草图偏置曲线返回的OBJECT无法用日志拉升

smalfly11

这是录的日志里草图偏置曲线里的
6 ~( e' t4 S4 [( uNXObject nXObject2;
    nXObject2 = skeTChOffsetBuilder1.Commit();
8 I) W4 w' ?5 S2 }- K   
& i3 Q7 f% _! c+ O- D2 B# \    NXObject[] objects1;
    objects1 = sketchOffsetBuilder1.GetCommittedObjects();
* k# d9 b# m# l2 A  m/ z4 c  C7 }5 Z我返回了nXObject2;
: n9 {7 t. ?# A8 ]1 Y并录制了一个草图拉伸的日志 里面这么写的
; p: N: ~7 t) h/ w2 |! W# DNXOpen.Features.Feature[] features1 = new NXOpen.Features.Feature[1];
    NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)workPart.Features.FindObject("SKETCH(16)");
" M4 w4 Y& @# i, y    features1[0] = sketchFeature1;
: v3 k, g4 F$ l3 f# J$ H0 G* h9 D    Sketch sketch1 =(Sketch)workPart.Sketches.FindObject("SKETCH_00SKETCH_000");
; E4 F+ t) M# x0 d) |7 {    Line line1 = (Line)sketch1.FindObject("Curve Line4");
    Curve nullCurve = null;
0 _' i/ d) g- |2 B, q% H    CurveFeatureChainRule curveFeatureChainRule1;
    curveFeatureChainRule1 = workPart.ScRuleFactory.CreateRuleCurveFeatureChain(features1, line1, nullCurve, false, 0.00095);
2 \. f5 X% X! O6 g   
    section1.AllowSelfIntersection(true);
   
    SelectionIntentRule[] rules1 = new SelectionIntentRule[1];
. X$ p9 {4 Y4 D) x8 h    rules1[0] = curveFeatureChainRule1;
    NXObject nullNXObject = null;
    Point3d helpPoint1 = new Point3d(-18.8530653857088, 21.736029640554, 0.0);
* c# ]0 c4 o! r6 ?8 h: P$ A    section1.AddToSection(rules1, line1, nullNXObject, nullNXObject, helpPoint1, NXOpen.Section.Mode.Create, false);
我把NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)workPart.Features.FindObject("SKETCH(16)");
改成了NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)nXObject2；
8 s0 V1 K7 ~( x7 K% S2 U) i& J- J它报错说无法将 NXOpen.sketchoffset强制转换成NXOpen.features.sketchfeature;

7 p2 [! E8 P. C) U再录一段没有草图的拉伸
# _/ d% q2 U3 [( l& k$ I' F6 @ NXOpen.Features.Feature[] features1 = new NXOpen.Features.Feature[1];
    NXOpen.Features.OffsetCurve offsetCurve1 = (NXOpen.Features.OffsetCurve)nXObject2;//在这写了nXObject2
    features1[0] = offsetCurve1;
5 ~, _, l* M+ p2 S9 V3 y    workPart.Features.SuppressFeatures(features1);
2 S* E! O# i5 Q4 b  ?- ]8 V它报错说无法将 NXOpen.sketchoffset强制转换成NXOpen.Features.OffsetCurve;

求高手告诉我下怎么转换