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不在事务中打开是可以用的，已经解决了，谢谢

你这个参考手册是在官网下载的嘛？我的参考手册只有函数原型，没有任何示例和介绍

谢谢你，成功了

var tr = db.TransactionManager.StartOpenCloseTransaction() 在此事务中使用仍然报错

public class ZhiPai { [CommandMethod("SHL")] public void ShortenLines() { Document doc = Application.DocumentManager.MdiActiveDocument; Database db = doc.Database; Editor ed = doc.Editor; SelectionSet ss = SelectLines(ed, "nSelect lines to shorten: "); if (ss != null) { Transaction tr = db.TransactionManager.StartOpenCloseTransaction(); using (tr) { foreach (SelectedObject so in ss) { Curve cur = (Curve)tr.GetObject( so.ObjectId, OpenMode.ForWrite ); double sp = cur.StartParam, ep = cur.EndParam, delta = (ep - sp) * 0.25; DoubleCollection dc = new DoubleCollection(); dc.Add(sp + delta); dc.Add(ep - delta); DBObjectCollection objs = cur.GetSplitCurves(dc); if (objs.Count == 3) { Entity ent = (Entity)objs[1]; cur.HandOverTo(ent, true, true); tr.AddNewlyCreatedDBObject(ent, true); cur.Dispose(); objs[0].Dispose(); objs[2].Dispose(); } } tr.Commit(); } } } private SelectionSet SelectLines(Editor ed, string msg) { PromptSelectionOptions pso = new PromptSelectionOptions(); pso.MessageForAdding = (string.IsNullOrEmpty(msg) ? "nSelect lines: " : msg); TypedValue[] tvs = new TypedValue[1] { new TypedValue( (int)DxfCode.Start, "LINE" ) }; SelectionFilter sf = new SelectionFilter(tvs); PromptSelectionResult psr = ed.GetSelection(pso, sf); if (psr.Status != PromptStatus.OK || psr.Value.Count <= 0) return null; return psr.Value; } }

使用的是2026版本，using (var tr = db.TransactionManager.StartOpenCloseTransaction())， solid = tr.GetObject(solid.ObjectId, OpenMode.ForWrite) as Solid3d; solid.HandOverTo(newsolid, true, true); btr.AppendEntity(newsolid); tr.AddNewlyCreatedDBObject(newsolid, true); 这是主要代码，我在看官方文档的时候，官网文档描述为未存入数据库的临时实体覆盖原来的实体，在执行到solid.HandOverTo(newsolid, true, true)这句话的时候就会报错