Search相关代码
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///////////////////////////////////////////////////////////////////////////////
//
// (c) Pitney Bowes MapInfo Corporation, 2008. All rights reserved.
//
// The source code below is provided as sample code only. The end user of the
// Licensed Product that contains this code may use the code below for
// development purposes. This software is provided by Pitney Bowes MapInfo
// "as is" and any express or implied warranties, including, but not limited
// to, the implied warranties of merchantability and fitness for a particular
// purpose are disclaimed. In no event shall Pitney Bowes MapInfo be liable
// for any direct, indirect, incidental, special, exemplary, or consequential
// damages (including, but not limited to, procurement of substitute goods or
// services; loss of use, data or profits; or business interruption) however
// caused and whether in contract, strict liability, or tort (including
// negligence) arising in any way out of the use of this software, even if
// advised of the possibility of such damage.
//
///////////////////////////////////////////////////////////////////////////////
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Reflection;
using MapInfo.Data;
using MapInfo.Engine;
using MapInfo.Geometry;
using MapInfo.Mapping;
using MapInfo.Styles;
namespace Search
{
/// <summary>
/// Summary description for MapForm1.
/// </summary>
public class MapForm1 : System.Windows.Forms.Form
{
private MapInfo.Windows.Controls.MapControl mapControl1;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.MainMenu mainMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuItem11;
private System.Windows.Forms.MenuItem menuItem19;
private System.Windows.Forms.MenuItem menuFileExit;
private System.Windows.Forms.MenuItem menuItemMapSearchWithinScreenRect;
private System.Windows.Forms.MenuItem menuItemMapSearchWithinScreenRadius;
private System.Windows.Forms.MenuItem menuItemMapSearchNearest;
private System.ComponentModel.Container components = null;
private Map _map=null; // will be set to map from mapcontrol
private Catalog _catalog=Session.Current.Catalog;
private Selection _selection=Session.Current.Selections.DefaultSelection;
private System.Windows.Forms.MenuItem menuItemSearchWhere;
private System.Windows.Forms.MenuItem menuItemSearchWithinFeature;
private System.Windows.Forms.MenuItem menuItemSearchWithinRect;
private System.Windows.Forms.MenuItem menuItemSearchIntersectsFeature;
private System.Windows.Forms.MenuItem menuItemSearchWithinDistance;
private System.Windows.Forms.MenuItem menuItemSearchNearest;
private System.Windows.Forms.MenuItem menuItemSqlExpressionFilter;
private System.Windows.Forms.MenuItem menuItemCustomProcessor;
private System.Windows.Forms.MenuItem menuItemSearchMultipleTables;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem menuItem5;
private System.Windows.Forms.MenuItem menuItemLogicalFilter;
private System.Windows.Forms.MenuItem menuItemCustomQueryFilter;
private System.Windows.Forms.MenuItem menuItemIntersectFeature;
private System.Windows.Forms.MenuItem menuItemContainsFilter;
private System.Windows.Forms.MenuItem menuItemSetColumns;
private System.Windows.Forms.MenuItem menuItem7;
private MapInfo.Windows.Controls.MapToolBar mapToolBar1;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonOpenTable;
private System.Windows.Forms.ToolBarButton toolBarButtonSeparator;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonSelect;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonZoomIn;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonZoomOut;
private MapInfo.Windows.Controls.MapToolBarButton mapToolBarButtonPan;
private Table _tempTable=null;
public MapForm1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
// Listen to some map events
mapControl1.Map.ViewChangedEvent += new ViewChangedEventHandler(Map_ViewChanged);
_map = mapControl1.Map;
// Assign the Pan tool to the middle mouse button
mapControl1.Tools.MiddleButtonTool = "Pan";
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
_map=null;
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.mapControl1 = new MapInfo.Windows.Controls.MapControl();
