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
NXObject nXObject2;
7 U" L" A" W4 `; Y1 X: Q    nXObject2 = skeTChOffsetBuilder1.Commit();
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8 o$ N  X8 R/ ]. U& s6 p+ e. @    NXObject[] objects1;
    objects1 = sketchOffsetBuilder1.GetCommittedObjects();
5 m' H; \) X0 N8 P/ M: `# s; G+ F我返回了nXObject2;
并录制了一个草图拉伸的日志 里面这么写的
NXOpen.Features.Feature[] features1 = new NXOpen.Features.Feature[1];
: s; m) G) G8 ]6 T1 r2 B' ^5 X, Y    NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)workPart.Features.FindObject("SKETCH(16)");
/ R  ]+ j* \1 K    features1[0] = sketchFeature1;
4 I, T7 ^1 w7 p    Sketch sketch1 =(Sketch)workPart.Sketches.FindObject("SKETCH_00SKETCH_000");
    Line line1 = (Line)sketch1.FindObject("Curve Line4");
* K5 Z; o! |" v# P" j6 P    Curve nullCurve = null;
    CurveFeatureChainRule curveFeatureChainRule1;
+ c9 u7 G7 T$ m1 _    curveFeatureChainRule1 = workPart.ScRuleFactory.CreateRuleCurveFeatureChain(features1, line1, nullCurve, false, 0.00095);
   
& z& d9 o$ n. l. t0 V4 l  t( j7 c    section1.AllowSelfIntersection(true);
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3 p' ]/ ~' m( e* p3 w5 A5 N; N    SelectionIntentRule[] rules1 = new SelectionIntentRule[1];
    rules1[0] = curveFeatureChainRule1;
3 g5 t4 w" M4 O2 i  O5 ~0 r    NXObject nullNXObject = null;
    Point3d helpPoint1 = new Point3d(-18.8530653857088, 21.736029640554, 0.0);
    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；
$ d8 X3 J2 z( k, F- r( b它报错说无法将 NXOpen.sketchoffset强制转换成NXOpen.features.sketchfeature;

3 G; h4 _& Q6 o5 M* k再录一段没有草图的拉伸
NXOpen.Features.Feature[] features1 = new NXOpen.Features.Feature[1];
) V& N# j+ r" r' T    NXOpen.Features.OffsetCurve offsetCurve1 = (NXOpen.Features.OffsetCurve)nXObject2;//在这写了nXObject2
3 u$ y! M, W2 }' `; [    features1[0] = offsetCurve1;
3 ?+ w8 A3 ]6 }" h  x* t    workPart.Features.SuppressFeatures(features1);
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
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