删除SDE中要素,依据属性条件删除SDE某要素集中满足要求的要素

#region 删除要素集满足某条件指定要素3
    /// <summary>
    /// 删除要素集满足某条件指定要素
    /// </summary>
    /// <param name="workspace"></param>
    /// <param name="featureclass"></param>
    public static void DeleteSDEFeature3()
    {
        //删除要素集满足某条件指定要素条件 线路编码=G321
        string featureclass = "SDE.RoadLines";//SDE中要素集名称
        string strKey = "G321";//删除的道路要素 线路编码

        //打开SDE工作空间
        IPropertySet pProSet = new PropertySetClass();
        pProSet.SetProperty("Server", "service");
        pProSet.SetProperty("Instance", "5151");
        pProSet.SetProperty("Database", "sde");
        pProSet.SetProperty("user", "sde");
        pProSet.SetProperty("password", "sdepassword");
        pProSet.SetProperty("version", "sde.DEFAULT");
        IWorkspaceFactory factory = new SdeWorkspaceFactoryClass();
        IWorkspace WKS = factory.Open(pProSet, 0);

      
        ESRI.ArcGIS.Geodatabase.IFeatureWorkspace featureWorkspace = (ESRI.ArcGIS.Geodatabase.IFeatureWorkspace)WKS;
        ESRI.ArcGIS.Geodatabase.IFeatureClass featureClass = featureWorkspace.OpenFeatureClass(featureclass);
        ESRI.ArcGIS.Geodatabase.IWorkspaceEdit workspaceEdite = (ESRI.ArcGIS.Geodatabase.IWorkspaceEdit)WKS;
        workspaceEdite.StartEditing(true);
        workspaceEdite.StartEditOperation();


       
        ESRI.ArcGIS.Geodatabase.IQueryFilter que = new QueryFilterClass();
        que.WhereClause = "线路编码='" + strKey + "'";
        ESRI.ArcGIS.Geodatabase.IFeatureCursor ifc = featureClass.Search(que, true);
        ESRI.ArcGIS.Geodatabase.IFeature fedel = ifc.NextFeature();
        while (fedel != null)
        {
            fedel.Delete();
            fedel = ifc.NextFeature();
        }


        bool hasEdits = false;
        workspaceEdite.HasEdits(ref hasEdits);
        if (hasEdits)
        {
            workspaceEdite.StopEditing(true);
        }
    }
    #endregion