命令“_”。“修剪”；
学习C#。NET for Autocad。处理Autocad内置命令的一个简单练习:用栅栏修剪一束线。我在" ed.command("_ "获得豁免。TRIM”)”，而我在任何地方都找不到我做错了什么。
有什么建议和想法吗？
public void Tst2()
{
Document doc = AcAp.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
Line obj;
PromptEntityOptions peo = new PromptEntityOptions("\nSelect edge: ");
peo.SetRejectMessage("\nSelect a LINE for edge...");
peo.AddAllowedClass(typeof(Line), true);
PromptEntityResult per = ed.GetEntity(peo);
if (per.Status != PromptStatus.OK) return;
using (Transaction tr = db.TransactionManager.StartTransaction())
{
obj = tr.GetObject(per.ObjectId, OpenMode.ForRead) as Line;
obj.Highlight();
tr.Commit();
}
// Prompt for the start point
PromptPointOptions ppt = new PromptPointOptions("\nFirst point of the edge: ");
PromptPointResult pep = doc.Editor.GetPoint(ppt);
Point3d pini = pep.Value;
if (pep.Status == PromptStatus.Cancel) return;
// Prompt for the end point
ppt.Message = "\nSecond point of the edge: ";
ppt.UseBasePoint = true;
ppt.BasePoint = pini;
pep = doc.Editor.GetPoint(ppt);
Point3d pfin = pep.Value;
if (pep.Status == PromptStatus.Cancel) return;
ed.Command("_.TRIM", obj, "_F", pini, pfin );
obj.Unhighlight();
}
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