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
7 A3 K: F+ }  C' Q- s/ CNXObject nXObject2;
5 [. W, t  O) {3 S# m- j) M! l. p    nXObject2 = skeTChOffsetBuilder1.Commit();
$ `5 ?) b  T: ?/ m$ `   
    NXObject[] objects1;
5 \7 S5 W8 N8 F' u+ P: E    objects1 = sketchOffsetBuilder1.GetCommittedObjects();
9 U+ `* J$ |# Y. A5 |" u2 S- B2 k我返回了nXObject2;
' B2 t1 f- j4 x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)");
* T% A6 [  @! j/ R6 H# s/ h# ]2 a4 j    features1[0] = sketchFeature1;
! @* `* M4 U' D9 @. W2 N# f; |2 X* q    Sketch sketch1 =(Sketch)workPart.Sketches.FindObject("SKETCH_00SKETCH_000");
* g4 ~7 M3 M& N: F/ v0 y) l    Line line1 = (Line)sketch1.FindObject("Curve Line4");
4 n" Y, L7 G1 d1 C; n. |    Curve nullCurve = null;
    CurveFeatureChainRule curveFeatureChainRule1;
    curveFeatureChainRule1 = workPart.ScRuleFactory.CreateRuleCurveFeatureChain(features1, line1, nullCurve, false, 0.00095);
8 g$ @' b" C7 I8 J3 U8 Q2 E7 d$ w   
' }% @4 {0 p: z9 D    section1.AllowSelfIntersection(true);
   
    SelectionIntentRule[] rules1 = new SelectionIntentRule[1];
    rules1[0] = curveFeatureChainRule1;
9 r6 k, i( Z% 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)");
4 w( W* H; n+ a2 M) S; U. W  f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;
* d$ E  x4 |, Z( u
5 ]; V4 u* w  J再录一段没有草图的拉伸
4 C' z: }, t+ D* P7 J, `1 E" m* M; A 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;
    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
+ ]7 B- M- a7 O$ ~( |3 p; p# B