ArcGIS for Silverlight 图形的绘制与编辑基本例子

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Symbols;
using ESRI.ArcGIS.Client.Geometry;

namespace SilverlightApplication10
{
/// <summary>
/// ArcGIS for Silverlight 图形的绘制与编辑基本例子
/// </summary>
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();

// 用于编辑
edit = new EditGeometry { Map = map1 };

// 用于绘制
draw = new Draw { FillSymbol = graphicSymbol, Map = map1 };
}

public EditGeometry edit;
public Draw draw;
public Graphic grahpic;

public SimpleFillSymbol graphicSymbol = new SimpleFillSymbol()
{
Fill = new SolidColorBrush(Color.FromArgb(33, 00, 255, 00)),
BorderBrush = new SolidColorBrush(Colors.Green),
BorderThickness = 2
};

private void button1_Click(object sender, RoutedEventArgs e)
{
textBox1.Text += Environment.NewLine + "开始绘制图形 ...";

draw.DrawComplete -= new EventHandler<DrawEventArgs>(draw_DrawComplete);
draw.DrawComplete += new EventHandler<DrawEventArgs>(draw_DrawComplete);
draw.DrawMode = DrawMode.Polygon;
draw.IsEnabled = true;
}

void draw_DrawComplete(object sender, DrawEventArgs e)
{
textBox1.Text += Environment.NewLine + "绘制图形结束 ...";

draw.DrawComplete -= new EventHandler<DrawEventArgs>(draw_DrawComplete);
draw.IsEnabled = false;

// 创建对象
grahpic = new Graphic
{
Geometry = e.Geometry,
Symbol = graphicSymbol
};

// 添加到地图
GraphicsLayer layer1 = map1.Layers["graphicsLayer"] as GraphicsLayer;
layer1.Graphics.Add(grahpic);
}

private void button2_Click(object sender, RoutedEventArgs e)
{
if (grahpic != null)
{
textBox1.Text += Environment.NewLine + "开始编辑图形 ...";

// 添加事件
edit.IsEnabled = true;
edit.StartEdit(grahpic);

edit.GeometryEdit -= new EventHandler<EditGeometry.GeometryEditEventArgs>(edit_GeometryEdit);
edit.GeometryEdit += new EventHandler<EditGeometry.GeometryEditEventArgs>(edit_GeometryEdit);
}
else
{
textBox1.Text += Environment.NewLine + "请先绘制图形！";
}
}

void edit_GeometryEdit(object sender, EditGeometry.GeometryEditEventArgs e)
{
textBox1.Text += Environment.NewLine + "图形编辑类别：" + e.Action;

// 取消编辑或完成编辑时，改变编辑对象的状态
if (e.Action.Equals(EditGeometry.Action.EditCanceled) ||
e.Action.Equals(EditGeometry.Action.EditCompleted))
{
textBox1.Text += Environment.NewLine + "编辑图形结束 ...";

edit.GeometryEdit -= new EventHandler<EditGeometry.GeometryEditEventArgs>(edit_GeometryEdit);

edit.IsEnabled = false;
edit.StopEdit();
}
}
}
}