研究mapx一周了，总算会些基本操作了(1)

研究mapx一周了，总算会些基本操作了。

这是Form1.cs代码页面：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace mapx22
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)

        {
            创建测量距离的工具  
            axMap1.CreateCustomTool(99, MapXLib.ToolTypeConstants.miToolTypePoly, MapXLib.CursorConstants.miArrowCursor, null, null, null);
            创建测量面积的工具
            axMap1.CreateCustomTool(98, MapXLib.ToolTypeConstants.miToolTypePoly,MapXLib.CursorConstants.miCrossCursor, null, null, null);
        }       
        private void axMap1_PolyToolUsed(object sender, AxMapXLib.CMapXEvents_PolyToolUsedEvent e)
        {

            if (e.toolNum == 99)//测量距离
            {

                MapXLib.Points pts = (MapXLib.Points)e.points;

                MapXLib.Point pt1, pt2;

                double d = 0.0;

                //计算顺序两个点距离,累计得到总距离

                for (int i = 1; i < pts.Count; i++)
                {

                    pt1 = pts._Item(i);

                    pt2 = pts._Item(i + 1);

                    d += axMap1.Distance(pt1.X, pt1.Y, pt2.X, pt2.Y);

                }

                this.label3.Text =  d.ToString();

            }

            else if (e.toolNum == 98)//面积
            {

                MapXLib.Points pts = (MapXLib.Points)e.points;

                //偷懒了但是很正确

                MapXLib.FeatureFactory dd = axMap1.FeatureFactory;

                MapXLib.Style style = axMap1.DefaultStyle;

                this.label4.Text=dd.CreateRegion(pts, style).Area.ToString();
            }               
        }
        private void button1_Click(object sender, EventArgs e)
        {
            axMap1.CurrentTool = (MapXLib.ToolConstants)99;
        }
        private void button2_Click(object sender, EventArgs e)
        {
            axMap1.CurrentTool = (MapXLib.ToolConstants)98;         
        }

        private void button3_Click(object sender, EventArgs e)
        {
            MapXLib.Layer lyr;
            lyr = axMap1.Layers.CreateLayer("MyLayer", "e://set//MyLayer.Tab", 0, 32, axMap1.DisplayCoordSys);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            MapXLib.LayerInfo li;
            li = new MapXLib.LayerInfoClass();
            li.Type = MapXLib.LayerInfoTypeConstants.miLayerInfoTypeTab;
            li.AddParameter("FileSpec", "e://set//MyLayer.Tab");
            li.AddParameter("Visible", false);
            li.AddParameter("AutoCreateDataset", true);
            li.AddParameter("DatasetName", "MyLayer");
            axMap1.Layers.Add(li, 0);
            axMap1.Layers.LayersDlg("", "");
            axMap1.SaveMapAsGeoset("测试", "e://set//MyMap.GST");
        }

        private void button5_Click(object sender, EventArgs e)
        {
            int lyrind = 0;
            axMap1.Layers.LayersDlg("", "");
            for (int i = 1; i < axMap1.Layers.Count; i++)
            {
                if (axMap1.Layers[i]._Name.Trim() == "MyLayer")
                {
                    lyrind = i;
                    break;
                }
            }
            axMap1.Layers.Remove(lyrind);
            axMap1.Layers.LayersDlg("", "");
        }

        private void button6_Click(object sender, EventArgs e)
        {
            MapXLib.LayerInfoClass li = new MapXLib.LayerInfoClass();
            MapXLib.Features ftrs = null;
            MapXLib.FieldsClass flds = new MapXLib.FieldsClass();
            MapXLib.Fields Myflds = null;
            MapXLib.Dataset dts = null;
            flds.Add("State", "State_Name", MapXLib.AggregationFunctionConstants.miAggregationSum,MapXLib.FieldTypeConstants.miTypeString);
            dts = axMap1.DataSets.Add(MapXLib.DatasetTypeConstants.miDataSetLayer, axMap1.Layers._Item(1), "MyLayer", 0, 0, 0, flds, false);
            Myflds = dts.Fields;
            ftrs = axMap1.Layers._Item("USA").Selection.Clone();
            li.Type = MapXLib.LayerInfoTypeConstants.miLayerInfoTypeTemp;
            li.AddParameter("Name", "USA Temp Layer");
            li.AddParameter("Fields", Myflds);
            li.AddParameter("Features", ftrs);
            axMap1.Layers.Add(li, 1);
            axMap1.Layers.LayersDlg("", "");
        }

        private void button7_Click(object sender, EventArgs e)
        {
           // axMap1.Bounds = axMap1.Layers._Item("USA").Bounds;
            axMap1.CtlBounds = axMap1.Layers._Item("USA").Bounds;
        }

        private void button8_Click(object sender, EventArgs e)
        {
            axMap1.Layers._Item("USA Temp Layer").Editable = true;
            axMap1.Layers.InsertionLayer = axMap1.Layers._Item("USA Temp Layer");
            axMap1.CurrentTool = MapXLib.ToolConstants.miAddLineTool;
        }

        private void button9_Click(object sender, EventArgs e)
        {
            MapXLib.Style sty = new MapXLib.StyleClass();
            MapXLib.Feature ftr = new MapXLib.FeatureClass();
            ftr.Attach(axMap1.GetOcx());
            ftr.Type = MapXLib.FeatureTypeConstants.miFeatureTypeText;
            sty.TextFontColor = 255;
            sty.TextFont.Size = 12;
            ftr.Style = sty;
            ftr.Caption = "New Feature";
            ftr.Point.Set(axMap1.CenterX, axMap1.CenterY);
            axMap1.Layers._Item("US Top 20 Cities").Style = sty;
            ftr = axMap1.Layers._Item("US Top 20 Cities").AddFeature(ftr, new MapXLib.RowValuesClass());
            ftr.Update(ftr, new MapXLib.RowValuesClass());
        }

        private void button10_Click(object sender, EventArgs e)
        {
            MapXLib.FindFeature fRes = null;
            fRes = axMap1.Layers._Item("US Top 20 Cities").Find.Search("New York", "");
            if (fRes.FindRC % 10 == 1)
            {
                axMap1.CenterX = fRes.CenterX;
                axMap1.CenterY = fRes.CenterY;
                axMap1.Layers._Item("US Top 20 Cities").Selection.Add(fRes);
            }
        }

        private void button11_Click(object sender, EventArgs e)
        {

            axMap1.Layers._Item("US Top 20 Cities").UpdateFeature("New Feature",null,null);
           // axMap1.Layers._Item("US Top 20 Cities").DeleteFeature("New Feature");
        }
    }
}