in my silverlight page I am fetching the data through WCF  

WCF is returning an **BusinessEntityCollection** that is the collection of rows  

```
SqlParameter[] sqlParameter = new SqlParameter[]{new SqlParameter("@recordType",recordType)};
                MenuEntity menuEntity;
                MenuEntityCollection menuEntityCollection = new MenuEntityCollection();
                using (SqlDataReader sqlDataReader = SqlHelper.ExecuteReader(_ConnectionString,CommandType.StoredProcedure, <br>StoredProcedures.GetMenus, sqlParameter))
                {
                    if (sqlDataReader.Read())
                    {
                        menuEntity = new MenuEntity();
                        DataAccessHelper.GetEntity(sqlDataReader, menuEntity);
                        menuEntityCollection.Add(menuEntity);
                    }
                }
                return menuEntityCollection;

```

**-->** in silverlight page when I am calling WCF there I am getting an error  

MenuEntity menuList = new MenuEntity();  

 menuList = e.Result; **<-----error line**  

**error:** Cannot implicitly convert type   
'System.Collections.ObjectModel.**ObservableCollection**' to 'FastTrackSLUI.AdminServiceReference.MenuEntity'