this.panel1 = new System.Windows.Forms.Panel();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.menuItem19 = new System.Windows.Forms.MenuItem();
this.menuFileExit = new System.Windows.Forms.MenuItem();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItemSearchWhere = new System.Windows.Forms.MenuItem();
this.menuItemSearchWithinFeature = new System.Windows.Forms.MenuItem();
this.menuItemSearchWithinRect = new System.Windows.Forms.MenuItem();
this.menuItemSearchIntersectsFeature = new System.Windows.Forms.MenuItem();
this.menuItemSearchWithinDistance = new System.Windows.Forms.MenuItem();
this.menuItemSearchNearest = new System.Windows.Forms.MenuItem();
this.menuItem4 = new System.Windows.Forms.MenuItem();
this.menuItemSearchMultipleTables = new System.Windows.Forms.MenuItem();
this.menuItem11 = new System.Windows.Forms.MenuItem();
this.menuItemCustomProcessor = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.menuItemMapSearchWithinScreenRect = new System.Windows.Forms.MenuItem();
this.menuItemMapSearchWithinScreenRadius = new System.Windows.Forms.MenuItem();
this.menuItemMapSearchNearest = new System.Windows.Forms.MenuItem();
this.menuItem5 = new System.Windows.Forms.MenuItem();
this.menuItemSqlExpressionFilter = new System.Windows.Forms.MenuItem();
this.menuItemContainsFilter = new System.Windows.Forms.MenuItem();
this.menuItemIntersectFeature = new System.Windows.Forms.MenuItem();
this.menuItemCustomQueryFilter = new System.Windows.Forms.MenuItem();
this.menuItemLogicalFilter = new System.Windows.Forms.MenuItem();
this.menuItem7 = new System.Windows.Forms.MenuItem();
this.menuItemSetColumns = new System.Windows.Forms.MenuItem();
this.mapToolBar1 = new MapInfo.Windows.Controls.MapToolBar();
this.mapToolBarButtonOpenTable = new MapInfo.Windows.Controls.MapToolBarButton();
this.toolBarButtonSeparator = new System.Windows.Forms.ToolBarButton();
this.mapToolBarButtonSelect = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonZoomIn = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonZoomOut = new MapInfo.Windows.Controls.MapToolBarButton();
this.mapToolBarButtonPan = new MapInfo.Windows.Controls.MapToolBarButton();
this.panel1.SuspendLayout();
this.SuspendLayout();
//
// mapControl1
//
this.mapControl1.Dock = System.Windows.Forms.DockStyle.Fill;
this.mapControl1.Location = new System.Drawing.Point(0, 0);
this.mapControl1.Name = "mapControl1";
this.mapControl1.Size = new System.Drawing.Size(394, 244);
this.mapControl1.TabIndex = 0;
this.mapControl1.Text = "mapControl1";
this.mapControl1.Tools.LeftButtonTool = null;
this.mapControl1.Tools.MiddleButtonTool = null;
this.mapControl1.Tools.RightButtonTool = null;
//
// panel1
//
this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.panel1.Controls.Add(this.mapControl1);
this.panel1.Location = new System.Drawing.Point(4, 32);
this.panel1.Name = "panel1";
this.panel1.Size = new System.Drawing.Size(398, 248);
this.panel1.TabIndex = 1;
//
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 286);
this.statusBar1.Name = "statusBar1";
this.statusBar1.Size = new System.Drawing.Size(406, 19);
this.statusBar1.TabIndex = 2;
//
// mainMenu1
//
this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem19,
this.menuItem1,
this.menuItem2,
this.menuItem5});
//
// menuItem19
//
this.menuItem19.Index = 0;
this.menuItem19.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuFileExit});
this.menuItem19.Text = "&File";
//
// menuFileExit
//
this.menuFileExit.Index = 0;
this.menuFileExit.Text = "E&xit";
this.menuFileExit.Click += new System.EventHandler(this.menuFileExit_Click);
//
// menuItem1
//
this.menuItem1.Index = 1;
this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItemSearchWhere,
this.menuItemSearchWithinFeature,
this.menuItemSearchWithinRect,
this.menuItemSearchIntersectsFeature,
this.menuItemSearchWithinDistance,
this.menuItemSearchNearest,
this.menuItem4,
this.menuItemSearchMultipleTables,
this.menuItem11,
this.menuItemCustomProcessor});
this.menuItem1.Text = "Search";
//
// menuItemSearchWhere
//
this.menuItemSearchWhere.Index = 0;
this.menuItemSearchWhere.Text = "SearchWhere";
this.menuItemSearchWhere.Click += new System.EventHandler(this.menuItemSearchWhere_Click);
//
// menuItemSearchWithinFeature
//
this.menuItemSearchWithinFeature.Index = 1;
this.menuItemSearchWithinFeature.Text = "SearchWithinGeometry";
this.menuItemSearchWithinFeature.Click += new System.EventHandler(this.menuItemSearchWithinGeometry_Click);
//
// menuItemSearchWithinRect
//
this.menuItemSearchWithinRect.Index = 2;
this.menuItemSearchWithinRect.Text = "SearchWithinRect";
this.menuItemSearchWithinRect.Click += new System.EventHandler(this.menuItemSearchWithinRect_Click);
//
// menuItemSearchIntersectsFeature
//
this.menuItemSearchIntersectsFeature.Index = 3;
this.menuItemSearchIntersectsFeature.Text = "SearchIntersectsFeature";
this.menuItemSearchIntersectsFeature.Click += new System.EventHandler(this.menuItemSearchIntersectsFeature_Click);
//
// menuItemSearchWithinDistance
//
this.menuItemSearchWithinDistance.Index = 4;
this.menuItemSearchWithinDistance.Text = "SearchWithinDistance";
this.menuItemSearchWithinDistance.Click += new System.EventHandler(this.menuItemSearchWithinDistance_Click);
//
// menuItemSearchNearest
//
this.menuItemSearchNearest.Index = 5;
this.menuItemSearchNearest.Text = "SearchNearest";
this.menuItemSearchNearest.Click += new System.EventHandler(this.menuItemSearchNearest_Click);
//
// menuItem4
//
this.menuItem4.Index = 6;
this.menuItem4.Text = "-";
//
// menuItemSearchMultipleTables
//
this.menuItemSearchMultipleTables.Index = 7;
this.menuItemSearchMultipleTables.Text = "Search Multiple Tables";
this.menuItemSearchMultipleTables.Click += new System.EventHandler(this.menuItemSearchMultipleTables_Click);
//
// menuItem11
//
this.menuItem11.Index = 8;
this.menuItem11.Text = "-";
//
// menuItemCustomProcessor
//
this.menuItemCustomProcessor.Index = 9;
this.menuItemCustomProcessor.Text = "CustomSearchResultProcessor";
this.menuItemCustomProcessor.Click += new System.EventHandler(this.menuItemCustomProcessor_Click);
//
// menuItem2
//
this.menuItem2.Index = 2;
this.menuItem2.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItemMapSearchWithinScreenRect,
this.menuItemMapSearchWithinScreenRadius,
this.menuItemMapSearchNearest});
this.menuItem2.Text = "MapSearch";
//
// menuItemMapSearchWithinScreenRect
//
this.menuItemMapSearchWithinScreenRect.Index = 0;
this.menuItemMapSearchWithinScreenRect.Text = "SearchWithinScreenRect";
this.menuItemMapSearchWithinScreenRect.Click += new System.EventHandler(this.menuItemMapSearchWithinScreenRect_Click);
//
// menuItemMapSearchWithinScreenRadius
//
this.menuItemMapSearchWithinScreenRadius.Index = 1;
this.menuItemMapSearchWithinScreenRadius.Text = "SearchWithinScreenRadius";
this.menuItemMapSearchWithinScreenRadius.Click += new System.EventHandler(this.menuItemMapSearchWithinScreenRadius_Click);
//
// menuItemMapSearchNearest
//
this.menuItemMapSearchNearest.Index = 2;
this.menuItemMapSearchNearest.Text = "SearchNearest";
this.menuItemMapSearchNearest.Click += new System.EventHandler(this.menuItemMapSearchNearest_Click);
//
// menuItem5
//
this.menuItem5.Index = 3;
this.menuItem5.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItemSqlExpressionFilter,
this.menuItemContainsFilter,
this.menuItemIntersectFeature,
this.menuItemCustomQueryFilter,
this.menuItemLogicalFilter,
this.menuItem7,
this.menuItemSetColumns});
this.menuItem5.Text = "QueryDefinition";
//
// menuItemSqlExpressionFilter
//
this.menuItemSqlExpressionFilter.Index = 0;
this.menuItemSqlExpressionFilter.Text = "SqlExpressionFilter";
this.menuItemSqlExpressionFilter.Click += new System.EventHandler(this.menuItemSqlExpressionFilter_Click);
//
// menuItemContainsFilter
//
this.menuItemContainsFilter.Index = 1;
this.menuItemContainsFilter.Text = "ContainsFilter";
this.menuItemContainsFilter.Click += new System.EventHandler(this.menuItemContainsFilter_Click);
//
// menuItemIntersectFeature
//
this.menuItemIntersectFeature.Index = 2;
this.menuItemIntersectFeature.Text = "IntersectFilter";
this.menuItemIntersectFeature.Click += new System.EventHandler(this.menuItemIntersectFeature_Click);
//
// menuItemCustomQueryFilter
//
this.menuItemCustomQueryFilter.Index = 3;
this.menuItemCustomQueryFilter.Text = "CustomQueryFilter";
this.menuItemCustomQueryFilter.Click += new System.EventHandler(this.menuItemCustomQueryFilter_Click);
