Question

我想根据搜索从我的视频类返回列表视图条目。在Videos类中，有单独的Video对象具有多个属性，如标题，视图，作者和上传日期。

如何根据搜索栏查询视频以返回视频对象？最后，我希望它根据title属性的查询返回视频对象的所有属性。

如果title.contatins（keyword）：返回视频对象

Homepage.xaml.cs：

public partial class Homepage : ContentPage
{
    List<Video> Videos = new List<Video>
        {
            new Video
            {
                Title = "Video 1",
                Author = "FedEx",
                Views = 322,
                Upload_DateTime = new DateTime(1996, 8, 26),
                ImageURL = "icon.png",

            },
            new Video
            {
                Title = "Video 2",
                Author = "FedEx",
                Views = 554,
                Upload_DateTime = new DateTime(2017, 1, 23),
                ImageURL = "icon.png",
            },
            new Video
            {
                Title = "Video 3",
                Author = "FedEx",
                Views = 23,
                Upload_DateTime = new DateTime(2012, 3, 11),
                ImageURL = "icon.png",
            },

        };


    public Homepage()
    {
        InitializeComponent();

        VideoListView.ItemsSource = Videos;
    }

    private void MainSearchBar_Pressed(object sender, EventArgs e)
    {
        var keyword = MainSearchBar.Text;
        VideoListView.ItemsSource = Videos.Where(Title = keyword);

    }

}

Video.cs：

 class Video
{
    public string Title { get; set; }

    public string Author { get; set; }
    public int Views { get; set; }
    public DateTime Upload_DateTime { get; set; }
    public string ImageURL { get; set; }
}

注意：MainSearchBar_Pressed事件处理程序让我失望

Answer 1

解决方案：

        private void MainSearchBar_Pressed(object sender, EventArgs e)
    {
        var keyword = MainSearchBar.Text;
        VideoListView.ItemsSource = Videos.Where(a => a.Title.Contains(keyword));

    }

Xamarin自定义列表视图搜索

1 个答案: