向圖層中添加線段

向圖層中添加線段和向圖層中添加點是一樣的，其本質都是向圖層中添加一個圖元，只是屬於不同類型的圖元。並且點和線段是可以在一個圖存上共存的。代碼示例如下：
複製內容到剪貼板
代碼:
/// <summary>

/// 向圖層中添加線段


/// 2008年8月6日

/// <param name="tempLayerTableName">表名</param>

/// <param name="tempLayerName">圖層名</param>

/// <param name="startPoint">線段起點座標</param>

/// <param name="endPoint">線段終點座標</param>

/// </summary>

public static void AddPointToLayer(string tempLayerTableName, string tempLayerName, DPoint startPoint, DPoint endPoint)

{

MapInfo.Mapping.Map myMap = MapInfo.Engine.Session.Current.MapFactory[MapControl1.MapAlias];

//獲取圖層和表

FeatureLayer workLayer = (MapInfo.Mapping.FeatureLayer)myMap.Layers[tempLayerName];

MapInfo.Data.Table tblTemp = MapInfo.Engine.Session.Current.Catalog.GetTable(tempLayerTableName);

//創建線圖元及其樣式

FeatureGeometry pgLine = MultiCurve.CreateLine(workLayer.CoordSys, startPoint, endPoint);

MapInfo.Styles.SimpleLineStyle slsLine = new
MapInfo.Styles.SimpleLineStyle(new LineWidth(3, LineWidthUnit.Pixel),
2, System.Drawing.Color.OrangeRed);

MapInfo.Styles.CompositeStyle csLine = new MapInfo.Styles.CompositeStyle(slsLine);

MapInfo.Data.Feature ptLine = new MapInfo.Data.Feature(tblTemp.TableInfo.Columns);

ptPoint.Geometry = pgLine;

ptPoint.Style = csLine;


//將線圖元加入圖層

workLayer.Table.InsertFeature(ptLine);