//
// menuItemLogicalFilter
//
this.menuItemLogicalFilter.Index = 4;
this.menuItemLogicalFilter.Text = "LogicalFilter";
this.menuItemLogicalFilter.Click += new System.EventHandler(this.menuItemLogicalFilter_Click);
//
// menuItem7
//
this.menuItem7.Index = 5;
this.menuItem7.Text = "-";
//
// menuItemSetColumns
//
this.menuItemSetColumns.Index = 6;
this.menuItemSetColumns.Text = "Setting Columns";
this.menuItemSetColumns.Click += new System.EventHandler(this.menuItemSetColumns_Click);
//
// mapToolBar1
//
this.mapToolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
this.mapToolBarButtonOpenTable,
this.toolBarButtonSeparator,
this.mapToolBarButtonSelect,
this.mapToolBarButtonZoomIn,
this.mapToolBarButtonZoomOut,
this.mapToolBarButtonPan});
this.mapToolBar1.ButtonSize = new System.Drawing.Size(25, 22);
this.mapToolBar1.Divider = false;
this.mapToolBar1.Dock = System.Windows.Forms.DockStyle.None;
this.mapToolBar1.DropDownArrows = true;
this.mapToolBar1.Location = new System.Drawing.Point(8, 0);
this.mapToolBar1.MapControl = this.mapControl1;
this.mapToolBar1.Name = "mapToolBar1";
this.mapToolBar1.ShowToolTips = true;
this.mapToolBar1.Size = new System.Drawing.Size(160, 26);
this.mapToolBar1.TabIndex = 3;
//
// mapToolBarButtonOpenTable
//
this.mapToolBarButtonOpenTable.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.OpenTable;
this.mapToolBarButtonOpenTable.ToolTipText = "Open Table";
//
// toolBarButtonSeparator
//
this.toolBarButtonSeparator.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// mapToolBarButtonSelect
//
this.mapToolBarButtonSelect.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.Select;
this.mapToolBarButtonSelect.ToolTipText = "Select";
//
// mapToolBarButtonZoomIn
//
this.mapToolBarButtonZoomIn.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.ZoomIn;
this.mapToolBarButtonZoomIn.ToolTipText = "Zoom-in";
//
// mapToolBarButtonZoomOut
//
this.mapToolBarButtonZoomOut.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.ZoomOut;
this.mapToolBarButtonZoomOut.ToolTipText = "Zoom-out";
//
// mapToolBarButtonPan
//
this.mapToolBarButtonPan.ButtonType = MapInfo.Windows.Controls.MapToolButtonType.Pan;
this.mapToolBarButtonPan.ToolTipText = "Pan";
//
// MapForm1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(406, 305);
this.Controls.Add(this.mapToolBar1);
this.Controls.Add(this.statusBar1);
this.Controls.Add(this.panel1);
this.Menu = this.mainMenu1;
this.MinimumSize = new System.Drawing.Size(250, 200);
this.Name = "MapForm1";
this.Text = "Search Sample";
this.Load += new System.EventHandler(this.MapForm1_Load);
this.panel1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new MapForm1());
}
// Handler function called when the active map's view changes
private void Map_ViewChanged(object o, ViewChangedEventArgs e)
{
// Get the map
MapInfo.Mapping.Map map = (MapInfo.Mapping.Map) o;
// Display the zoom level
Double dblZoom = System.Convert.ToDouble(String.Format("{0:E2}", mapControl1.Map.Zoom.Value));
statusBar1.Text = "Zoom: " + dblZoom.ToString() + " " + mapControl1.Map.Zoom.Unit.ToString();
}
private void MapForm1_Load(object sender, System.EventArgs e)
{
// Set table search path to value sampledatasearch registry key
// if not found, then just use the app's current directory
Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.LocalMachine.CreateSubKey(@"SOFTWARE\MapInfo\MapXtreme\6.8.0");
try
{
string s = (string)key.GetValue("SampleDataSearchPath");
if (s != null && s.Length > 0)
{
if (s.EndsWith("\\")==false)
{
s += "\\";
}
}
else
{
s = Environment.CurrentDirectory;
}
key.Close();
MapInfo.Engine.Session.Current.TableSearchPath.Path = s;
// load some layers, set csys and default view
_map.Load(new MapTableLoader( "usa.tab", "mexico.tab", "usa_caps.tab", "uscty_1k.tab", "grid15.tab"));
}
catch(Exception ex)
{
MessageBox.Show(this, "Unable to load tables. Sample Data may not be installed." + Environment.NewLine + ex.Message);
this.Close();
return;
}
_map.SetDisplayCoordSys((_map.Layers["grid15"] as FeatureLayer).CoordSys);
FeatureLayer lyr = _map.Layers["uscty_1k"] as FeatureLayer;
_map.SetView(lyr.DefaultBounds, lyr.CoordSys);
// create and add temp layer
