MapXtreme 2008 最佳体验 GIS 地图实例
using System;
using System.Drawing;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using MapInfo.Data;
using MapInfo.Mapping;
using MapInfo.Engine;
using MapInfo.Geometry;
using MapInfo.Styles;
using MapInfo.Tools;
using MapInfo.Windows.Controls;
using SLMApp.DBORM;
namespace SLMApp
{
public partial class MapForm : Form
{
private MICommand _miCommand;
private MIConnection _miConnection;
private String strAppDir;//目录
private static String testLayer = "设备";//图层名称
private String filePath;//加载地图文件路径 兼容两种格式
private static double zoomCk = 0.578;//初始化的倍率
private double range = 0.0002;//范围
private double dblZoom = 0;//放大缩小倍率
private List<FeatureGeometry> fgArray = new List<FeatureGeometry>();//坐标集合
//图元选择事件
private void FeatureSelected(object sender, FeatureSelectedEventArgs e)
{
ISession session = MapInfo.Engine.Session.Current;
Table table = session.Catalog.GetTable(testLayer);//获取层
IResultSetFeatureCollection fc = session.Selections.DefaultSelection[table];//获取选择元素层
int nCount = 0;
if (fc != null)
{
nCount = fc.Count;
if (nCount == 1)//判断在指定层上，是否只选中一个
{
this.findBySql("select * from " + testLayer, e.MapCoordinate.x, e.MapCoordinate.y);
}
}
}
//左下脚显示放大缩小的比例
void Map_ViewChangedEvent(object sender, ViewChangedEventArgs e)
{
// 放大缩小
this.dblZoom = System.Convert.ToDouble(String.Format("{0:E2}", mapControl1.Map.Zoom.Value));
ultraStatusBar1.Text = "缩放比例: " + dblZoom.ToString() + " " + MapInfo.Geometry.CoordSys.DistanceUnitAbbreviation(mapControl1.Map.Zoom.Unit);
}
public MapForm()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//链接物理层
this._miConnection = new MIConnection();
_miConnection.Open();
this._miCommand = _miConnection.CreateCommand();
this.strAppDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
this.strAppDir = this.strAppDir.Replace(@"file:\", "");
this.filePath = strAppDir + @"\MapInfo\maps\SLM.gst";//加载地图
//this.filePath = @"D:\My Documents\Visual Studio 2008\Projects\MapXtremeMapFormApplication1\MapXtremeMapFormApplication1\bin\Debug\Map\xindou\xindou.gst";
//MessageBox.Show(this.filePath);
//Microsoft.Win32.RegistryKey keySamp = Microsoft.Win32.Registry.LocalMachine.CreateSubKey(@"SOFTWARE\MapInfo\MapXtreme\6.8.0");
//加载地图，兼容gst和nws两种格式
if (filePath.ToLower().EndsWith(MapLoader.FileExtensionGST))
{
mapControl1.Map.Load(new MapGeosetLoader(filePath));
}
else if (filePath.ToLower().EndsWith(MapLoader.FileExtensionWOR))
{
mapControl1.Map.Load(new MapWorkSpaceLoader(filePath));
mapControl1.Map.Size = mapControl1.Size;
}
//改变坐标
mapControl1.Map.ViewChangedEvent += new ViewChangedEventHandler(Map_ViewChangedEvent);
mapControl1.Tools.FeatureSelected += new FeatureSelectedEventHandler(FeatureSelected);
Map_ViewChangedEvent(this, null);
//将其他图层设为不可选
for (int i = 0; i < mapControl1.Map.Layers.Count; i++)
{
MapInfo.Mapping.LayerHelper.SetSelectable(mapControl1.Map.Layers[i], false);
}
//创建临时层********/
var cat = Session.Current.Catalog;
TableInfoMemTable tblInfoTemp = new TableInfoMemTable(testLayer);
Table tblTemp = cat.GetTable(testLayer);
if (tblTemp != null)
{
cat.CloseTable(testLayer);
}
//加载层元素
tblInfoTemp.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(mapControl1.Map.GetDisplayCoordSys()));
tblInfoTemp.Columns.Add(ColumnFactory.CreateStyleColumn());
tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("名称", 8));
tblInfoTemp.Columns.Add(ColumnFactory.CreateStringColumn("设备编号", 8));
//层上创建物理表
tblTemp = cat.CreateTable(tblInfoTemp);
FeatureLayer lyr
