePhone2> </AlternatePhone2>
          <OfficeName xsi:nil="true" />
          <OfficeDisplayName> </OfficeDisplayName>
          <AddDate> </AddDate>
          <AddUserId> </AddUserId>
          <ChangeDate> </ChangeDate>
          <ChangeUserId> </ChangeUserId>
          <CommonOfficeIdentifier> </CommonOfficeIdentifier>
          <GroupId> </GroupId>
          <OfficeNotesCollection />
          <HasChanges> </HasChanges>
          <GroupIdSource>
            <EntityState> </EntityState>
            <Id> </Id>
            <GroupCode> </GroupCode>
            <GroupName> </GroupName>
            <DoctorOfficesCollection />
          </GroupIdSource>
        </DoctorOffices>
      </DoctorOfficesCollection>
      <DoctorTaxonomyCollection>
        <DoctorTaxonomy>
          <EntityState> </EntityState>
          <DoctorId> </DoctorId>
          <OriginalDoctorId> </OriginalDoctorId>
          <TaxonomySpecializationId> </TaxonomySpecializationId>
          <OriginalTaxonomySpecializationId> </OriginalTaxonomySpecializationId>
          <TaxonomyTypeId> </TaxonomyTypeId>
          <OriginalTaxonomyTypeId> </OriginalTaxonomyTypeId>
          <TaxonomyClassificationId> </TaxonomyClassificationId>
          <OriginalTaxonomyClassificationId> </OriginalTaxonomyClassificationId>
          <AddDate> </AddDate>
          <AddUserId> </AddUserId>
          <ChangeDate xsi:nil="true" />
          <ChangeUserId xsi:nil="true" />
        </DoctorTaxonomy>
      </DoctorTaxonomyCollection>
      <DoctorHome>
        <EntityState> </EntityState>
        <DoctorsId> </DoctorsId>
        <OriginalDoctorsId> </OriginalDoctorsId>
        <Address1> </Address1>
        <Address2 xsi:nil="true" />
        <Address3 xsi:nil="true" />
        <City> </City>
        <State> </State>
        <Zip> </Zip>
        <PrimaryPhone xsi:nil="true" />
        <Fax xsi:nil="true" />
        <AddDate> </AddDate>
        <AddUserId> </AddUserId>
        <ChangeDate> </ChangeDate>
        <ChangeUserId> </ChangeUserId>
      </DoctorHome>
      <DoctorLicenses>
        <EntityState> </EntityState>
        <DoctorsId> </DoctorsId>
        <OriginalDoctorsId> </OriginalDoctorsId>
        <LicenseNumber> </LicenseNumber>
        <DeaNumber xsi:nil="true" />
        <NpiNumber> </NpiNumber>
        <Bc_StateLicenseNumber> </Bc_StateLicenseNumber>
        <ChampusIdNumber> </ChampusIdNumber>
        <MedicaidLicenseNumber> </MedicaidLicenseNumber>
        <Medicaid1500LicenseNumber> </Medicaid1500LicenseNumber>
        <MedicareLicenseNumber> </MedicareLicenseNumber>
        <MedchiNumber xsi:nil="true" />
        <UpinNumber> </UpinNumber>
        <AddDate> </AddDate>
        <AddUserId> </AddUserId>
        <ChangeDate> </ChangeDate>
        <ChangeUserId> </ChangeUserId>
      </DoctorLicenses>
      <TaxonomyTypeIdTaxonomyClassificationIdTaxonomySpecializationIdTaxonomySpecializationCollection_From_DoctorTaxonomy />
      <SpecialtyIdSource>
        <EntityState> </EntityState>
        <Id> </Id>
        <OriginalId> </OriginalId>
        <Description> </Description>
        <Flag> </Flag>
        <DoctorsCollection />
      </SpecialtyIdSource>
      <ProviderTypeIdSource>
        <EntityState> </EntityState>
        <Id> </Id>
        <OriginalId> </OriginalId>
        <Description> </Description>
        <Flag> </Flag>
        <DoctorsCollection />
      </ProviderTypeIdSource>
      <EditingUser> </EditingUser>
    </Doctors>

这也是我的Full XAML也可以提供帮助。 我有一个 。 数据绑定在上面工作，但是绑定到我的数据视图的方式有所不同。 它直接绑定到对象然后是其子对象...您可以在第一个NPINumber列表框中看到它... 

