DataSet DataSet into a collection

 /// <summary>    ///1step: Defining entity Classes/// </summary>    classPhonenum {intpId;  Public intPId {Get{returnPId;} Set{pId =value;} }        intPtypeid;  Public intPtypeid {Get{returnPtypeid;} Set{Ptypeid =value;} }        stringPName;  Public stringPName {Get{returnPName;} Set{PName =value;} }        stringPcellphone;  Public stringPcellphone {Get{returnPcellphone;} Set{Pcellphone =value;} }        stringPhomephone;  Public stringPhomephone {Get{returnPhomephone;} Set{Phomephone =value;} }    }

   /// <summary>        ///2step: How to define Conversions/// </summary>        /// <param name= "DT" ></param>        /// <returns></returns>         Public StaticList<phonenum> getpnlist (DataTable DT)//defining static methods, passing DataTable parameters{List<PhoneNum> pnlist =NULL;//Define a list< entity class > set to be empty            if(dt. Rows.Count >0)//determines whether the obtained DataTable has data, if any, instantiates the List<> collection, otherwise returns an empty collection{pnlist=NewList<phonenum>(); }            Else            {                returnpnlist; }            foreach(DataRow IteminchDt. Rows)//traversing rows in a DataTable{Phonenum temp=NewPhonenum ();//instantiate an entity classtemp. PId= (int) item["PID"];//assigning the corresponding field data in a DataTable row to an entity propertyTemp. Ptypeid = (int) item["Ptypeid"]; Temp. PName= item["pname"].                ToString (); Temp. Pcellphone= item["Pcellphone"].                ToString (); Temp. Phomephone= item["Phomephone"].                ToString (); Pnlist.    ADD (temp); //list<> Collection Add assigned rows            }            returnPnlist;//returns the List<> collection after assignment}

DataSet DataSet is converted to a collection