向圖層中添加線段和向圖層中添加點(diǎn)是一樣的，其本質(zhì)都是向圖層中添加一個(gè)圖元，只是屬于不同類型的圖元。并且點(diǎn)和線段是可以在一個(gè)圖存上共存的。代碼示例如下：

?

??? /// <summary>
??? /// 向圖層中添加線段
??? /// Design by Glacier
??? /// 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(diǎn)坐標(biāo)</param>
??? /// <param name="endPoint">線段終點(diǎn)坐標(biāo)</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(chuàng)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);
??? }

轉(zhuǎn)載于:https://www.cnblogs.com/glacierh/archive/2008/08/06/1262185.html

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