Windows 手机应用程序 gui 未更新答案

【问题标题】：Windows phone application gui is not updatingWindows 手机应用程序 gui 未更新
【发布时间】：2015-09-13 08:35:07
【问题描述】：

我正在使用 WinRT xaml Toolkit 在 Windows Phone 应用程序中制作一个饼图，但是当我运行此应用程序时，我没有得到 PieChart 的 gui。我还包括了 WinRTXamlToolkit.dll 和 WinRTXamlToolkit.Controls.DataVisualization.dll 作为参考。

这里是 xaml 编码：

<Page
    x:Class="App6.MainPage"
    xmlns:Charting="using:WinRTXamlToolkit.Controls.DataVisualization.Charting"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App6"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">

        <Button x:Name="ButtonRefresh" Content="Refresh" HorizontalAlignment="Left" Margin="100,57,0,0" VerticalAlignment="Top" Click="ButtonRefresh_Click"/>

        <Charting:Chart x:Name="PieChart" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="100,100,0,0" Width="400" Height="400">
        <Charting:PieSeries Margin="0" IndependentValuePath="Name" DependentValuePath="Amount" IsSelectionEnabled="True"/>
        </Charting:Chart>


    </Grid>

</Page>

MainPage.xaml.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;
using WinRTXamlToolkit.Controls.DataVisualization.Charting;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=391641

namespace App6
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainPage : Page
    {
        public class FinancialStuff
        {
            public string Name { get; set; }
            public int Amount { get; set; }
        }

        public MainPage()
        {
            this.InitializeComponent();
            this.Loaded += MainPage_Loaded;
        }

        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            LoadChartContents();
        }

        private void LoadChartContents()
        {
            Random rand = new Random();
            List<FinancialStuff> financialStuffList = new List<FinancialStuff>();
            financialStuffList.Add(new FinancialStuff() { Name = "MSFT", Amount = rand.Next(0, 200) });
            financialStuffList.Add(new FinancialStuff() { Name = "AAPL", Amount = rand.Next(0, 200) });
            financialStuffList.Add(new FinancialStuff() { Name = "GOOG", Amount = rand.Next(0, 200) });
            financialStuffList.Add(new FinancialStuff() { Name = "BBRY", Amount = rand.Next(0, 200) });

            (PieChart.Series[0] as PieSeries).ItemsSource = financialStuffList;

        }

        private void ButtonRefresh_Click(object sender, RoutedEventArgs e)
        {
            LoadChartContents();
        }
    }
}

【问题讨论】：

你在哪里跑？什么版本的 VSTS？您在输出日志中看到任何错误吗？
我使用的是 Visual Studio 12.0
错误：无法将“PieSeries”类型的值添加到“Collection`1”类型的集合或字典中。 c:\users\comsc\documents\visual studio 2013\Projects\App6\App6\MainPage.xaml
见stackoverflow.com/questions/23226022/…

标签： c# xaml windows-phone-8.1 winrt-xaml

【解决方案1】：

我认为该框架中存在相当长一段时间的错误。你可以试试这个吗？

<Charting:Chart x:Name="PieChart" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="100,100,0,0" Width="400" Height="400">
    <charting:Chart.Series>
        <Series:PieSeries
            IndependentValuePath="Name"
            DependentValuePath="Amount"
            IsSelectionEnabled="True" />
    </charting:Chart.Series>
</Charting:Chart>

【讨论】：