如何获取镶嵌数据集中每一个栅格数据的物理路径

private void button2_Click(object sender, EventArgs e)
        {
            IWorkspace pFileWs = GetSDEWorkspace("E:\\影像\\Geodatabase.gdb");

            IMosaicDataset pMosaic = OpenMosaicDataset(pFileWs, "test1");

                      ITable pTable = pMosaic.Catalog as ITable;


             int i = pTable.FindField("RASTER");

                ICursor pCursor = pTable.Search(null, false);

                IRow pRow = pCursor.NextRow();

             
                while (pRow != null)
                {

                    IRasterCatalogItem pRasterCatalogItem = (IRasterCatalogItem)pRow;

 

                    IRasterDataset pRasterdataset = pRasterCatalogItem.RasterDataset;

                    //每一个item不是Raseter所以我用工作空间路径+栅格名称是错误的，用了这个接口就正确了
                    IFunctionRasterDataset pFunctionRD = pRasterdataset as IFunctionRasterDataset;

                    IArray pArray = pFunctionRD.MemberRasterDatasets;

                    for (int n = 0; n < pArray.Count; n++)
                    {
                        IRasterDataset pFunRst= pArray.get_Element(n) as IRasterDataset;
                        string sName = pFunRst.CompleteName;

                    }

                    IDataset pDs = pRasterdataset as IDataset;

                    string s = pDs.Workspace.PathName;

                    pRow = pCursor.NextRow();
                }
        }