为何在运行到SDECur=SDEFeatCls.Insert(true)时出错说对此Class的编辑不在 edit session中啊

<P>    IFeatureClass pFeatCls,SDEFeatCls;
    IFeatureCursor FeatCur,SDECur;
    WkEdit.StartEditing(false);
    SDECur=SDEFeatCls.Insert(true);</P>
<P>......................................................</P>
<P>    WkEdit.StopEditing(true);</P>
<P>为何在运行到SDECur=SDEFeatCls.Insert(true)时出错说对此Class的编辑不在 edit session中啊,我不是包含在WkEdit.StartEditing(false);与WkEdit.StopEditing(true);中了吗??</P>