Civil 3D横断面图编组特性中虽然有手动设置高程选项，

但其功能不符合某些特殊需求，

比如要将所有横断面的高程范围设置成固定的范围，

如果手工指定高程范围，

需要单独操作每一个横断面图，

在实际工作中显然不能满足要求。

此时就提现出二次开发的必要性了。

几十行的代码就能满足要求。

 

代码如下：

using Autodesk.AutoCAD.DatabaseServices;using Autodesk.AutoCAD.EditorInput;using Autodesk.AutoCAD.ApplicationServices;using Autodesk.Civil.DatabaseServices;namespace 翻模工具{    class SetSectionViewHeight    {        public void Do()        {            Document doc = Autodesk.AutoCAD.ApplicationServices.Application               .DocumentManager.CurrentDocument;            Database db = doc.Database;            PromptDoubleOptions pdo = new PromptDoubleOptions("\n横断面图最小高程为");            pdo.AllowArbitraryInput = false;            pdo.AllowNone = false;            PromptDoubleResult pdr = doc.Editor.GetDouble(pdo);            if (pdr.Status != PromptStatus.OK) return;            double minEle = pdr.Value;            pdo.Message = "\n横断面图整体高度";            pdr = doc.Editor.GetDouble(pdo);            if (pdr.Status != PromptStatus.OK) return;            double maxEle = minEle + pdr.Value;            TypedValue[] tv = new TypedValue[]            {                new TypedValue((int)DxfCode.Start,"AECC_GRAPH_SECTION_VIEW")            };            SelectionFilter sf = new SelectionFilter(tv);            PromptSelectionResult psr = doc.Editor.GetSelection(sf);            if (psr.Status != PromptStatus.OK) return;            SelectionSet ss = psr.Value;            using (Transaction tr = doc.TransactionManager.StartTransaction())            {                foreach (ObjectId id in ss.GetObjectIds())                {                    SectionView sv = id.GetObject(OpenMode.ForWrite) as SectionView;                    if (sv.IsElevationRangeAutomatic)                    {                        sv.IsElevationRangeAutomatic = false;                    }                    if (minEle > sv.ElevationMax)                    {                        sv.ElevationMax = maxEle;                        sv.ElevationMin = minEle;                    }                    else                    {                        sv.ElevationMin = minEle;                        sv.ElevationMax = maxEle;                    }                }                tr.Commit();            }        }    }}