我有一个UserControl,它具有包含我自己的自定义类的实例的ViewModel,将其称为Person。这个ViewModel被设置为控件的DataContext。我想在我的主窗口中使用这个控件,在它的ViewModel中有一个名为People的人员名单。我打电话给我的xaml中的控件,如下所示:数据绑定项目控件中的用户控件
<ItemsControl ItemsSource="{Binding People}">
<ItemsControl.ItemsTemplate>
<DataTemplate>
<userControls:PersonDetails />
</DataTemplate>
</ItemsControl.ItemsTemplate>
</ItemsControl>
控件中的属性以这种方式绑定。
<TextBlock Text="{Binding Person.Name}" />
当我运行时,我得到正确数量的控件的人数在列表中,但没有详细信息填充。我知道我正在做一些简单的错误,但找不到它。请帮忙。
编辑:
我的用户XAML看起来是这样的:
<UserControl x:Class="AddressBook.UserControls.PersonDetails"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:AddressBook.UserControls"
xmlns:vm="clr-namespace:AddressBook.ViewModels"
xmlns:enums="clr-namespace:AddressBook.Models"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="1000">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="40" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="1*" />
</Grid.ColumnDefinitions>
<TextBlock Style="{StaticResource PersonDetailHeader}" Text="Person Name:" />
<TextBlock Style="{StaticResource PersonDetailValue}" Grid.Column="1" Text="{Binding Person.Name,
UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Style="{StaticResource PersonDetailHeader}" VerticalAlignment="Center" Grid.Row="1" Text="Street Address:" />
<TextBlock Style="{StaticResource PersonDetailValue}" Grid.Row="1" Grid.Column="1"
Text="{Binding Person.StreetAddress, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Style="{StaticResource PersonDetailHeader}" Grid.Row="2" Text="Town:" />
<TextBlock Style="{StaticResource PeronDetailValue}" Grid.Row="2" Grid.Column="1"
Text="{Binding Person.Town, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Style="{StaticResource PersonDetailHeader}" Grid.Row="3" Text="County:" />
<TextBlock Style="{StaticResource PersonDetailValue}" Grid.Row="3" Grid.Column="1"
Text="{Binding Person.County, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Style="{StaticResource PersonDetailHeader}" Grid.Row="4" Text="Postcode:" />
<TextBlock Style="{StaticResource PersonDetailValue}" Grid.Row="4" Grid.Column="1"
Text="{Binding Person.Postcode, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock Style="{StaticResource PersonDetailHeader}" Grid.Row="5" Text="Phone:" />
<TextBlock Style="{StaticResource PersonDetailValue}" Grid.Row="5" Grid.Column="1"
Text="{Binding Person.Phone, UpdateSourceTrigger=PropertyChanged}" />
<StackPanel Grid.Row="7" Grid.ColumnSpan="2" HorizontalAlignment="Center" Orientation="Horizontal">
<Button Style="{StaticResource ButtonStyle}" Content="Click" Command="{Binding ButtonClickCommand}" />
</StackPanel>
</Grid>
用户控件视图模型:
public class PersonDetailsViewModel
{
public Person Person { get; set; }
public Command ButtonClickCommand { get; }
public PersonDetailsViewModel()
{
ButtonClickCommand = new Command(ButtonClick);
}
private void ButtonClick(object obj)
{
throw new NotImplementedException();
}
UserControl.xaml.cs:
public partial class PersonDetails : UserControl
{
public PersonDetails()
{
InitializeComponent();
}
}
个
Person.cs
public class Person : BaseModel
{
public string Name
{
get { return name; }
set
{
name = value;
NotifyPropertyChanged();
}
等....
MainViewModel:
public class MainViewModel : BaseViewModel
{
public ObservableCollection<Person> People { get; }
= new ObservableCollection<Person>();
public MainViewModel()
{
PopulatePeople();
}
}
监听用户控制的数据上下文已更改事件并检查您正在获取的数据上下文。无论是你想要的,也就是你的人员课程是否正确? – Versatile
灰 - 输出中无绑定错误。 –
Silvermind - 谢谢,但这没有奏效。 Versatile - DataContextChanged事件甚至没有触发,所以它显然没有被设置。 –