將數據綁定到數據網格

Question

我目前有一個URL請求帶回XML數據。 我將該數據存儲在讀取的文檔中，並查找某些屬性之間的信息，並將這些值分配給我指定的變量。 我的wpf DataGrid叫做Movie_DataGrid。 如何將這些數據提供給DataGrid會有任何幫助。

- 編輯 -

我用一種新的方式更新了我的代碼，我試圖得到我的結果。 當單步執行代碼的每一步時，XML存儲正常，並且Retrivalinfo類和Retrievalinfo convertedMovie = new Retrievalinfo（）之間的所有標記屬性都相同，但是此方法的應用程序錯誤。

我的新問題是，屬性中的值沒有被抓取和存儲。 我還提供了一些我會得到的XML樣本。

<root response="True">
<movie title="Up in the Air" year="2009" rated="R" released="23 Dec 2009" runtime="109 
min" genre="Drama, Romance" director="Jason Reitman" writer="Walter Kirn (novel), Jason
Reitman (screenplay), Sheldon Turner (screenplay)" actors="George Clooney, Vera Farmiga,
Anna Kendrick, Jason Bateman" plot="With a job that has him traveling around the country
firing people, Ryan Bingham leads an empty life out of a suitcase, until his company
does the unexpected: ground him." language="English" country="USA" awards="Nominated for
6 Oscars. Another 64 wins & 66 nominations."poster="http://ia.mediaimdb.com/images/M/MV5BMTI3MzYxMTA4NF5BMl5BanBnXkFtZTcwMD
E4ODg3Mg@@._V1_SX300.jpg" metascore="83" imdbRating="7.5" imdbVotes="215,961" imdbID="tt1193138" type="movie"/>
</root>    


     // This action will seach the IMDb API for the associated infromation for the IMDBID that is tagged with the title you chose in the ListBox.
     private void Movie_List_SelectionChanged(object sender, SelectionChangedEventArgs e)
     {   // Grabs the IMDBID associated to the movie title selected to be used with the second API request.
        var p = Movie_List.SelectedIndex;

        string titleID = structholder[p].IMDBID;

        // Prepares 2nd API URL request to get data for chosen title.
        // Creates a XML Document  to store the xml data that was sent back by the API.
        XmlDocument doc = new XmlDocument();
        doc.Load("http://www.omdbapi.com/?i=" + titleID + "&r=XML");

        // Creates a XML Noedlist to store the values that are going to be associated with the given attribute tag.
        XmlNodeList movieList = doc.GetElementsByTagName("movie");

        var movie = movieList.Item(0);

        Retrievalinfo convertedMovie = new Retrievalinfo()
        {
            title = movie.Attributes["title"].ToString(),
            actors = movie.Attributes["actors"].ToString().Split(',').ToList(),
            genre = movie.Attributes["genre"].ToString(),
            rated = movie.Attributes["rated"].ToString(),
            imdbRating = movie.Attributes["imbdRating"].ToString(),
            released = movie.Attributes["released"].ToString(),
            runtime = movie.Attributes["runtime"].ToString(),
        };

        List<Retrievalinfo> gridInfo = new List<Retrievalinfo>();
        Movie_DataGrid.ItemsSource = gridInfo;

---

---

下面是我想要在DataGrid中顯示的每個變量的類。

namespace WpfApplication3
{
    public class Retrievalinfo
    {
       public Retrievalinfo()
        {
            actors = new List<string>();
        }

        //Creating a list of info objects that will store all returned data for selected title.
        public string title; 
        public List<string> actors; 
        public string genre;
        public string rated;
        public string imdbRating; 
        public string released; 
        public string runtime;

    }

    }

Answer 1

我寫了一篇冗長的aswer，但是，這里有一個快速的樣本，你可以用作參考並自己弄清楚細節。 MVVM不包括在內：D

希望能幫助到你。

代碼隱藏

namespace MyMovies
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;

            Movies = new ObservableCollection<Movie>()
                {
                    new Movie("Lock, Stock and Two Smoking Barrels", 4),
                    new Movie("Life of Brian", 5),
                };

            var addMovieCommand = new RoutedUICommand();
            CommandManager.RegisterClassCommandBinding(typeof(Window),
                new CommandBinding(
                    addMovieCommand,
                    (sender, args) => AddMovie(),
                    (sender, args) => args.CanExecute = true));
            AddMovieCommand = addMovieCommand;
        }

        public ObservableCollection<Movie> Movies { get; set; }

        public ICommand AddMovieCommand { get; set; }

        private void AddMovie()
        {
            Movies.Add(new Movie(Guid.NewGuid().ToString(), 3));
        }
    }

    public class Movie
    {
        public Movie(string name, int stars)
        {
            Name = name;
            Stars = stars;
        }

        public string Name { get; set; }
        public int Stars { get; set; }
    }
}

XAML

<Window x:Class="MyMovies.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <DataGrid 
                HorizontalAlignment="Stretch" 
                VerticalAlignment="Stretch"
                ItemsSource="{Binding Movies}">
            </DataGrid>
            <Button Content="Add movie" Command="{Binding AddMovieCommand}" />
        </StackPanel>
    </Grid>
</Window>

哪個給你

Answer 2

如果我正確理解你的問題，你需要幾件：

• 視圖模型中的ObservableCollection<RetrievalInfo>用於存儲檢索到的數據
• XAML中的Datagrid（或者可能是網格視圖），其項目源綁定到上面的屬性
• 上述控件中的列表示每個數據塊。
• 檢索代碼應修改可觀察集合，以便它們出現在UI上

我很樂意為您不確定如何實施的任何或所有部件提供樣品。

Answer 3

您可以使用以下博客中提供的代碼段讀取xml到對象列表

博客鏈接：

http://danielwylie.me/blog/2010/04/c-convert-xml-to-an-object-or-list-of-an-object

您可以使用以下代碼段分配dataGrid的ItemSource

Movie_DataGrid.ItemsSource = list;
        //here list object from  public static List<T> XmlToObjectList<T>(string xml, string nodePath)  method