如何在我的另一页中获得点击的项目

Question

My Book课程

 public class Book{
    public string Title { get; set; }
    public string BookCover{ get; set; }

 }

public class Bookmanager
{
    public static List<Book> GetBook()
    {
        var BookID= new List<Book>();

        BookID.Add(new Book{ Title = "fruits", BookCover= "Assets/1.jpg" });
        BookID.Add(new Book{ Title = "food", BookCover= "Assets/2.jpeg" });

        return BookID;
    }
}

我的主页xaml

<GridView ItemsSource="{x:Bind BookID}" Margin="0,0,49,121" 
              ItemClick="GridView_ItemClick" IsItemClickEnabled="True" >
        <GridView.ItemTemplate>
            <DataTemplate x:DataType="local:Book">
                <Grid Height="186" Width="155">
                    <Image Stretch="Fill" Source="{x:Bind <GridView     ItemsSource="{x:Bind BookCover}" Margin="0,0,49,121" 
              ItemClick="GridView_ItemClick" IsItemClickEnabled="True" >
                </grid>
           </DataTemplate>
        </GridView.ItemTemplate>
    </GridView>

XAML.cs

这是我在XAML.cs中的源代码我已经编写了导航到我的图像的代码所以我应该在我的ItemPage中编写什么代码来检索我的BookCover图像。请帮助我＃39在这里新来的！

private void GridView_ItemClick(object sender, ItemClickEventArgs e)
    {
        var Mybooks= ((Book)e.ClickedItem).BookCover;
        this.Frame.Navigate(typeof(ItemPage), Mybooks);
    }

Answer 1

Page类已经实现了接口IPageOverrides。 所以你只需要在你的ItemPage中覆盖它，如下所示：

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    ////this.Frame.Navigate(typeof(ItemPage), Mybooks);
    //e.Parameter is Mybooks.
}