AE基础(6)数据查询与选择

  1 using ESRI.ArcGIS.Carto;
  2 using ESRI.ArcGIS.Controls;
  3 using ESRI.ArcGIS.Geodatabase;
  4 using ESRI.ArcGIS.Geometry;
  5 using System;
  6 using System.Collections.Generic;
  7 using System.ComponentModel;
  8 using System.Data;
  9 using System.Drawing;
 10 using System.Linq;
 11 using System.Text;
 12 using System.Threading.Tasks;
 13 using System.Windows.Forms;
 14 
 15 namespace Ch0207
 16 {
 17     public partial class Form1 : Form
 18     {
 19         public Form1()
 20         {
 21             InitializeComponent();
 22         }
 23 
 24         private void Form1_Click(object sender, EventArgs e)
 25         {
 26             loadMapDocument();
 27         }
 28 
 29         int flag = 0;
 30         private void button1_Click(object sender, EventArgs e)
 31         {
 32             //点选
 33             flag = 1;
 34         }
 35 
 36         private void button2_Click(object sender, EventArgs e)
 37         {
 38             //圆选
 39             flag = 2;
 40         }
 41 
 42         private void button3_Click(object sender, EventArgs e)
 43         {//矩形
 44             flag = 3;
 45         }
 46 
 47         private void button4_Click(object sender, EventArgs e)
 48         {//多边形
 49             flag = 4;
 50         }
 51 
 52         private void axMapControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e)
 53         {
 54             axMapControl1.MousePointer = esriControlsMousePointer.esriPointerCrosshair;
 55             IGeometry geometry=null;
 56             switch (flag)
 57             { 
 58                 case 1://点选
 59                     ESRI.ArcGIS.Geometry.Point point = new ESRI.ArcGIS.Geometry.Point();
 60                     point.X = e.mapX;
 61                     point.Y = e.mapY;
 62                     geometry = point as IGeometry;
 63                     break;
 64                 case 2://圆选
 65                     geometry = axMapControl1.TrackCircle();
 66                     break;
 67                 case 3://矩形
 68                     geometry = axMapControl1.TrackRectangle();
 69                     break;
 70                 case 4://多边形选
 71                     geometry=axMapControl1.TrackPolygon();
 72                     break;
 73 
 74             }
 75             axMapControl1.Map.SelectByShape(geometry,null,false);
 76             axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection,null,null);
 77         }
 78         //加载地图文档
 79         private void loadMapDocument()
 80         {
 81             System.Windows.Forms.OpenFileDialog openFileDialog;
 82             openFileDialog = new OpenFileDialog();
 83             openFileDialog.Title = "打开地图文档";
 84             openFileDialog.Filter = "map documents(*.mxd)|*.mxd";
 85             openFileDialog.ShowDialog();
 86             string filePath = openFileDialog.FileName;
 87             if (axMapControl1.CheckMxFile(filePath))
 88             {
 89                 axMapControl1.MousePointer = esriControlsMousePointer.esriPointerHourglass;
 90                 axMapControl1.LoadMxFile(filePath, 0, Type.Missing);
 91                 axMapControl1.MousePointer = esriControlsMousePointer.esriPointerDefault;
 92             }
 93             else
 94             {
 95                 MessageBox.Show(filePath + "不是有效的地图文档");
 96             }
 97         }
 98 
 99         private void button6_Click(object sender, EventArgs e)
100         {
101             //清楚选择
102             IActiveView activeView = axMapControl1.Map as IActiveView;
103             activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection,axMapControl1.get_Layer(0),null);
104             axMapControl1.Map.ClearSelection();
105             activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, axMapControl1.get_Layer(0), null);
106         }
107 
108         private void button5_Click(object sender, EventArgs e)
109         {
110             //名称查询
111             string name = textBox1.Text.Trim();
112             ILayer layer = axMapControl1.get_Layer(0);
113             IFeatureLayer featureLayer = layer as IFeatureLayer;
114             IFeatureClass featureClass = featureLayer.FeatureClass;
115             IQueryFilter queryFilter = new QueryFilter();          
116             IFeature feature = null;//"GNIS_Name" = 'Blue Creek'
117             queryFilter.WhereClause = "GNIS_Name like '%"+name+"%'";
118           
119                 IFeatureCursor featureCursor;
120                 featureCursor = featureClass.Search(queryFilter, true);
121                 feature = featureCursor.NextFeature();
122           
123             if (feature != null)
124             {
125                 axMapControl1.Map.SelectFeature(axMapControl1.get_Layer(0),feature);
126                 axMapControl1.Refresh(esriViewDrawPhase.esriViewGeoSelection,null,null);
127             }
128         }
129 
130 
131      
132     
133     }
134 }