Convert sharepoint SpListCollection in Datatable with decoded

using (SPSite oSite = new SPSite(SPContext.Current.Site.Url))
                                    {
                                        using (SPWeb oWeb = oSite.OpenWeb())
                                        {
                                            SPListCollection oListCollection = oWeb.Lists;

                                            SPList oList = oWeb.Lists["List1"];

                                            SPListItemCollection oItems = oList.GetItems();

                                            DataTable dtFirst = ConvertSPListToDataTable(oItems);
}}
private static DataTable SPListToDataTable(SPListItemCollection spItemCollection)
        {
            DataTable dt = new DataTable();

            try
            {
                dt = spItemCollection.GetDataTable();
                foreach (DataColumn c in dt.Columns)
                    c.ColumnName = System.Xml.XmlConvert.DecodeName(c.ColumnName);
                return (dt);

            }
            catch
            {
                return (dt);
            }
        }