ArcGIS API for Silverlight 實現修改地圖上的工程點位置

 #region 處理工程點點擊編輯相關事件        public Graphic editgraphics = null; //待編輯的Graphics圖層        public Graphic oldgraphics = null; //原先Graphics圖層        public Symbol symbolold = null;        /// <summary>        /// 在地圖上點擊編輯點處理事件        /// </summary>        /// <param name="sender"></param>        /// <param name="e"></param>        void myMap_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)        {            ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator();            try            {                if (editgraphics != null)                {                    if (isedit)                    {                        System.Windows.Point screenPoint = e.GetPosition(myMap);                        ESRI.ArcGIS.Client.Geometry.MapPoint mapPoint = myMap.ScreenToMap(screenPoint);                        double x = Math.Round(mapPoint.X, 4);                        double y = Math.Round(mapPoint.Y, 4);                        MapPoint mp = new MapPoint(x, y);                        editgraphics.Geometry = mp;                    }                    else                    {                        editgraphics = oldgraphics;                    }                }                else                {                }            }            catch (Exception)            {                return;            }        }        void graphic_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)        {            Graphic graphic = sender as Graphic;            oldgraphics = graphic; //儲存原先的Graphics圖層            isedit = true;            //選工程點            if (graphic != null)            {                //將上一個圖元還原第一個圖元                if (symbolold != null)                {                    editgraphics.Symbol = symbolold;                }                editgraphics = graphic;                symbolold = editgraphics.Symbol;                editgraphics.Symbol = ((SimpleMarkerSymbol)this.FindName("SimpleSymbol"));                ESRI.ArcGIS.Client.Geometry.MapPoint mp = (MapPoint)graphic.Geometry;                ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator();                mp = WKIDConvert.mercator2lonlat(ESRI.ArcGIS.Client.Geometry.Geometry.NormalizeCentralMeridian(mp) as ESRI.ArcGIS.Client.Geometry.MapPoint);                //開啟Tab進行編輯操作                this.gridTab2.Width = new GridLength(278, GridUnitType.Pixel);                tbTip1.Text = "<<";                string title = graphic.Attributes["NAME"].ToString(); //工程名稱                this.tbProjectName.Text = title;                this.tbLatitute.Text = Math.Round(mp.X, 4).ToString(); //經度                this.tbLongitute.Text = Math.Round(mp.Y, 4).ToString(); //緯度            }        }        void graphic_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)        {            Graphic graphic = sender as Graphic;            editgraphics.Symbol = ((SimpleMarkerSymbol)this.FindName("SimpleSymbol"));            ESRI.ArcGIS.Client.Geometry.MapPoint mp = (MapPoint)graphic.Geometry;            ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator();            mp = WKIDConvert.mercator2lonlat(ESRI.ArcGIS.Client.Geometry.Geometry.NormalizeCentralMeridian(mp) as ESRI.ArcGIS.Client.Geometry.MapPoint);            string title = graphic.Attributes["NAME"].ToString(); //工程名稱            this.tbProjectName.Text = title;            this.tblEditName.Text = title;            this.tbLatitute.Text = Math.Round(mp.X, 4).ToString(); //經度            this.tbLongitute.Text = Math.Round(mp.Y, 4).ToString(); //緯度        }        void graphic_MouseMove(object sender, MouseEventArgs e)        {            Graphic graphic = sender as Graphic;            Grid grid = new Grid();            grid.Background = new SolidColorBrush(Colors.Blue);            TextBlock msg = new TextBlock();            msg.Foreground = new SolidColorBrush(Colors.White);            msg.FontSize = 13;            msg.FontFamily = new FontFamily("Microsoft YaHei");            msg.Text = graphic.Attributes["NAME"].ToString();            grid.Children.Add(msg);            graphic.MapTip = grid;        }        RichTextBox rtb;        void graphic_MouseRightButtonUp(object sender, MouseButtonEventArgs e)        {            if (isedit)            {                //只有在選中點開始編輯後，才可以取消編輯                RTBContextMenu menu = new RTBContextMenu(rtb, this);                menu.Show(e.GetPosition(LayoutRoot));            }            else            {                //什麼也不執行            }        }        void graphic_MouseRightButtonDown(object sender, MouseButtonEventArgs e)        {            e.Handled = true;        }        private void btnModify_Click(object sender, System.Windows.RoutedEventArgs e)        {            try            {                if (string.IsNullOrEmpty(this.tbProjectName.Text))                {                    MessageBox.Show("請先選擇一個工程點！");                }                else                {                    MapPoint mp = (MapPoint)editgraphics.Geometry;                    getDataSoapClient client = new getDataSoapClient();                    client.updagePositionCompleted += new