如何使用lyr文件中的符号来渲染图层

在符号化制图的时候，我们或许已经有了一个lyr的文件，该文件保留了我们符号化的信息，当我们在其他地方配图的时候可能会使用已有的lyr文件来符号化，那么AE是如何做到的呢？整个代码如下：

/// <summary>
        /// 保存lyr文件
        /// </summary>
        /// <param name="pLayerFilePath"></param>
        /// <param name="pLayer"></param>
            public void SaveToLayerFile(System.String pLayerFilePath, ESRI.ArcGIS.Carto.ILayer pLayer)
            {
                if (pLayer == null)
                {
                    return;
                }
                
                ESRI.ArcGIS.Carto.ILayerFile pLayerFile = new ESRI.ArcGIS.Carto.LayerFileClass();

             
                if (System.IO.Path.GetExtension(pLayerFilePath) != ".lyr")
                    return;
                if (pLayerFile.get_IsPresent(pLayerFilePath))
                    System.IO.File.Delete(pLayerFilePath);

        
                pLayerFile.New(pLayerFilePath);

                pLayerFile.ReplaceContents(pLayer);

                pLayerFile.Save();
            }


//替换过程

 private void button13_Click(object sender, EventArgs e)
            {

                IFeatureLayer pFtLayer = axMapControl1.get_Layer(0) as IFeatureLayer;

                ILayer pLayer = GetFileLayer("c:\\Blocks.lyr");

                if (pLayer != null)
                {

                    if (pLayer is IFeatureLayer)
                    {
                        IGeoFeatureLayer pGeoLayer = pFtLayer as IGeoFeatureLayer;

                        pGeoLayer.Renderer = (pLayer as IGeoFeatureLayer).Renderer;

                    }
                }

                axMapControl1.Refresh();


            }

//获取lyr文件

        ILayer GetFileLayer(string pFileName)
            {

                ILayerFile pLayerFile = new LayerFileClass();

                pLayerFile.Open(pFileName);

                return pLayerFile.Layer;
            

           }