ArcMobileTool

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.Mobile;

namespace USTC
{
    public class ArcMobileTool
    {
        private ESRI.ArcGIS.Mobile.Map map1;
        public ArcMobileTool(Map map)
        {
            this.map1 = map;
        }

        ///

        /// 得到矩形区域内的包含所选图层的图元
        ///

        /// 所选图层
        /// 矩形左上点
        /// 矩形右下点
        ///
        public FeatureLayerDataTable GetFeature(FeatureLayer featureLayer, Coordinate m_startCoordinate, Coordinate m_endCoordinate)
        {
            Envelope envelope = new Envelope(m_startCoordinate, m_endCoordinate);
            // Retrieves the first layer in the map
            //FeatureLayer featureLayer = map1.MapLayers[0].Layer as FeatureLayer;

            if (featureLayer == null)
                return null;
            // Creates a instance of a query filter. Query filter uses the dragged map rectangle and
            // it will search for all features in layer index = 0, that are contained in this geometry.
            QueryFilter spatialQueryFilter = new QueryFilter(envelope, EsriGeometricRelationship.Contain);

            // Querying the feature layer
            FeatureLayerDataTable featureLayerDataTable = featureLayer.GetDataTable(spatialQueryFilter);

            return featureLayerDataTable;

        }

        public FeatureDataReader GetDataReader(FeatureLayer featureLayer, Coordinate m_startCoordinate, Coordinate m_endCoordinate)
        {
            Envelope envelope = new Envelope(m_startCoordinate, m_endCoordinate);
            // Retrieves the first layer in the map
            //FeatureLayer featureLayer = map1.MapLayers[0].Layer as FeatureLayer;

            if (featureLayer == null)
                return null;
            // Creates a instance of a query filter. Query filter uses the dragged map rectangle and
            // it will search for all features in layer index = 0, that are contained in this geometry.
            QueryFilter spatialQueryFilter = new QueryFilter(envelope, EsriGeometricRelationship.Contain);
            // Querying the feature layer
            FeatureDataReader featureLayerDataTable = featureLayer.GetDataReader(spatialQueryFilter, null);
            return featureLayerDataTable;
            /*
                        *  while (reader.Read())
                             {
                         // Retrieves the feature抯 geometry
                            geometry = reader.GetGeometry();

                          if (geometry != null)
                           // If geometry is valid, the map will rendered once for 100 milliseconds.
                             map1.FlashGeometry(Pens.Red, (SolidBrush)Brushes.Yellow, 15, 100, 1, geometry);
                               }

                        */
        }

      ///

      /// 根据SQL语句的WHERE条件查询
      ///

        /// 所选图层
      /// where条件
      ///
        public FeatureLayerDataTable GetFeature(FeatureLayer featureLayer, string whereClause)
        {
            if (featureLayer == null)
                return null;

            // Creates a where clause string.
            // Use % or * to find a string that contains an a character
            //string whereClause = featureLayer.DisplayColumnName + " like '%a%'";

            // Creates a instance of a query filter. Query filter uses the dragged map rectangle and
            // it will search for all features in layer index = 0, that are contained in this geometry.
            QueryFilter queryFilter = new QueryFilter(whereClause, true);

            // Querying the feature layer
            FeatureLayerDataTable featureLayerDataTable = featureLayer.GetDataTable(queryFilter);

            return featureLayerDataTable;

        }

        public FeatureDataReader GetDataReader(FeatureLayer featureLayer, string whereClause)
        {
            if (featureLayer == null)
                return null;

            QueryFilter queryFilter = new QueryFilter(whereClause, true);

            Geometry geometry = null;

            // Querying the feature layer
            FeatureDataReader reader = featureLayer.GetDataReader(queryFilter, null);
            return reader;
            /*
             *  while (reader.Read())
                  {
              // Retrieves the feature抯 geometry
                 geometry = reader.GetGeometry();

               if (geometry != null)
                // If geometry is valid, the map will rendered once for 100 milliseconds.
                  map1.FlashGeometry(Pens.Red, (SolidBrush)Brushes.Yellow, 15, 100, 1, geometry);
                    }

             */
        }

        ///

        /// 创建点
        ///

        ///
        ///
        public Point CreatePoint(double dx, double dy)
        {
            // Creates a new instance of a Point using some lat/lon coordinates
            // Latitud value
            //double dx = 34.058247;
            // Longitud value
            //double dy = -117.198104;
            // Converts a WSD84 coordinate to a Mobile coordinate
            Coordinate coordinate = map1.MapCache.SpatialReference.Wgs84ToMobileGeometry(dx, dy);
            // Creates a new instance of a point at a given coordinate
            ESRI.ArcGIS.Mobile.Point m_point = new ESRI.ArcGIS.Mobile.Point(coordinate);
            return m_point;
        }

    }
}