TableInfo ti = TableInfoFactory.CreateTemp("temp"); // create tableinfo with just obj and style cols
_tempTable = _catalog.CreateTable(ti);
_map.Layers.Insert(0, new FeatureLayer(_tempTable));
}
private void menuFileExit_Click(object sender, System.EventArgs e)
{
Application.Exit();
}
private void ShowSearchGeometry(FeatureGeometry g)
{
ShowSearchGeometry(g, true);
}
// add geometry to temp layer with hollow style
private void ShowSearchGeometry(FeatureGeometry g, bool clear)
{
if (clear)
{
// first clear out any other geometries from table
(_tempTable as IFeatureCollection).Clear();
}
Style s=null;
if (g is IGenericSurface) // closed geometry, use area style
{
s = new AreaStyle(new SimpleLineStyle(new LineWidth(2, LineWidthUnit.Pixel), 2, Color.Red, false), new SimpleInterior(0));
}
else if (g is MapInfo.Geometry.Point)
{
s = new SimpleVectorPointStyle(34, Color.Red, 18);
}
Feature f = new Feature(g, s);
// Add feature to temp table
_tempTable.InsertFeature(f);
}
// select features in feature collection
private void SelectFeatureCollection(IResultSetFeatureCollection fc)
{
// force map to update
mapControl1.Update();
_selection.Clear();
_selection.Add(fc);
}
// this is similar to searchwithinrect, but the rect constructed is a screen rectangle
// as opposed to a map rectangle (try both and see the difference)
private void menuItemMapSearchWithinScreenRect_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
System.Drawing.Rectangle rect=mapControl1.Bounds;
rect.X += rect.Width/3;
rect.Width = rect.Width/3;
rect.Y += rect.Height/3;
rect.Height = rect.Height/3;
SearchInfo si = MapInfo.Mapping.SearchInfoFactory.SearchWithinScreenRect(_map, rect, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// show search geometry on screen for visual confirmation
MapInfo.Geometry.MultiPolygon p = MapInfo.Mapping.SearchInfoFactory.CreateScreenRect(_map.Layers["temp"] as FeatureLayer, rect);
ShowSearchGeometry(p);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find cities with 1/3 radius of center
private void menuItemMapSearchWithinScreenRadius_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
System.Drawing.Rectangle rect=mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width/2;
pt.Y += rect.Height/2;
SearchInfo si = MapInfo.Mapping.SearchInfoFactory.SearchWithinScreenRadius(_map, pt, rect.Width/6, 20, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// show search geometry on screen for visual confirmation
MapInfo.Geometry.MultiPolygon p = MapInfo.Mapping.SearchInfoFactory.CreateScreenCircle(_map.Layers["temp"] as FeatureLayer, pt, rect.Width/6, 20);
ShowSearchGeometry(p);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find cities nearest to center within 3 pixel radius
private void menuItemMapSearchNearest_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
System.Drawing.Rectangle rect=mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width/2;
pt.Y += rect.Height/2;
SearchInfo si = MapInfo.Mapping.SearchInfoFactory.SearchNearest(_map, pt, 3);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
rect.X = pt.X;
rect.Y = pt.Y;
rect.Width = 0;
rect.Height = 0;
rect.Inflate(3, 3);
// show search geometry on screen for visual confirmation
MapInfo.Geometry.MultiPolygon p = MapInfo.Mapping.SearchInfoFactory.CreateScreenRect(_map, rect);
ShowSearchGeometry(p);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find states whre pop 1990 < 4 million
private void menuItemSearchWhere_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// find and select all states with pop > 2 million
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWhere("POP_90 > 2000000");
IResultSetFeatureCollection fc = _catalog.Search("mexico", si);
// set map view to show search results
_map.SetView(fc.Envelope);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find and select cities with Georgia and Florida using geometry
private void menuItemSearchWithinGeometry_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// find and select cities with Georgia and Florida using geometry
// also uses search for feature
Feature fFlorida = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='FL'"));
Feature fGeorgia = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='GA'"));
