我的目标是在ShellView的网格中显示4个不同的活动ViewModel。问题是我无法弄清楚如何将ContentControl连接到导体项目中的特定项目。他该怎么办?
这里是我正在尝试做的简化版本。
ShellViewModel:
namespace ContentControlTest.ViewModels
{
public class ShellViewModel : Conductor<object>.Collection.AllActive
{
public ShellViewModel()
{
ActivateItem(new UC1ViewModel());
ActivateItem(new UC2ViewModel());
ActivateItem(new UC3ViewModel());
ActivateItem(new UC4ViewModel());
}
}
}
ShellView:
<Window x:Class="ContentControlTest.Views.ShellView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ContentControlTest.Views"
xmlns:cal="http://www.caliburnproject.org"
mc:Ignorable="d"
Title="ShellView" Height="450" Width="800"
>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<ScrollViewer Grid.Row="0" Grid.Column="0" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<ContentControl cal:View.Model="{Binding UC1ViewModel}" cal:View.Context="{Binding Items[0]}"/>
</ScrollViewer>
<ScrollViewer Grid.Row="0" Grid.Column="1" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<ContentControl cal:View.Model="{Binding UC2ViewModel}" cal:View.Context="{Binding Items[1]}"/>
</ScrollViewer>
<ScrollViewer Grid.Row="1" Grid.Column="0" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<ContentControl cal:View.Model="{Binding UC3ViewModel}" cal:View.Context="{Binding Items[2]}"/>
</ScrollViewer>
<ScrollViewer Grid.Row="1" Grid.Column="1" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
<ContentControl cal:View.Model="{Binding UC4ViewModel}" cal:View.Context="{Binding Items[3]}"/>
</ScrollViewer>
</Grid>
</Window>
为简单起见,每个UserControl ViewModel和View都是相同的:
UC#ViewModel:
namespace ContentControlTest.ViewModels
{
public class UC1ViewModel : Screen
{
private string id;
public string ID
{
get { return id; }
set
{
id = value;
NotifyOfPropertyChange(() => ID);
}
}
public UC1ViewModel()
{
ID = Guid.NewGuid().ToString();
}
}
}
UC#View:
<UserControl x:Class="ContentControlTest.Views.UC1View"
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:ContentControlTest.Views"
xmlns:cal="http://www.caliburnproject.org"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800"
>
<Border BorderBrush="Black" BorderThickness="1">
<StackPanel >
<TextBlock Text="{Binding DisplayName}"/>
<TextBlock Text="{Binding ID}"/>
</StackPanel>
</Border>
</UserControl>
为了进行测试,我尝试使用ItemControl,它可以工作,但不能完全满足我的需求。
<ItemsControl x:Name="Items">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel></StackPanel>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
[您需要在ShellViewModel
中创建属性,例如UC1
,UC2
,UC3
等。然后,您需要更改ShellView
以绑定到UC1
属性。
<ContentControl x:Name="UC1" />
...
Caliburn Micro应该为您做管道。
namespace ContentControlTest.ViewModels
{
public class ShellViewModel : Conductor<object>.Collection.AllActive
{
// Modify to implement INotifyPropertyChanged event...
public UC1ViewModel UC1 { get; set }
public ShellViewModel()
{
UC1 = new UC1ViewModel();
ActivateItem(UC1);
ActivateItem(new UC2ViewModel());
ActivateItem(new UC3ViewModel());
ActivateItem(new UC4ViewModel());
}
}
}