= new FeatureLayer(tblTemp);
mapControl1.Map.Layers.Add(lyr);
//加入层/***********************/
//为点添加标注********/
TextStyle _fontSymbol2 = new TextStyle();
_fontSymbol2.Font.ForeColor = Color.Black;
_fontSymbol2.Font.Size = 6;
LabelLayer layer = new LabelLayer();
mapControl1.Map.Layers.Add(layer);
LabelSource source = new LabelSource(cat.GetTable(testLayer));
source.DefaultLabelProperties.Style = _fontSymbol2;
layer.Sources.Append(source);
/***********************/
//在数据库分别读取每个地点的xy坐标 并且写进地图
DataBaseDataContext db = new DataBaseDataContext();
var result = from dt in db.DevType_Table select dt;
foreach (DevType_Table devtable in result)
{
showPointOnSearchTableMap((double)devtable.x, (double)devtable.y, devtable.DeviceName.Trim(), devtable.DeviceID);
}
rtuDataGrid.DataSource = result;
//把除了名称的其他列都隐藏起来
rtuDataGrid.Columns[0].HeaderText = "地点";
for (int i = 1; i < rtuDataGrid.ColumnCount; i++)
{
rtuDataGrid.Columns[i].Visible = false;
}
}
private void findBySql(string sql, double xx, double yy)
{
try
{
//计算倍率
double rangeResult;
if (dblZoom > 0)
{
rangeResult = range * (dblZoom / zoomCk);
}
else
{
rangeResult = range;
}
//进行物理查询
this._miCommand.CommandText = sql;
MIDataReader miReader = this._miCommand.ExecuteReader();
while (miReader.Read())
{
//获取图元坐标范围
FeatureGeometry fg = (FeatureGeometry)miReader.GetValue(0);
if (xx > fg.Bounds.x1 - rangeResult && xx < fg.Bounds.x2 + rangeResult && yy > fg.Bounds.y1 - rangeResult && yy < fg.Bounds.y2 + rangeResult)
{
//如果点击范围在此图元的话 执行以下
/*
Form2 form2 = new Form2();
form2.graphTitle = dr[0] + "设备的运行情况";
form2.ShowDialog();
* */
MessageBox.Show("显示设备信息");
}
}
miReader.Close();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
//在指定层显示图元
private void showPointOnSearchTableMap(double x, double y, string pointname, int id)
{
//设置样式
CoordSys coordSys = mapControl1.Map.GetDisplayCoordSys();
MapInfo.Geometry.FeatureGeometry g = new MapInfo.Geometry.Point(coordSys, x, y);
MapInfo.Styles.SimpleVectorPointStyle vs = new MapInfo.Styles.SimpleVectorPointStyle(37, System.Drawing.Color.Red, 14);
MapInfo.Styles.CompositeStyle cs = new MapInfo.Styles.CompositeStyle(vs);
//添加图元
MICommand cmd = _miConnection.CreateCommand();
cmd.Parameters.Add("geometry", MIDbType.FeatureGeometry);
cmd.Parameters.Add("style", MIDbType.Style);
cmd.Parameters.Add("no", MIDbType.String);
cmd.Parameters.Add("sbno", MIDbType.Int);
cmd.CommandText = "Insert Into " + testLayer + " (obj,MI_Style,名称,设备编号) values (geometry,style,no,sbno)";
cmd.Prepare();
cmd.Parameters[0].Value = g;
cmd.Parameters[1].Value = cs;
cmd.Parameters[2].Value = pointname;
cmd.Parameters[3].Value = id;
cmd.ExecuteNonQuery();
cmd.Dispose();
}
private void mapControl1_MouseMove(object sender, MouseEventArgs e)
{
//将鼠标xy坐标转为mapX的地图经纬度坐标
System.Drawing.PointF DisplayPoint = new PointF(e.X, e.Y);
MapInfo.Geometry.DPoint MapPoint = new MapInfo.Geometry.DPoint();
MapInfo.Geometry.DisplayTransform converter = this.mapControl1.Map.DisplayTransform;
converter.FromDisplay(DisplayPoint, out MapPoint);
//如果状态条是有2个位置的话，在第二个位置显示经纬度信息
ultraStatusBar1.Text = "经纬度信息：X=" + MapPoint.x.ToString() + ", Y=" + MapPoint.y.ToString();
}
private void ultraToolbarsManager1_ToolClick(object sender, Infragistics.Win.UltraWinToolbars.ToolClickEventArgs e)
{
}
private void rtuDataGrid_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
int rowIndex = e.RowIndex;//获取当前行
string s = rtuDataGrid.Rows[rowIndex].Cells["x"].Value.ToString(); //获取当前行xh字段的值
MessageBox.Show(s);
}
}
}