FeatureGeometry g = fFlorida.Geometry.Combine(fGeorgia.Geometry);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinGeometry(g, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// set map view to show search results
_map.SetView(fc.Envelope);
ShowSearchGeometry(g);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// this is similar to searchwithinscreenrect, but the rect constructed is a map rectangle
// as opposed to a screen rectangle (try both and see the difference)
private void menuItemSearchWithinRect_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
System.Drawing.Rectangle rect=mapControl1.Bounds;
rect.X += rect.Width/3;
rect.Width = rect.Width/3;
rect.Y += rect.Height/3;
rect.Height = rect.Height/3;
DRect mapRect=new DRect();
// use csys and transform of feature layer, because that is the
// layer we are doing the search on
FeatureLayer layer = _map.Layers["uscty_1k"] as FeatureLayer;
layer.DisplayTransform.FromDisplay(rect, out mapRect);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinRect(mapRect, layer.CoordSys, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search(layer.Table, si);
// show search geometry on screen for visual confirmation
DPoint []pts = new DPoint[4];
mapRect.GetCornersOfRect(pts);
FeatureGeometry g = new MapInfo.Geometry.MultiPolygon(layer.CoordSys, CurveSegmentType.Linear, pts);
ShowSearchGeometry(g);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find states that intersect KS
private void menuItemSearchIntersectsFeature_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// find states that intersect KS
// also uses search for feature
Feature fKS = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='KS'"));
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchIntersectsFeature(fKS, IntersectType.Geometry);
IResultSetFeatureCollection fc = _catalog.Search("usa", si);
// set map view to show search results
_map.SetView(fc.Envelope);
ShowSearchGeometry(fKS.Geometry);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find cities with distance of center of map
private void menuItemSearchWithinDistance_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// to compare to SearchWithinScreenRadius, we are calculating
// the search distance the same way it does
System.Drawing.Rectangle rect=mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width/2;
pt.Y += rect.Height/2;
DPoint dpt1 = new DPoint();
// convert center point to map coords (could use map.Center)
_map.DisplayTransform.FromDisplay(pt, out dpt1);
Distance d = MapInfo.Mapping.SearchInfoFactory.ScreenToMapDistance(_map, rect.Width/6);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinDistance(dpt1, _map.GetDisplayCoordSys(), d, ContainsType.Centroid);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// show search geometry on screen for visual confirmation
MapInfo.Geometry.Point p = new MapInfo.Geometry.Point(_map.GetDisplayCoordSys(), dpt1);
FeatureGeometry buffer = p.Buffer(d.Value, d.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// find nearest city to center of map
private void menuItemSearchNearest_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// to compare to SearchWithinScreenRadius, we are calculating
// the search distance the same way it does
System.Drawing.Rectangle rect=mapControl1.Bounds;
System.Drawing.Point pt = new System.Drawing.Point(rect.Left, rect.Top);
pt.X += rect.Width/2;
pt.Y += rect.Height/2;
DPoint dpt1 = new DPoint();
// convert center point to map coords (could use map.Center)
_map.DisplayTransform.FromDisplay(pt, out dpt1);
Distance d = MapInfo.Mapping.SearchInfoFactory.ScreenToMapDistance(_map, 3);
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchNearest(dpt1, _map.GetDisplayCoordSys(), d);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
MapInfo.Geometry.Point p = new MapInfo.Geometry.Point(_map.GetDisplayCoordSys(), dpt1);
FeatureGeometry buffer = p.Buffer(d.Value, d.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer);
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// search through all tables to find objects that intersect
// the states bordering KS
private void menuItemSearchMultipleTables_Click(object sender, System.EventArgs e)
