按钮控件

开发平台：
C#

MainForm.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.ADF;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.Display;
namespace addPolylineTest
{
    public sealed partial class MainForm : Form
    {
        #region class private members
        private IMapControl3 m_mapControl = null;
        private string m_mapDocumentName = string.Empty;
        #endregion
        #region class constructor
        public MainForm()
        {
            InitializeComponent();
        }
        #endregion
        private void MainForm_Load(object sender, EventArgs e)
        {
            
            //get the MapControl
            m_mapControl = (IMapControl3)axMapControl1.Object;
            //disable the Save menu (since there is no document yet)
            menuSaveDoc.Enabled = false;
            
        }
        private void addPolyline()
        {
            string strShapeFolder = @"D:";
            string strShapeFile = "ct.shp";
            string shapeFileFullName = strShapeFolder + strShapeFile;
            IFeatureClass pFeatureClass;
            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();
            IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(strShapeFolder, 0);
            pFeatureClass = pFeatureWorkspace.OpenFeatureClass(strShapeFile);
            //pFeatureClass = pFeatureWorkspace.OpenFeatureClass(strShapeFile);
            IPolyline polyLine = new PolylineClass();
            IPolyline polyLine1 = new PolylineClass();
        
            IFeature pFeature = pFeatureClass.CreateFeature();
            pFeature.Shape = polyLine;
            IPoint p1 = new PointClass();
            IPoint p2 = new PointClass();
            IPoint p3 = new PointClass();
            IPoint p4 = new PointClass();
            p1.PutCoords(120.306, 31.674);
            p2.PutCoords(120.306, 31.672);
            p3.PutCoords(120.307, 31.8);
            p4.PutCoords(120.308, 31.674);
            polyLine.FromPoint = p1;
            polyLine.ToPoint = p2;
            //IGeometry pGeometry = (IGeometry)polyLine;
            //IPath pPath = new PathClass();
            //pPath.SmoothLocal(2);
 
         
            IFeatureLayer pFeaturelayer = new FeatureLayerClass();
            pFeaturelayer.FeatureClass = pFeatureClass;
            pFeaturelayer.Name = "路况信息";
            pFeatureClass.CreateFeature();
            pFeature.Store();
          
            this.axMapControl1.AddLayer(pFeaturelayer);
            this.axMapControl1.Refresh();
            // if (arrPointAll.Count <= 0)//点坐标数组不能为空
            //{
            //    return;
            //}
             ESRI.ArcGIS.Carto.IActiveView activeView;
            //if (activeView == null)
            //{
             activeView = this.axMapControl1.ActiveView.FocusMap as IActiveView;
            //}
            //删除以前的element
            //DeleteOldElement(activeView.GraphicsContainer);
            // 获取IRGBColor接口
            IRgbColor color = new RgbColor();
            // 设置颜色属性
            color.Red = 0;
            color.Blue = 0;
                color.Green=255;
            color.Transparency = 255;
            
            //点
            IPoint pPoint = new PointClass();
            //线样式
            ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
            lineSymbol.Color = color;
            lineSymbol.Style = esriSimpleLineStyle.esriSLSInsideFrame;
            lineSymbol.Width = 2;
            //线元素
            ILineElement lineElement = new LineElementClass();
            lineElement.Symbol = lineSymbol;
            //创建线
            //IPolyline m_Polyline = new PolylineClass();
            //点集合
            //IPointCollection m_PointCollection = new PolylineClass();
            //点数组
            //ArrayList arrPoint = new ArrayList();
            //object missing = Type.Missing;
            //foreach (object o in arrPointAll)
            //{
            //    arrPoint = (ArrayList)o;
            //    pPoint.PutCoords(int.Parse(arrPoint[0].ToString()), int.Parse(arrPoint[1].ToString()));
            //    m_PointCollection.AddPoint(pPoint, ref missing, ref missing);
            //}
            ////QI for IPolyline
            //m_Polyline = m_PointCollection as IPolyline;
            ////放大地图
            //折线范围
            IEnvelope pEnvelope = polyLine.Envelope;
            //折线区域
            //IArea pArea = pEnvelope as IArea;
            //pPoint = pArea.Centroid;
            //this.ChangeEnvelope(pPoint, 0.06, 0.06);
            //QI for IElement
            IElement element = lineElement as IElement;
    
            element.Geometry = polyLine;
            //加载线元素到地图
            activeView.GraphicsContainer.AddElement(element, 0);
            //Refresh the graphics
            activeView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
        }
        #region Main Menu event handlers
        private void menuNewDoc_Click(object sender, EventArgs e)
        {
            //execute New Document command
            ICommand command = new CreateNewDocument();
            command.OnCreate(m_mapControl.Object);
            command.OnClick();
        }
        private void menuOpenDoc_Click(object sender, EventArgs e)
        {
            //execute Open Document command
            ICommand command = new ControlsOpenDocCommandClass();
            command.OnCreate(m_mapControl.Object);
            command.OnClick();
        }
        private void menuSaveDoc_Click(object sender, EventArgs e)
        {
            //execute Save Document command
            if (m_mapControl.CheckMxFile(m_mapDocumentName))
            {
                //create a new instance of a MapDocument
                IMapDocument mapDoc = new MapDocumentClass();
                mapDoc.Open(m_mapDocumentName, string.Empty);
                //Make sure that the MapDocument is not readonly
                if (mapDoc.get_IsReadOnly(m_mapDocumentName))
                {
                    MessageBox.Show("Map document is read only!");
                    mapDoc.Close();
                    return;
                }
                //Replace its contents with the current map
                mapDoc.ReplaceContents((IMxdContents)m_mapControl.Map);
                //save the MapDocument in order to persist it
                mapDoc.Save(mapDoc.UsesRelativePaths, false);
                //close the MapDocument
                mapDoc.Close();
            }
        }
        private void menuSaveAs_Click(object sender, EventArgs e)
        {
            //execute SaveAs Document command
            ICommand command = new ControlsSaveAsDocCommandClass();
            command.OnCreate(m_mapControl.Object);
            command.OnClick();
        }
        private void menuExitApp_Click(object sender, EventArgs e)
        {
            //exit the application
            Application.Exit();
        }
        #endregion
        //listen to MapReplaced evant in order to update the statusbar and the Save menu
        private void axMapControl1_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
        {
            //get the current document name from the MapControl
            m_mapDocumentName = m_mapControl.DocumentFilename;
            //if there is no MapDocument, diable the Save menu and clear the statusbar
            if (m_mapDocumentName == string.Empty)
            {
                menuSaveDoc.Enabled = false;
                statusBarXY.Text = string.Empty;
            }
            else
            {
                //enable the Save manu and write the doc name to the statusbar
                menuSaveDoc.Enabled = true;
                statusBarXY.Text = System.IO.Path.GetFileName(m_mapDocumentName);
            }
        }
        private void axMapControl1_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e)
        {
            statusBarXY.Text = string.Format("{0}, {1}  {2}", e.mapX.ToString("#######.##"), e.mapY.ToString("#######.##"), axMapControl1.MapUnits.ToString().Substring(4));
        }
        private void button1_Click(object sender, EventArgs e)
        {
            addPolyline();
        }
    }
}

						