我创建了一个可变大小的网格并添加了一些示例数据。现在想要点击按钮添加项目。我不知道怎么做，因为grid.items.add（）不起作用。
这是我的代码：
<Page.Resources>
<common:TVSeriesTemplateSelector x:Key="TVSeriesTemplateSelector"
TVSeriesLargeSizeTemplate="{StaticResource TVSeriesLargeSizeTemplate}"
TVSeriesMediumSizeTemplate="{StaticResource TVSeriesMediumSizeTemplate}"
TVSeriesSmallSizeTemplate="{StaticResource TVSeriesSmallSizeTemplate}"/>
</Page.Resources>
<Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
<local:VariableSizedGridView x:Name="TVSeriesGridView" Margin="0,110,0,0" ItemTemplateSelector="{StaticResource TVSeriesTemplateSelector}" >
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid Orientation="Vertical" ItemHeight="200" ItemWidth="200" Tapped="gotopage" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</local:VariableSizedGridView>
<Grid Margin="0,0,0,0">
<Button x:Name="PostButton" Content="Post" HorizontalAlignment="Right" VerticalAlignment="Top">
<Button.Flyout>
<Flyout ScrollViewer.ZoomMode="Enabled">
<StackPanel Width="400">
<TextBlock Style="{StaticResource BaseTextBlockStyle}">
Write Your Post
</TextBlock>
<TextBox TextWrapping="Wrap" Text="TextBox" Width="400" />
<Button Margin="0,5,0,0" HorizontalAlignment="Center" Click="Button_Click_1">
Share
</Button>
<ComboBox HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" IsDropDownOpen="True" x:Name="colorselection" >
<ComboBoxItem Content="Green" IsSelected="True" />
</ComboBox>
</StackPanel>
</Flyout>
</Button.Flyout>
</Button>
</Grid>
</Grid>
</Page>
落后于cs
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238
namespace TemplateSelector_App
{
/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// </summary>
public sealed partial class MainPage : Page
{
List<TVSeries> tvSeriesList = new List<TVSeries>();
List<TVSeries> tvSeriesList1 = new List<TVSeries>();
public MainPage()
{
this.InitializeComponent();
this.Loaded += MainPage_Loaded;
}
public void MainPage_Loaded(object sender, RoutedEventArgs e)
{
tvSeriesList.Add(new TVSeries() { Name = "Supernatural", Seasons = "9 Seasons", Genre = "Supernatural Drama", Width = 2, Height = 2, Image = "http://images2.fanpop.com/images/photos/2700000/Supernatural-supernatural-2784812-1280-960.jpg", Description = "Supernatural is an American supernatural drama television series, created by Eric Kripke, which was first broadcast on September 13, 2005, on The WB, and is now part of The CW's lineup. Starring Jared Padalecki as Sam Winchester, and Jensen Ackles as Dean Winchester, the series follows these two brothers as they hunt demons, ghosts, monsters and other supernatural beings in the world. The series is produced by Warner Bros. Television, in association with Wonderland Sound and Vision. The current executive producers are Eric Kripke, McG, and Robert Singer." });
tvSeriesList.Add(new TVSeries() { Name = "Fringe", Seasons = "5 Seasons", Genre = "Science Fiction", Width = 2, Height = 1, Image = "http://tvafterdarkonline.com/wp-content/uploads/2012/06/FRINGE-Sunday-Hall-H-WBSDCC-2012.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "Chuck", Seasons = "5 Seasons", Genre = "Action Comedy", Width = 2, Height = 1, Image = "http://zinemaniacos.files.wordpress.com/2012/06/chuck.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "Falling Skies", Width = 1, Height = 1, Image = "http://2.bp.blogspot.com/-cVgdAr1EFQA/TgJpY5cciTI/AAAAAAAABDg/f4MetFkSeAo/s1600/tv_falling_skies04.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "Revolution", Width = 1, Height = 1, Seasons = "2 Seasons", Image = "http://www.hdwallpapers.in/walls/revolution_tv_series-wide.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "Battlestar Galactica", Seasons = "4 Seasons", Genre = "Science Fiction", Width = 2, Height = 1, Image = "http://image.allmusic.com/00/agg/cov200/drg200/g283/g28358peyd2.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "House MD", Seasons = "8 Seasons", Genre = "Dramedy, Mystery", Width = 2, Height = 2, Image = "http://www.kotusozluk.com/img/2011/04/house-md_18373.jpg", Description = "House (also known as House, M.D.) was an American television medical drama that originally ran on the Fox network for eight seasons, from November 16, 2004 to May 21, 2012. The show's main character is Dr. Gregory House (Hugh Laurie), a drug-addicted, unconventional, misanthropic medical genius who leads a team of diagnosticians at the fictional Princeton–Plainsboro Teaching Hospital (PPTH) in New Jersey." });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "red" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/20enter code here12/02/us-sherlock-dvd-cmyk.jpg", color1 = "red" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "red" });
tvSeriesList.Add(new TVSeries() { Name = "Revolution", Width = 1, Height = 1, Seasons = "2 Seasons", Image = "http://www.hdwallpapers.in/walls/revolution_tv_series-wide.jpg" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "#FF355991" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "#FF355991" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "#FF355991" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "#FF355991" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "red" });
tvSeriesList.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = "red" });
tvSeriesList.Add(new TVSeries() { Name = "Supernatural", Seasons = "9 Seasons", Genre = "Supernatural Drama", Width = 2, Height = 2, Image = "", Description = "Supernatural is an American supernatural drama television series, created by Eric Kripke, which was first broadcast on September 13, 2005, on The WB, and is now part of The CW's lineup. Starring Jared Padalecki as Sam Winchester, and Jensen Ackles as Dean Winchester, the series follows these two brothers as they hunt demons, ghosts, monsters and other supernatural beings in the world. The series is produced by Warner Bros. Television, in association with Wonderland Sound and Vision. The current executive producers are Eric Kripke, McG, and Robert Singer." });
TVSeriesGridView.ItemsSource = tvSeriesList;
}
private void gotopage(object sender, TappedRoutedEventArgs e)
{
Frame.Navigate(typeof(ItemDetailPage1));
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
string colorselected = colorselection.SelectedIndex.ToString();
string colorselected1 = null;
if (colorselected.Equals("0"))
{
colorselected1 = "green";
}
tvSeriesList1.Add(new TVSeries() { Name = "Sherlock", Seasons = "2 Seasons", Genre = "Crime Drama", Width = 2, Height = 1, Image = "http://skyethelimit.files.wordpress.com/2012/02/us-sherlock-dvd-cmyk.jpg", color1 = colorselected1 });
TVSeriesGridView.Items.Add("item");
PostButton.Flyout.Hide();
}
}
public class TVSeries
{
public string Name { get; set; }
public string Description { get; set; }
public string Genre { get; set; }
public string Image { get; set; }
public string Seasons { get; set; }
public int Width { get; set; }
public int Height { get; set; }
public string color1 { get; set; }
}
}
答案 0 :(得分：0)
替换：
List<TVSeries> tvSeriesList = new List<TVSeries>();
List<TVSeries> tvSeriesList1 = new List<TVSeries>();
使用：
ObservableCollection<TVSeries> tvSeriesList = new ObservableCollection<TVSeries>();
ObservableCollection<TVSeries> tvSeriesList1 = new ObservableCollection<TVSeries>();
此行代码将在此之后运行良好：
tvSeriesList1.Add(new TVSeries() { Name = "Sherlock", ...);
你根本不需要这一行：
TVSeriesGridView.Items.Add("item");
这是因为ObservableCollection正在观察更改并将通知您的网格，列表集合没有这样的能力。