{
try
{
Cursor.Current = Cursors.WaitCursor;
// find states that intersect KS
// then combine them and search all layers within
// also uses search for feature
Feature fKS = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='KS'"));
SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchIntersectsFeature(fKS, IntersectType.Geometry);
IResultSetFeatureCollection fc = _catalog.Search("usa", si);
MapInfo.FeatureProcessing.FeatureProcessor fp = new MapInfo.FeatureProcessing.FeatureProcessor();
Feature f = fp.Combine(fc);
si = MapInfo.Data.SearchInfoFactory.SearchWithinFeature(f, ContainsType.Centroid);
MultiResultSetFeatureCollection mfc = _catalog.Search(_catalog.EnumerateTables(TableFilterFactory.FilterMappableTables()), si);
// set map view to show search results
_map.SetView(f);
ShowSearchGeometry(f.Geometry);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
private void menuItemSqlExpressionFilter_Click(object sender, System.EventArgs e)
{
try
{
// build up a search info by hand (not using the factory)
QueryFilter filter = new SqlExpressionFilter("Buses_91 * 3 < Trucks_91");
QueryDefinition qd = new QueryDefinition(filter, "*");
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("mexico", si);
// set map view to show search results
_map.SetView(fc.Envelope);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// uses contains filter to get cities in florida
private void menuItemContainsFilter_Click(object sender, System.EventArgs e)
{
try
{
Feature fFlorida = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='FL'"));
// build up a search info by hand (not using the factory)
QueryFilter filter = new ContainsFilter(fFlorida.Geometry, ContainsType.Geometry);
QueryDefinition qd = new QueryDefinition(filter, "MI_Geometry", "MI_Style", "MI_Key");
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// set map view to show search results
_map.SetView(fFlorida);
ShowSearchGeometry(fFlorida.Geometry);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// uses intersect filter to get states that intersect florida
private void menuItemIntersectFeature_Click(object sender, System.EventArgs e)
{
try
{
Feature fFlorida = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='FL'"));
// build up a search info by hand (not using the factory)
QueryFilter filter = new IntersectFilter(fFlorida.Geometry, IntersectType.Bounds);
QueryDefinition qd = new QueryDefinition(filter, "*");
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("usa", si);
// set map view to show search results
_map.SetView(fc.Envelope);
ShowSearchGeometry(fFlorida.Geometry);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// a custom query filter that includes objects at least
// a certain distance from the query object and not greater than a second distance
private class MyCustomFilter: SpatialFilter
{
private Distance _distanceInner = new Distance(100, DistanceUnit.Mile);
private Distance _distanceOuter = new Distance(100, DistanceUnit.Mile);
public MyCustomFilter(FeatureGeometry geometry, Distance innerDistance, Distance outerDistance)
:base(geometry)
{
_distanceInner = innerDistance;
_distanceOuter = outerDistance;
}
public override string GetSqlExpression()
{
return string.Format(
"MI_CentroidDistance(MI_Geometry, {0}, '{1}', 'Spherical') > {2} and "
+ "MI_CentroidDistance(MI_Geometry, {0}, '{3}', 'Spherical') < {4} ",
paramName, CoordSys.DistanceUnitAbbreviation(_distanceInner.Unit), _distanceInner.Value,
CoordSys.DistanceUnitAbbreviation(_distanceOuter.Unit), _distanceOuter.Value);
}
}
// uses custom filter to select objects within a distance range from
// chicago
private void menuItemCustomQueryFilter_Click(object sender, System.EventArgs e)
{
try
{
Feature fChicago = _catalog.SearchForFeature("uscty_1k", MapInfo.Data.SearchInfoFactory.SearchWhere("City='Chicago'"));
// build up a search info by hand (not using the factory)
Distance d1 = new Distance(35, DistanceUnit.Mile);
Distance d2 = new Distance(125, DistanceUnit.Mile);
QueryFilter filter = new MyCustomFilter(fChicago.Geometry, d1, d2);
QueryDefinition qd = new QueryDefinition(filter, "*");
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// set map view to show search results
