sql - Connect a web service to a database and display information -


i beginner vb.net developer , wanted know how create web service , connect sql 2012 database , display item in table. database table has several fields including stock item, manufacturer, free stock quantity, price, etc..

if add breakpoint , step through code, can see value passed string in recordset , returned, however, isn't display properly. i've changed server, username , password thats code shown below.

public class service1 inherits system.web.services.webservice  private sqlconnection adodb.connection  <webmethod()> _ public function showstockitems() string      dim command new sqlcommand      sqlconnection = new adodb.connection     sqlconnection.connectionstring = "driver={sql server};server=server;uid=id;pwd=password;database=able_instruments"     try         sqlconnection.open()         dim strreturn string = ""         dim rststockitem new adodb.recordset         dim strstockitem string = "select * stockitem"         rststockitem.open(strstockitem, sqlconnection)         rststockitem             if not .bof                 .movefirst()                 strreturn = .fields.item("taxcodeid").value             end if![enter image description here][1]         end         rststockitem.close()         sqlconnection.close()         'return strreturn     catch ex exception         end try end function end class

i'm not sure if problem obvious i'd able display id of stock item , name of stock item. example used taxcodeid make sure code working correctly. using visual studio 2010 , have access 2013 if need be.

http://i.stack.imgur.com/kwj14.png

thanks help!

when not using entity framework build classes complexed data retrieval. 

public class stockitem   public property name string   public property id integer   'others needed end class

usage:

<webmethod()> _ public function showstockitems() stockitem  dim _stockitem new stockitem  dim command new sqlcommand  sqlconnection = new adodb.connection  sqlconnection.connectionstring = "driver={sql server};server=server;uid=id;pwd=password;database=able_instruments"  try     sqlconnection.open()     dim strreturn string = ""     dim rststockitem new adodb.recordset     dim strstockitem string = "select * stockitem"     rststockitem.open(strstockitem, sqlconnection)     rststockitem         if not .bof             .movefirst()             _stockitem.id = convert.toint32(.fields.item("taxcodeid").value)             _stockitem.name = .fields.item("what field need).value         end if     end  catch     rststockitem.close()    sqlconnection.close()  end try  return _stockitem end function

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