Xamarin 使用主/详细模板在代码隐藏中绑定

我已经生成了一个Master/Detail view应用程序（通过Xamarin的Master Detail模板，Visual Studio 2019），我正在尝试以代码隐藏而不是详细视图中的XAML执行数据绑定，以便检索和显示“Description”条目：

因此，我修改了我的ItemDetailPage.xaml，如下所示（注释掉了该部分）：

以便通过数据绑定显示“描述”条目。但是，除了在xaml文件中，我似乎无法访问相关的数据条目，这里是Models文件夹Items.cs中的“Description”

namespace MDDummy2.Models
{
    public class Item
    {
        public string Id { get; set; }
        public string Text { get; set; }
        public string Description { get; set; }
    }
}

和MockDataStore.cs（我打算在详细视图中显示描述条目所在的位置）

---

如何访问数据字段，例如代码隐藏中的“Description”，以便在详细视图中显示它？非常感谢你的帮助

什么是ItemDetailViewModel？您可以通过

testLabel.BindingContext=new{Description=“{binding Item.Description}”设置标签文本绑定
我做了一个关于使用代码隐藏绑定的示例，您可以看看：

 public partial class Page8 : ContentPage
{
    private ItemDetailViewModel viewmodel;
        
    public Page8()
    {
        InitializeComponent();

        viewmodel = new ItemDetailViewModel()
        {
            item = new Item() { Id = "1", Text = "this is item1", Description = "item class description" },
            m1 = new model1() {Id="2",Text="this is model1",Description="model1 class description." }

        };
   
        var layout = new StackLayout
        {
            Spacing = 40,
            Padding = new Thickness(20, 20, 20, 20),
            Orientation = StackOrientation.Horizontal
        };

        var testLabel = new Label();

        testLabel.SetBinding(Label.TextProperty, new Binding("Description",source:viewmodel.item) );
        layout.Children.Add(testLabel);
        var testLabel1 = new Label();

        testLabel1.SetBinding(Label.TextProperty, new Binding("Description",source:viewmodel.m1));
        layout.Children.Add(testLabel1);

        Content = layout;
        this.BindingContext = viewmodel;
    }       
}

public class Item
{
    public string Id { get; set; }
    public string Text { get; set; }
    public string Description { get; set; }
}
public class model1
{ 
    public string Id { get; set; }
    public string Text { get; set; }
    public string Description { get; set; }
}

public class ItemDetailViewModel
{
    public Item item { get; set; }
    public model1 m1 { get; set; }
}

为什么要将标签的BindingContrText设置为匿名对象，而不是使用传递到ItemDetailPage的ViewModel？谢谢！我很快就会试试的，我会让你知道有什么更新吗？是的，成功了！非常感谢！我使用了：testLabel.SetBinding（Label.TextProperty，新绑定（“Description”，来源：viewModel.Item））；
namespace MDDummy2.Models
{
    public class Item
    {
        public string Id { get; set; }
        public string Text { get; set; }
        public string Description { get; set; }
    }
}

 public partial class Page8 : ContentPage
{
    private ItemDetailViewModel viewmodel;
        
    public Page8()
    {
        InitializeComponent();

        viewmodel = new ItemDetailViewModel()
        {
            item = new Item() { Id = "1", Text = "this is item1", Description = "item class description" },
            m1 = new model1() {Id="2",Text="this is model1",Description="model1 class description." }

        };
   
        var layout = new StackLayout
        {
            Spacing = 40,
            Padding = new Thickness(20, 20, 20, 20),
            Orientation = StackOrientation.Horizontal
        };

        var testLabel = new Label();

        testLabel.SetBinding(Label.TextProperty, new Binding("Description",source:viewmodel.item) );
        layout.Children.Add(testLabel);
        var testLabel1 = new Label();

        testLabel1.SetBinding(Label.TextProperty, new Binding("Description",source:viewmodel.m1));
        layout.Children.Add(testLabel1);

        Content = layout;
        this.BindingContext = viewmodel;
    }       
}

public class Item
{
    public string Id { get; set; }
    public string Text { get; set; }
    public string Description { get; set; }
}
public class model1
{ 
    public string Id { get; set; }
    public string Text { get; set; }
    public string Description { get; set; }
}

public class ItemDetailViewModel
{
    public Item item { get; set; }
    public model1 m1 { get; set; }
}