_map.SetView(fc.Envelope);
// make a search geometry to show what we are doing
FeatureGeometry buffer1 = fChicago.Geometry.Buffer(d1.Value, d1.Unit, 20, DistanceType.Spherical);
FeatureGeometry buffer2 = fChicago.Geometry.Buffer(d2.Value, d2.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer1);
ShowSearchGeometry(buffer2, false);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// shows how to combine filters using logical And
private void menuItemLogicalFilter_Click(object sender, System.EventArgs e)
{
try
{
Feature fChicago = _catalog.SearchForFeature("uscty_1k", MapInfo.Data.SearchInfoFactory.SearchWhere("City='Chicago'"));
// build up a search info by hand (not using the factory)
Distance d1 = new Distance(35, DistanceUnit.Mile);
Distance d2 = new Distance(125, DistanceUnit.Mile);
QueryFilter filterA = new MyCustomFilter(fChicago.Geometry, d1, d2);
// build up a search info by hand (not using the factory)
QueryFilter filterB = new SqlExpressionFilter("State='IL'");
QueryFilter filter = new LogicalFilter(LogicalOperation.And, filterA, filterB);
QueryDefinition qd = new QueryDefinition(filter, "*");
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("uscty_1k", si);
// set map view to show search results
_map.SetView(fc.Envelope);
// make a search geometry to show what we are doing
FeatureGeometry buffer1 = fChicago.Geometry.Buffer(d1.Value, d1.Unit, 20, DistanceType.Spherical);
FeatureGeometry buffer2 = fChicago.Geometry.Buffer(d2.Value, d2.Unit, 20, DistanceType.Spherical);
ShowSearchGeometry(buffer1);
ShowSearchGeometry(buffer2, false);
Feature fIL = _catalog.SearchForFeature("usa", MapInfo.Data.SearchInfoFactory.SearchWhere("State='IL'"));
ShowSearchGeometry(fIL.Geometry, false);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
// create a custom processor that returns only the first n rows
public class MySearchResultProcessor: SearchResultProcessor
{
private int _maxRows=0;
private int _rowCount=0;
public MySearchResultProcessor(int maxRows)
{
_maxRows = maxRows;
}
public override void BeginProcessingTable(IResultSetFeatureCollection features)
{
_rowCount=0;
}
public override bool ProcessRow(MIDataReader reader, IResultSetFeatureCollection features)
{
if (_maxRows == 0 || _rowCount < _maxRows)
{
features.Add(reader.Current);
}
_rowCount++;
if (_maxRows > 0 && _rowCount >= _maxRows) return false; // stop processing of this table
return true;
}
}
// return the first 10 rows from cities sorted by state in reverse
private void menuItemCustomProcessor_Click(object sender, System.EventArgs e)
{
try
{
QueryFilter filter = new SqlExpressionFilter(null); // all rows
QueryDefinition qd = new QueryDefinition(filter, "*");
string [] orderby = new string[1];
orderby[0] = "State Desc";
qd.OrderBy = orderby;
SearchResultProcessor srp = new MySearchResultProcessor(10); // stop after 10 rows
SearchInfo si = new SearchInfo(srp, qd);
IResultSetFeatureCollection fc = _catalog.Search("usa", si);
// set map view to show search results
_map.SetView(fc.Envelope);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
private void menuItemSetColumns_Click(object sender, System.EventArgs e)
{
try
{
// build up a search info by hand (not using the factory)
QueryFilter filter = new SqlExpressionFilter("POP_90 < 1000000");
QueryDefinition qd = new QueryDefinition(filter, "MI_Key");
// to Add Columns
qd.AppendColumns("State", "MI_Geometry");
// to set all new set of columns
// not using MI_Geometry here
string[] cols = new string[] {"MI_Key", "MI_Style", "State_Name", "POP_90", "Households_90"};
qd.Columns = cols;
// Note: if you are doing a multi table search, the columns must apply to each table
// alternatively, you can derive a new class from QueryDefinition and
// override the GetColumns() method to return different columns for each table being searched
SearchInfo si = new SearchInfo(null, qd);
IResultSetFeatureCollection fc = _catalog.Search("mexico", si);
// set map view to show search results
_map.SetView(_map.Layers["mexico"] as FeatureLayer);
// show results as selection
SelectFeatureCollection(fc);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
}
}
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