arcengine 删除gdb要素出错

循环删除要素时，第一个要素可以删掉，第二个报错。
                      
                               IFeatureCursor pFeatufeCursorNJXM = pFeatureClassNJXM.Search(null, true);
                               IFeature pFeatureNJXM = pFeatufeCursorNJXM.NextFeature();
                               while (pFeatureNJXM != null)
                               {
                                   pFeatureNJXM.Delete();
                                   pFeatureNJXM = pFeatufeCursorNJXM.NextFeature();
                              }