尝试在OS build 17134上的MapControl中设置DataContext会导致崩溃。 [英] Trying to set DataContext in MapControl on OS build 17134 causes a crash.

问题描述

试图设置操作系统版本17134上的MapControl的DataContext导致应用程序崩溃，但相同的代码在运行
OS 16299的计算机上正常工作。

设置"DataContext"时=此"对于MapControl，在提供MapServiceToken值之前，我收到异常：

When setting "DataContext=this" for MapControl before providing the MapServiceToken value, I am getting the exception:

消息： 外部组件抛出异常。

Message: External component has thrown an exception.

来源：  Windows

Source: Windows

StackTrace： 

  ;在Windows.UI.Xaml.FrameworkElement.put_DataContext（对象值）

    at App1.MainPage..ctor（）

    at App1.App1_XamlTypeInfo.XamlTypeInfoProvider.Activate_0_MainPage（）

    at App1.App1_XamlTypeInfo.XamlUserType.ActivateInstance（）

  at Windows.UI.Xaml.FrameworkElement.put_DataContext(Object value)
   at App1.MainPage..ctor()
   at App1.App1_XamlTypeInfo.XamlTypeInfoProvider.Activate_0_MainPage()
   at App1.App1_XamlTypeInfo.XamlUserType.ActivateInstance()

但如果我设置"DataContext = this"，则应用程序正常运行提供MapServiceToken值后。

But the application is working fine if I am setting "DataContext=this" after providing the MapServiceToken value.

此问题在OS build 17134中重现。

This issue is reproduced in OS build 17134.

相同的代码在OS build 16299中正常工作。

The same code is working fine in OS build 16299.

这是我的应用程序代码：

This is my application code:

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;

namespace App1
{
    public sealed partial class MainPage : Page
    {
        public string ServiceToken
        {
            get { return (string)GetValue(ServiceTokenProperty); }
            set { SetValue(ServiceTokenProperty, value); }
        }

        public static readonly DependencyProperty ServiceTokenProperty = DependencyProperty.Register(
            "ServiceToken",
            typeof(string),
            typeof(MainPage),
            new PropertyMetadata(string.Empty));

        private string mapKey = "__BINGMAPSPROVIDEDKEY__";
        public MainPage()
        {
            this.InitializeComponent();
            DataContext = this;
            ServiceToken = mapKey;
        }
    }
}

这是同一页面的xaml代码，"MainPage" ：

This is the xaml code for the same page, "MainPage" :

<Page
    x:Class="App1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App1"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    xmlns:maps="using:Windows.UI.Xaml.Controls.Maps">
    <Grid>
        <maps:MapControl
            MapServiceToken="{Binding ServiceToken}"
            />
    </Grid>
</Page>

为什么这个问题出现在图片中并且有操作系统更新？

Why this issue came in picture with the OS update?

Rohit Garg。

Rohit Garg.

推荐答案

您使用的是Bing地图吗？为Windows UWP应用程序创建的密钥？创建用于Web控件的密钥将不起作用。

Are you using a Bing maps key that was created for use with Windows UWP applications? Keys created for use with the web control will not work.

这篇关于尝试在OS build 17134上的MapControl中设置DataContext会导致崩溃。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！