using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Windows.Forms;  
 
 namespace EditGeometryOfShapefile  
 {  
     static class Program  
     {  
         /// <summary>  
         /// The main entry point for the application.  
         /// </summary>  
         [STAThread]  
         static void Main()  
         {  
             Application.EnableVisualStyles();  
             Application.SetCompatibleTextRenderingDefault(false);  
             Application.Run(new TestForm());  
         }  
     }  
 }  
 

 using System;  
 using System.Windows.Forms;  
 using System.Collections.ObjectModel;  
 using ThinkGeo.MapSuite.Core;  
 using ThinkGeo.MapSuite.DesktopEdition;  
 
 
 namespace  EditGeometryOfShapefile  
 {  
     public partial class TestForm : Form  
     {  
         public TestForm()  
         {  
             InitializeComponent();  
         }  
 
         private void TestForm_Load(object sender, EventArgs e)  
         {  
             winformsMap1.MapUnit = GeographyUnit.DecimalDegree;  
             winformsMap1.CurrentExtent = new RectangleShape(-97.8035,30.2901,-97.797,30.2861);  
             winformsMap1.BackgroundOverlay.BackgroundBrush = new GeoSolidBrush(GeoColor.StandardColors.LightGoldenrodYellow);  
 
             ShapeFileFeatureLayer layer1 = new ShapeFileFeatureLayer(@"../../data/austinstreets.shp",ShapeFileReadWriteMode.ReadWrite);  
             layer1.ZoomLevelSet.ZoomLevel01.DefaultLineStyle = LineStyles.LocalRoad1;  
             layer1.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;  
 
             LayerOverlay layerOverlay = new LayerOverlay();  
             layerOverlay.Layers.Add("Streets", layer1);  
             winformsMap1.Overlays.Add("StreetsOverlay",layerOverlay);  
 
             winformsMap1.Refresh();  
         }  
 
         private void btnEdit_Click(object sender, EventArgs e)  
         {  
             LayerOverlay layerOverlay = (LayerOverlay)winformsMap1.Overlays["StreetsOverlay"];  
             ShapeFileFeatureLayer layer1 = (ShapeFileFeatureLayer)layerOverlay.Layers["Streets"];  
 
             //Edit the geometry of a street feature.  
             layer1.Open();  
             layer1.FeatureSource.BeginTransaction();  
 
             Collection<Feature> features = layer1.FeatureSource.GetFeaturesByColumnValue("RECID", "13762", ReturningColumnsType.AllColumns);  
 
             //Gets the MultilineShape and add a vertes  
             MultilineShape newMultiLineShape = (MultilineShape)features[0].GetShape();  
             newMultiLineShape.Lines[0].Vertices.Add(new Vertex(-97.8015, 30.2880));  
             //Sets the Id of the MultilineShape the same as the feature  
             newMultiLineShape.Id = features[0].Id;  
             //Updates the feature with the new geometry.  
             layer1.FeatureSource.UpdateFeature(newMultiLineShape, features[0].ColumnValues);  
 
             layer1.FeatureSource.CommitTransaction();  
             layer1.Close();  
 
             winformsMap1.Refresh(layerOverlay);  
 
             btnEdit.Enabled = false;  
         }  
 
 
         private void winformsMap1_MouseMove(object sender, MouseEventArgs e)  
         {  
             //Displays the X and Y in screen coordinates.  
             statusStrip1.Items["toolStripStatusLabelScreen"].Text = "X:" + e.X + " Y:" + e.Y;  
 
             //Gets the PointShape in world coordinates from screen coordinates.  
             PointShape pointShape = ExtentHelper.ToWorldCoordinate(winformsMap1.CurrentExtent, new ScreenPointF(e.X, e.Y), winformsMap1.Width, winformsMap1.Height);  
 
             //Displays world coordinates.  
             statusStrip1.Items["toolStripStatusLabelWorld"].Text = "(world) X:" + Math.Round(pointShape.X, 4) + " Y:" + Math.Round(pointShape.Y, 4);  
         }  
 
         private void btnClose_Click(object sender, EventArgs e)  
         {  
             this.Close();  
         }  
 
 
 
     }  
 }