TOCControl中图层名称不显示的问题

今天使用AO的TOCControl来显示图层名字，但是无论怎么样，TOCControl就是无法显示加入的shapefile的名称。后来才知道，原来加入shapefile时，没有规定图层的名字。代码如下，希望以后遇到这个问题的朋友能够少走弯路。

                            pMap = pHookHelper.FocusMap;

                            pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();

                            pFeatureLayer = new FeatureLayerClass();

                            pFeatureWorkspace = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(Path.GetDirectoryName(openFileDialog.FileName), 0);

                            pFeatureLayer.FeatureClass = pFeatureWorkspace.OpenFeatureClass(Path.GetFileName(openFileDialog.FileName));

                            //这句话必须加上，否则该Layer名字将为“”，TOCContronl内的名称也不显示！

                            pFeatureLayer.Name = pFeatureLayer.FeatureClass.AliasName;

                            pMap.AddLayer(pFeatureLayer);

                            pMap.MapUnits = ESRI.ArcGIS.esriSystem.esriUnits.esriMeters;//必须设定单位，否则比例尺无法计算

                            ((IActiveView)pMap).Refresh();