EventHandler<AsyncCompletedEventArgs>(client_updagePositionCompleted);                    MapPoint mapPoint = WKIDConvert.mercator2lonlat(ESRI.ArcGIS.Client.Geometry.Geometry.NormalizeCentralMeridian(mp) as ESRI.ArcGIS.Client.Geometry.MapPoint);                    client.updagePositionAsync(this.tbProjectName.Text, Math.Round(mapPoint.X, 4).ToString(), Math.Round(mapPoint.Y, 4).ToString());                }            }            catch (Exception)            {                MessageBox.Show("請先選擇一個工程點！");            }        }        void client_updagePositionCompleted(object sender, AsyncCompletedEventArgs e)        {            //重新載入資料,這裡需要維持地圖縮放的比例            ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator();            ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = mercator.ToGeographic(editgraphics.Geometry).Extent; //選中點的位置            double expandPercentage = 10;            //加數值後，聚焦（這裡需要注意，進行地理座標和墨卡托座標的轉換）            double widthExpand = (selectedFeatureExtent.Width + 5) * (expandPercentage / 100);            double heightExpand = (selectedFeatureExtent.Height + 5) * (expandPercentage / 100);            ESRI.ArcGIS.Client.Geometry.Envelope displayExtent = new Envelope(WKIDConvert.lonlat2mercator(new MapPoint(selectedFeatureExtent.XMin - (widthExpand / 2), selectedFeatureExtent.YMin - (heightExpand / 2))), WKIDConvert.lonlat2mercator(new MapPoint(selectedFeatureExtent.XMax + (widthExpand / 2), selectedFeatureExtent.YMax + (heightExpand / 2))))            {                SpatialReference = new SpatialReference(102100)            };            MessageBox.Show("工程位置更新成功！");            //重新載入地圖            GetGCInfoByType(tip_Base.CurrentValue);            //重新置文本輸入框為空白            this.tbProjectName.Text = "";            this.tbLatitute.Text = "";            this.tbLongitute.Text = "";        }        #endregion        using System;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Ink;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;using System.Windows.Media.Imaging;using System.Windows.Media.Effects;using ESRI.ArcGIS.Client.FeatureService.Symbols;using ESRI.ArcGIS.Client.Geometry;namespace MapClient.CommonClass{    public class RTBContextMenu : ContextMenu    {        RichTextBox rtb;        GCSiteM _gcSite;        public RTBContextMenu(RichTextBox rtb, GCSiteM gcSite)        {            this.rtb = rtb;            _gcSite = gcSite;        }        //構造功能表按鈕並返回一個FrameworkElement對象        protected override FrameworkElement GetContent()        {            Border border = new Border() { BorderBrush = new SolidColorBrush(Color.FromArgb(255, 167, 171, 176)), BorderThickness = new Thickness(1), Background = new SolidColorBrush(Colors.White) };            border.Effect = new DropShadowEffect() { BlurRadius = 3, Color = Color.FromArgb(255, 230, 227, 236) };            //取消選中            Button tjspButton = new Button() { Height = 22, Margin = new Thickness(0, 0, 0, 0), HorizontalAlignment = HorizontalAlignment.Stretch, VerticalAlignment = VerticalAlignment.Top, HorizontalContentAlignment = HorizontalAlignment.Left };            tjspButton.Style = Application.Current.Resources["ContextMenuButton"] as Style;            tjspButton.Click += new RoutedEventHandler(tjspButton_Click);            tjspButton.Content = "取消選中";            border.Child = tjspButton;            return border;        }        void tjspButton_Click(object sender, RoutedEventArgs e)        {            //恢複原來的顏色            _gcSite.editgraphics.Symbol = new SimpleMarkerSymbol()            {                Color = new SolidColorBrush(ColorRevert.ToColor("#FF0551A7")),                Size = 10,                Style = ESRI.ArcGIS.Client.FeatureService.Symbols.SimpleMarkerSymbol.SimpleMarkerStyle.Circle            };            _gcSite.isedit = false;            //重新載入資料,這裡需要維持地圖縮放的比例            ESRI.ArcGIS.Client.Projection.WebMercator mercator = new ESRI.ArcGIS.Client.Projection.WebMercator();            ESRI.ArcGIS.Client.Geometry.Envelope selectedFeatureExtent = mercator.ToGeographic(_gcSite.oldgraphics.Geometry).Extent; //原先選中點的位置            double expandPercentage = 10;            //加數值後，聚焦（這裡需要注意，進行地理座標和墨卡托座標的轉換）            double widthExpand = (selectedFeatureExtent.Width + 5) * (expandPercentage / 100);            double heightExpand = (selectedFeatureExtent.Height + 5) * (expandPercentage / 100);            ESRI.ArcGIS.Client.Geometry.Envelope displayExt http:// ent = new Envelope(WKIDConvert.lonlat2mercator(new MapPoint(selectedFeatureExtent.XMin - (widthExpand / 2), selectedFeatureExtent.YMin - (heightExpand / 2))), WKIDConvert.lonlat2mercator(new MapPoint(selectedFeatureExtent.XMax + (widthExpand / 2), selectedFeatureExtent.YMax + (heightExpand / 2))))            {                SpatialReference = new SpatialReference(102100)            };            //重新載入地圖            _gcSite.GetGCInfoByType(tip_Base.CurrentValue);            //重新置文本輸入框為空白            _gcSite.tbProjectName.Text = "";            _gcSite.tbLatitute.Text = "";            _gcSite.tbLongitute.Text = "";            Close();        }    }}

以上使用到的右鍵菜單功能ContextMenu.cs類請參考：http://blog.csdn.net/taomanman/article/details/7333612