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
' I7 d- `# L* q1 c5 |# WNXObject nXObject2;
    nXObject2 = skeTChOffsetBuilder1.Commit();
) H3 F: H$ ?, ]) c   
    NXObject[] objects1;
    objects1 = sketchOffsetBuilder1.GetCommittedObjects();
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];
    NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)workPart.Features.FindObject("SKETCH(16)");
    features1[0] = sketchFeature1;
    Sketch sketch1 =(Sketch)workPart.Sketches.FindObject("SKETCH_00SKETCH_000");
/ Q) V9 C  t: h5 ~+ G- ^4 s. h    Line line1 = (Line)sketch1.FindObject("Curve Line4");
# w" H  ]$ m! m1 B$ J    Curve nullCurve = null;
    CurveFeatureChainRule curveFeatureChainRule1;
; w& l) c( Y) r+ F+ u- F, T    curveFeatureChainRule1 = workPart.ScRuleFactory.CreateRuleCurveFeatureChain(features1, line1, nullCurve, false, 0.00095);
   
  }$ D$ C' y+ a% w8 x( D* h    section1.AllowSelfIntersection(true);
   
    SelectionIntentRule[] rules1 = new SelectionIntentRule[1];
    rules1[0] = curveFeatureChainRule1;
" l- d6 B8 l, l3 z    NXObject nullNXObject = null;
- F0 T" r' A& I2 G5 x6 [/ I* R+ B    Point3d helpPoint1 = new Point3d(-18.8530653857088, 21.736029640554, 0.0);
) \+ g* z$ W9 J% ~) a. y; |+ n    section1.AddToSection(rules1, line1, nullNXObject, nullNXObject, helpPoint1, NXOpen.Section.Mode.Create, false);
( C$ }' P, C) A我把NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)workPart.Features.FindObject("SKETCH(16)");
7 W; e- ~0 b' L4 w; B" y改成了NXOpen.Features.SketchFeature sketchFeature1 = (NXOpen.Features.SketchFeature)nXObject2；
它报错说无法将 NXOpen.sketchoffset强制转换成NXOpen.features.sketchfeature;
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. N( Y' _9 Y$ o, z- c再录一段没有草图的拉伸
, Z  z- J3 ]! h NXOpen.Features.Feature[] features1 = new NXOpen.Features.Feature[1];
$ o4 h3 N( v  y( x    NXOpen.Features.OffsetCurve offsetCurve1 = (NXOpen.Features.OffsetCurve)nXObject2;//在这写了nXObject2
& [( w- [8 T3 r4 o5 S    features1[0] = offsetCurve1;
1 v# P9 Z/ i) b; f' `( j- F& H- r    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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