ArcEngine数据编辑操作–添加线

    添加线

    添加线的方法跟添加点一样，不同的只是地物类型不一样而已，我把代码贴出来，大家跟添加点的方式进行对比。这样便于记忆。也有利于理解。

     public void AddLineByWrite()

     {

         IFeatureLayer
l = MapCtr.Map.get_Layer(0) as IFeatureLayer;

         IFeatureClass
fc = l.FeatureClass ;

         IFeatureClassWrite
fr = fc as IFeatureClassWrite ;

         IWorkspaceEdit
w = (fc as IDataset).Workspace as IWorkspaceEdit;

         IFeature f ;  

          //可选参数的设置

         object Missing
= Type.Missing;

         IPoint p=new
PointClass();

         w.StartEditing
(true);

         w.StartEditOperation()
;

         for (int i =
0 ; i< 100 ; i++ )

         {

              f
= fc.CreateFeature();

              //定义一个多义线对象

              IPolyline
PlyLine=new PolylineClass();

              //定义一个点的集合

              IPointCollection
ptclo = PlyLine as IPointCollection;

              //定义一系列要添加到多义线上的点对象，并赋初始值

              for(int
j=0;j<4;j++)

              {  

                   p.PutCoords(j,j);

                   ptclo.AddPoint(p,ref
Missing,ref Missing);

              }

                   f.Shape
= PlyLine;

                   fr.WriteFeature
(f);

         }

              w.StopEditOperation();

              w.StopEditing(true);

}

    至于添加线的其他两种方法，通过修改添加点的代码，就可以得到。可以自己想想然后测试，这样便于记忆和理解。