我试图将List对象绑定到ListBox，但是当它运行时它没有ListBox中的项目，List本身确实有项目。
列表与LT;模块＆GT; _modules
public class Module
{
public Module(string ModuleName, string ModuleAbbreviation, string ModuleColor, bool ModuleAvailable)
{
this.ModuleName = ModuleName;
this.ModuleAbbreviation = ModuleAbbreviation;
this.ModuleColor = ModuleColor;
this.ModuleAvailable = ModuleAvailable;
}
public string ModuleName { get; set; }
public string ModuleAbbreviation { get; set; }
public string ModuleColor { get; set; }
public bool ModuleAvailable { get; set; }
}
ViewModel代码如下（已缩短，已包含模块列表的相关代码）：
namespace Users.ViewModel
{
public class AllUsersViewModel
{
public List<Module> _modules = new List<Module>();
#region Constructor
public AllUsersViewModel()
{
this.SetModuleList();
this.CreateAllUsers();
}
void SetModuleList()
{
_modules = ModuleRepository.GetModules();
}
public IEnumerable<Module> Modules
{
get { return _modules; }
}
void CreateAllUsers()
{
List<UserViewModel> all =
(from cust in _userRepository.GetUsers()
select new UserViewModel(cust, _userRepository)).ToList();
foreach (UserViewModel cvm in all)
cvm.PropertyChanged += this.OnUserViewModelPropertyChanged;
this.AllUsers = new ObservableCollection<UserViewModel>(all);
this.AllUsers.CollectionChanged += this.OnCollectionChanged;
}
public ObservableCollection<UserViewModel> AllUsers { get; private set; }
....
}
}
以下是XAML :(比你看到名为lstModules的ListBox的一半还要多一点）
<UserControl.Resources>
<CollectionViewSource x:Key="UserCollection" Source="{Binding Path=AllUsers}">
<CollectionViewSource.SortDescriptions>
<scm:SortDescription PropertyName="Name" Direction="Ascending" />
</CollectionViewSource.SortDescriptions>
</CollectionViewSource>
</UserControl.Resources>
<DataGrid AutoGenerateColumns="False" ItemContainerStyle="{StaticResource UserItemStyle}" AlternatingRowBackground="{x:Null}" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" Binding="{Binding Path=Name}"/>
<DataGridTextColumn Header="Job Title" Binding="{Binding Path=Job_Title}"/>
<DataGridTextColumn Header="Department" Binding="{Binding Path=Department}"/>
<DataGridTextColumn Header="Company" Binding="{Binding Path=Company}"/>
<DataGridTextColumn IsReadOnly="True" Binding="{Binding Path=Company}" CanUserResize="False" Width="580">
<DataGridTextColumn.Header>
<StackPanel Orientation="Vertical" HorizontalAlignment="Center">
<TextBlock HorizontalAlignment="Center">Modules</TextBlock>
<ListBox x:Name="lstModules" Width="190" ItemsSource="{Binding Modules}">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding ModuleName}"></TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</DataGridTextColumn.Header>
</DataGridTextColumn>
<DataGridTextColumn Header="Contact Detail" Binding="{Binding Path=Name}"/>
</DataGrid.Columns>
</DataGrid>
[编辑]完整XAML
<UserControl x:Class="Users.View.AllUsersView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:scm="clr-namespace:System.ComponentModel;assembly=WindowsBase"
mc:Ignorable="d"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
d:DesignHeight="160" d:DesignWidth="1100">
<UserControl.Resources>
<CollectionViewSource x:Key="UserCollection" Source="{Binding Path=AllUsers}">
<CollectionViewSource.SortDescriptions>
<scm:SortDescription PropertyName="Name" Direction="Ascending" />
</CollectionViewSource.SortDescriptions>
</CollectionViewSource>
<Style x:Key="UserItemStyle" TargetType="{x:Type DataGridRow}">
<!--
Stretch the content of each cell so that we can
right-align text in the Total Sales column.
-->
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<!--
Bind the IsSelected property of a ListViewItem to the
IsSelected property of a UserViewModel object.
