C# 检查是否已单击多边形

您好，我已使用以下方法将多边形添加到地图：

//Creating a Polygon
Polygon MyPolygon = new Polygon(); 
MyPolygon.Points.Add(new Point(0, 0));
MyPolygon.Points.Add(new Point(95, 0));
MyPolygon.Points.Add(new Point(95, 35));
MyPolygon.Points.Add(new Point(10, 35));
MyPolygon.Points.Add(new Point(0, 75)); // 

MyPolygon.Stroke = new SolidColorBrush(Colors.Black);
MyPolygon.Fill = new SolidColorBrush(Colors.Black);

//Creating a MapOverlay and adding the Grid to it.
MapOverlay MyOverlay = new MapOverlay();
MyOverlay.Content = MyPolygon;
MyOverlay.GeoCoordinate = 
new GeoCoordinate(coordinate.Latitude,     coordinate.Longitude);
MyOverlay.PositionOrigin = new Point(0, 1.0);

//Creating a MapLayer and adding the MapOverlay to it            
mapLayer.Add(MyOverlay);

MyPolygon.MouseLeftButtonUp += new MouseButtonEventHandler(MyPolygon_Click);

---

我需要检查用户是否单击此多边形。有人能帮我吗？

假设是一个商店应用程序，下面的代码是一个快速而肮脏的示例，它将做出反应，并在您单击或触摸屏幕的位置添加一个文本块

XAML

代码隐藏

using Windows.Foundation;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.UI.Xaml.Shapes;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace StoreApp_PolyTest
{
    /// <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 MainPage()
        {
            this.InitializeComponent();

        }

        private void Canvas_Loaded(object sender, RoutedEventArgs e)
        {
            Polygon MyPolygon = new Polygon();
            MyPolygon.Points.Add(new Point(0, 0));
            MyPolygon.Points.Add(new Point(95, 0));
            MyPolygon.Points.Add(new Point(95, 35));
            MyPolygon.Points.Add(new Point(10, 35));
            MyPolygon.Points.Add(new Point(0, 75)); // 

            MyPolygon.Stroke = new SolidColorBrush(Colors.Blue);
            MyPolygon.Fill = new SolidColorBrush(Colors.Blue);

            canvas.Children.Add(MyPolygon);

            MyPolygon.PointerPressed += MyPolygon_PointerPressed;
        }

        void MyPolygon_PointerPressed(object sender, PointerRoutedEventArgs e)
        {
            TextBlock nameText = new TextBlock() {Text="1234"};
            var point = e.GetCurrentPoint(this);
            Canvas.SetLeft(nameText, point.Position.X);
            Canvas.SetTop(nameText, point.Position.Y);
            canvas.Children.Add(nameText);
        }
    }
}

<代码>使用Windows .Fund； 使用Windows.UI； 使用Windows.UI.Xaml； 使用Windows.UI.Xaml.Controls； 使用Windows.UI.Xaml.Input； 使用Windows.UI.Xaml.Media； 使用Windows.UI.Xaml.Navigation； 使用Windows.UI.Xaml.Shapes； //空白页项模板被记录在http://go.microsoft.com/fwlink/?LinkId=234238 名称空间StoreApp_PolyTest { /// ///可以单独使用或在框架内导航到的空页。 /// 公共密封部分类主页面：第页 { 公共主页（） { this.InitializeComponent（）； } 已加载私有无效画布（对象发送方、路由目标） { 多边形MyPolygon=新多边形（）； MyPolygon.Points.Add（新点（0,0））； MyPolygon.Points.Add（新点（95,0））； MyPolygon.Points.Add（新点（95,35））； MyPolygon.Points.Add（新点（10,35））； MyPolygon.Points.Add（新点（0,75））；// MyPolygon.Stroke=新的SolidColorBrush（Colors.Blue）； MyPolygon.Fill=新的SolidColorBrush（Colors.Blue）； canvas.Children.Add（MyPolygon）； MyPolygon.PointerPressed+=MyPolygon_PointerPressed； } void MyPolygon_PointerPressed（对象发送器，PointerRoutedEventArgs e） { TextBlock name Text=new TextBlock（）{Text=“1234”}； var point=e.GetCurrentPoint（本）； Canvas.SetLeft（nameText，point.Position.X）； Canvas.SetTop（nameText，point.Position.Y）； canvas.Children.Add（nameText）； } } }

---

您是否尝试将MouseUp Eventhandler添加到多边形中？是的。我编辑了我的问题以显示这一点，但单击多边形时没有发生任何情况。您使用的是什么框架？WPF、Windows应用商店或？您的单击事件仅创建一个文本块，而不显示它。因此，可能偶数被触发，但没有显示。如何在屏幕上显示文本块？

<Page
    x:Class="StoreApp_PolyTest.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:StoreApp_PolyTest"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Canvas 
        Name="canvas"
        Background="{StaticResource ApplicationPageBackgroundThemeBrush}"
        Loaded="Canvas_Loaded">

    </Canvas>
</Page>

using Windows.Foundation;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using Windows.UI.Xaml.Shapes;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace StoreApp_PolyTest
{
    /// <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 MainPage()
        {
            this.InitializeComponent();

        }

        private void Canvas_Loaded(object sender, RoutedEventArgs e)
        {
            Polygon MyPolygon = new Polygon();
            MyPolygon.Points.Add(new Point(0, 0));
            MyPolygon.Points.Add(new Point(95, 0));
            MyPolygon.Points.Add(new Point(95, 35));
            MyPolygon.Points.Add(new Point(10, 35));
            MyPolygon.Points.Add(new Point(0, 75)); // 

            MyPolygon.Stroke = new SolidColorBrush(Colors.Blue);
            MyPolygon.Fill = new SolidColorBrush(Colors.Blue);

            canvas.Children.Add(MyPolygon);

            MyPolygon.PointerPressed += MyPolygon_PointerPressed;
        }

        void MyPolygon_PointerPressed(object sender, PointerRoutedEventArgs e)
        {
            TextBlock nameText = new TextBlock() {Text="1234"};
            var point = e.GetCurrentPoint(this);
            Canvas.SetLeft(nameText, point.Position.X);
            Canvas.SetTop(nameText, point.Position.Y);
            canvas.Children.Add(nameText);
        }
    }
}