VB.NET 2008 DataGridView not Updating Visual Foxpro Database -


i'm using vb.net 2008 datagridview , i'm interfacing visual foxpro 6 database using vfpoledb.1 driver. when change value in description field, changes in datagridview database never gets updated. need use code force changes take place?

here's code i'm using:

imports system.data.oledb  public class form1     dim sconstring string = "provider=vfpoledb.1;data source=c:\mydatabase.dbc;mode=3;"     dim con oledbconnection = new oledbconnection(sconstring)      private function fetchdata()          con.open()         dim ds dataset = new dataset()         dim ssql string         ssql = "select item_cd, item_desc invent;"          dim cmd oledbcommand = new oledbcommand(ssql, con)         dim dainv oledbdataadapter = new oledbdataadapter(cmd)         dim ireccount integer         ireccount = dainv.fill(ds, "invent")         me.datagridview1.datasource = ds.tables("invent").defaultview     end function      private sub btnfetchdata_click(byval sender object, byval e system.eventargs) handles btnfetchdata.click         call fetchdata()     end sub      private sub form1_formclosing(byval sender object, byval e system.windows.forms.formclosingeventargs) handles me.formclosing         con.close()         con = nothing     end sub end class

did code update table , push changes database? don't think so. tried same code sql server 2005, , not working(i don't have foxpro db). modified code , working fine. 

imports system.data.oledb  public class form1     dim sconstring string = "provider=vfpoledb.1;data source=c:\mydatabase.dbc;mode=3;"     dim con oledbconnection = new oledbconnection(sconstring)     dim dainv oledbdataadapter     dim ds dataset = new dataset()     private sub fetchdata()         con.open()         dim ssql string         ssql = "select item_cd, item_desc invent;"         dim cmd oledbcommand = new oledbcommand(ssql, con)         dainv = new oledbdataadapter(cmd)         dim builder new oledbcommandbuilder(dainv)         dim ireccount integer         ireccount = dainv.fill(ds, "invent")         me.datagridview1.datasource = ds.tables("invent").defaultview     end sub      private sub btnfetchdata_click(byval sender object, byval e system.eventargs) handles btnfetchdata.click         call fetchdata()     end sub      private sub form1_formclosing(byval sender object, byval e system.windows.forms.formclosingeventargs)         dainv.update(ds.tables("invent"))         con.close()         con = nothing     end sub end class

hope works :)


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