<Grid x:Class="Views.DoctorMasterDetailView"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:ad="clr-namespace:WavelengthIS.Infrastructure.AttachedProperties;assembly=WavelengthIS.Infrastructure"
      xmlns:clr="clr-namespace:System;assembly=mscorlib"
      xmlns:c="clr-namespace:WavelengthIS.Infrastructure.Converters;assembly=WavelengthIS.Infrastructure"
      xmlns:vw="clr-namespace:WavelengthIS.Referee.Modules.DoctorMasterDetail.ViewModel"
      MinHeight="480" MinWidth="640">
    <Grid.Resources>
        <c:StringTrimmingConverter x:Key="trimmingConverter" />
        <c:CombineStringsConverter x:Key="CombineStringsConverter"/>
        <c:TextToVisibilityConverter x:Key="TextToVisibilityConverter"/>
    </Grid.Resources>
    <Grid.DataContext>
        <vw:DoctorMasterDetailViewModel/>
    </Grid.DataContext>
    <Grid.ColumnDefinitions>
        <ColumnDefinition MinWidth="100" Width="150" />
        <ColumnDefinition/>
    </Grid.ColumnDefinitions>
    <GridSplitter Grid.Column="0" 
              HorizontalAlignment="Right" 
              VerticalAlignment="Stretch"
              Background="Black" 
              ShowsPreview="false"
              Width="2"/>
    <ListBox x:Name="DoctorHeaderList" Grid.Column="0" Background="Green" Margin="0,0,2,0"
             ItemsSource="{Binding DoctorsList}"
             SelectedItem="{Binding SelectedDoctor}">
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel>
                    <Border BorderBrush="Black" 
                        BorderThickness="1"
                        Background="White"
                        Width="{Binding ElementName=DoctorHeaderList, Path=ActualWidth}"
                        CornerRadius="5"
                        Margin="5"
                        Padding="5">
                        <TextBlock Text="{Binding Path=DisplayName, Converter={StaticResource trimmingConverter}}" Foreground="Black" FontSize="14"/>
                    </Border>
                    <TextBlock Text="{Binding Path=DoctorLicenses.NpiNumber, StringFormat='NPI Number: {0}'}"/>
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
    <ListBox x:Name="DoctorOfficesList" Grid.Column="1" Background="Orange"
             ItemsSource="{Binding Path=SelectedDoctor.DoctorOfficesCollection}" HorizontalContentAlignment="Stretch">
    <!--DESIGN TIME BINDING ONLY!!!!!!!!!!!!!!!!!!!!-->
    <!--<ListBox x:Name="DoctorOfficesList" Grid.Column="1" Background="Orange"
             ItemsSource="{Binding Path=Offices}" HorizontalContentAlignment="Stretch">-->
        <ListBox.ItemTemplate>
            <DataTemplate>
                <Border BorderThickness="2" BorderBrush="Black" CornerRadius="5" Margin="1" >
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition MinHeight="10" />
                            <RowDefinition MinHeight="35" />
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition />
                            <ColumnDefinition />
                        </Grid.ColumnDefinitions>
                        <TextBlock Grid.Row="0" Grid.Column="0" Background="red" >
                            <Label Content="Physician Number: "/>
                            <Label Content="{Binding Path=ForeignId, StringFormat='Physician Number: {0}'}"
                                    FontSize="12" FontWeight="Bold" />
                        </TextBlock>
                        <TextBlock Grid.Row="0" Grid.Column="1" Background="blue" FontSize="12" FontWeight="Bold" >
                            <Label Content="{Binding Path=GroupIdSource.GroupName}"/>
                        </TextBlock>
                        <StackPanel  Orientation="Horizontal" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" Background="green">
                            <StackPanel Orientation="Vertical" >
                                <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address1, Converter={StaticResource trimmingConverter}}"/>
                                <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address2, Converter={StaticResource trimmingConverter}}"/>
                                <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address3, Converter={StaticResource trimmingConverter}}"/>
                                <TextBlock Margin="5,0,0,0">
                            <TextBlock.Text>
                                <MultiBinding  StringFormat="{}{0}, {1}  {2}">
                                    <Binding Path="City"/>
                                    <Binding Path="State"/>
                                    <Binding Path="Zip"/>
                                </MultiBinding>
                            </TextBlock.Text>
                                </TextBlock>
                            </StackPanel>
                            <StackPanel Orientation="Vertical" Margin="5,0,0,0" FlowDirection="RightToLeft">
                                <TextBlock Text="{Binding Path=PrimaryPhone, StringFormat='Primary Phone: {0}'}"/>
                                <TextBlock Text="{Binding Path=Fax, StringFormat='Fax: {0}'}" />
                                <TextBlock Text="{Binding Path=AlternatePhone1, StringFormat='Alternate Phone 1: {0}'}" 
                                       Visibility="{Binding Path=AlternatePhone1, Converter={StaticResource TextToVisibilityConverter}}" />
                                <TextBlock Text="{Binding Path=AlternatePhone2, StringFormat='Alternate Phone 2: {0}'}"
                                        Visibility="{Binding Path=AlternatePhone2, Converter={StaticResource TextToVisibilityConverter}}" />
                            </StackPanel>
                        </StackPanel>
                    </Grid>
                </Border>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>