-->
<Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}" />
<Style.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<!--
<Condition Property="ItemsControl.AlternationIndex" Value="1" />
-->
<Condition Property="IsSelected" Value="False" />
<Condition Property="IsMouseOver" Value="False" />
</MultiTrigger.Conditions>
<Setter Property="Background" Value="#EEEEEEEE" />
</MultiTrigger>
</Style.Triggers>
</Style>
<DataTemplate x:Key="headerTemplate">
<TextBlock Padding="0,0,0,0" Margin="0,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Bottom" Text="{Binding}"/>
</DataTemplate>
<Style x:Key="RowHeaderStyle2" TargetType="DataGridRowsPresenter">
<Setter Property="Background" Value="{x:Null}"/>
</Style>
<Style x:Key="ColumnHeaderStyle" TargetType="DataGridColumnHeader">
<Setter Property="VerticalContentAlignment" Value="Bottom"/>
<Setter Property="VerticalAlignment" Value="Bottom"/>
<Setter Property="Height" Value="25"/>
</Style>
<Style x:Key="ModuleColumnHeaderStyle" TargetType="GridViewColumnHeader">
<Setter Property="VerticalContentAlignment" Value="Bottom"/>
<Setter Property="Width" Value="550"/>
</Style>
<Style x:Key="rotatedTextStart" TargetType="TextBlock">
<Setter Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-45" />
</Setter.Value>
</Setter>
<Setter Property="VerticalAlignment" Value="Bottom"/>
<Setter Property="Width" Value="130"/>
<Setter Property="Margin" Value="12,0,0,0"/>
</Style>
<Style x:Key="rotatedTextMiddle" TargetType="TextBlock">
<Setter Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-45" />
</Setter.Value>
</Setter>
<Setter Property="VerticalAlignment" Value="Bottom"/>
<Setter Property="Width" Value="130"/>
<Setter Property="Margin" Value="-50,0,0,0"/>
</Style>
<Style x:Key="rotatedTextEnd" TargetType="TextBlock">
<Setter Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-45" />
</Setter.Value>
</Setter>
<Setter Property="VerticalAlignment" Value="Bottom"/>
<Setter Property="Width" Value="130"/>
<Setter Property="Margin" Value="-50,0,12,0"/>
</Style>
<Style x:Key="ListViewItemRotatedText" TargetType="ListViewItem">
<Setter Property="LayoutTransform">
<Setter.Value>
<RotateTransform Angle="-45" />
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<DockPanel>
<Grid DockPanel.Dock="Bottom" Margin="0,2,4,2">
<StackPanel HorizontalAlignment="Right" Orientation="Horizontal" VerticalAlignment="Center">
<TextBlock Text="Selected Users: " />
<ContentPresenter Content="{Binding Path=TotalSelectedUsers}" ContentStringFormat="0" />
<TextBlock Text=" of " />
<ContentPresenter Content="{Binding Path=TotalUsers}" ContentStringFormat="0" />
</StackPanel>
</Grid>
<DataGrid AutoGenerateColumns="False" ItemContainerStyle="{StaticResource UserItemStyle}" AlternatingRowBackground="{x:Null}" DataContext="{StaticResource UserCollection}" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTextColumn Header="Name" IsReadOnly="True" HeaderStyle="{StaticResource ColumnHeaderStyle}" HeaderTemplate="{StaticResource headerTemplate}" Binding="{Binding Path=Name}"/>
<DataGridTextColumn Header="Job Title" IsReadOnly="True" HeaderStyle="{StaticResource ColumnHeaderStyle}" HeaderTemplate="{StaticResource headerTemplate}" Binding="{Binding Path=Job_Title}"/>
<DataGridTextColumn Header="Department" IsReadOnly="True" HeaderStyle="{StaticResource ColumnHeaderStyle}" HeaderTemplate="{StaticResource headerTemplate}" Binding="{Binding Path=Department}"/>
<DataGridTextColumn Header="Company" IsReadOnly="True" HeaderStyle="{StaticResource ColumnHeaderStyle}" HeaderTemplate="{StaticResource headerTemplate}" Binding="{Binding Path=Company}"/>
<DataGridTextColumn IsReadOnly="True" Binding="{Binding Path=Company}" CanUserResize="False" Width="580">
<DataGridTextColumn.Header>
<StackPanel Orientation="Vertical" HorizontalAlignment="Center">
<TextBlock HorizontalAlignment="Center">Modules</TextBlock>
<ListBox x:Name="lstModules" Width="190" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}, Path=DataContext.Modules}">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding ModuleName}"></TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</DataGridTextColumn.Header>
</DataGridTextColumn>
<DataGridTextColumn Header="Contact Detail" IsReadOnly="True" HeaderStyle="{StaticResource ColumnHeaderStyle}" HeaderTemplate="{StaticResource headerTemplate}" Binding="{Binding Path=Name}"/>
</DataGrid.Columns>
</DataGrid>
</DockPanel>
</UserControl>
答案 0 :(得分：2)
ListBox属于DataGrid控件，它拥有自己的DataContext（AllUsers），它没有Modules属性。您应该从Modules的{{1}}获得UserControl：
DataContext