</Grid>

2 个解决方案

解决方案1
 0  2010-01-04 21:29:39

当绑定XML数据源时，应该使用XPath而不是Path来到达所需的元素/属性。

编辑：您需要以某种方式将对象设置为控件（或其祖先之一）的数据上下文，然后可以引用它的任何属性或嵌套属性。 例如，在您的情况下： 

...{Binding Path=DoctorOfficesCollection[0].GroupIdSource.GroupName}...

解决方案2
 0 已采纳  2010-01-05 18:21:34

经过大量阅读，我终于明白了这一点。 但是实际上，相反，除非我在wpf控件的工作方式方面缺少某些知识，否则我的代码没有任何改变。 无论如何，我可能会在测试视图上慢慢消除这些更改，然后看看是否可以重现该问题。 以下是可能遇到类似问题并且需要知道如何执行此操作的任何人的工作代码。 

<GroupBox 
        x:Name="DoctorOffices" 
        Header="Doctor Offices" 
        DataContext="{Binding Path=SelectedDoctor.DoctorOfficesCollection}"
        Grid.Column="1" 
        Grid.Row="0">
        <ListBox x:Name="DoctorOfficesListBox"  Background="Green"
             ItemsSource="{Binding}"
                 IsSynchronizedWithCurrentItem="true">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Border BorderThickness="2" BorderBrush="Black" CornerRadius="5" Margin="1" >
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition MinHeight="10" />
                                <RowDefinition MinHeight="35" />
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition />
                                <ColumnDefinition />
                            </Grid.ColumnDefinitions>
                            <TextBlock Grid.Row="0" Grid.Column="0" Background="red" >
                            <Label Content="Physician Number: "/>
                            <Label Content="{Binding Path=ForeignId, StringFormat='Physician Number: {0}'}"
                                    FontSize="12" FontWeight="Bold" />
                            </TextBlock>
                            <TextBlock Background="white" Grid.Row="0" Grid.Column="1"
                                       Text="{Binding Path=GroupIdSource.GroupName}" />
                            <StackPanel  Orientation="Horizontal" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" Background="green">
                                <StackPanel Orientation="Vertical" >
                                    <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address1, Converter={StaticResource trimmingConverter}}"/>
                                    <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address2, Converter={StaticResource trimmingConverter}}"/>
                                    <TextBlock Margin="5,0,0,0" Text="{Binding Path=Address3, Converter={StaticResource trimmingConverter}}"/>
                                    <TextBlock Margin="5,0,0,0">
                            <TextBlock.Text>
                                <MultiBinding  StringFormat="{}{0}, {1}  {2}">
                                    <Binding Path="City"/>
                                    <Binding Path="State"/>
                                    <Binding Path="Zip"/>
                                </MultiBinding>
                            </TextBlock.Text>
                                    </TextBlock>
                                </StackPanel>
                                <StackPanel Orientation="Vertical" Margin="5,0,0,0" FlowDirection="RightToLeft">
                                    <TextBlock Text="{Binding Path=PrimaryPhone, StringFormat='Primary Phone: {0}'}"/>
                                    <TextBlock Text="{Binding Path=Fax, StringFormat='Fax: {0}'}" />
                                    <TextBlock Text="{Binding Path=AlternatePhone1, StringFormat='Alternate Phone 1: {0}'}" 
                                       Visibility="{Binding Path=AlternatePhone1, Converter={StaticResource TextToVisibilityConverter}}" />
                                    <TextBlock Text="{Binding Path=AlternatePhone2, StringFormat='Alternate Phone 2: {0}'}"
                                        Visibility="{Binding Path=AlternatePhone2, Converter={StaticResource TextToVisibilityConverter}}" />
                                </StackPanel>
                            </StackPanel>
                        </Grid>
                    </Border>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </GroupBox>

如您所见，我所做的唯一不同的事情是单独将一个组框添加到列表框的原始数据绑定中，然后将itemsource更改为{bindings}。 其他更改均不具有任何实际效果。

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