vb.net - Failure to Execute UPDATE Query in ASP.net using VB -


i have been searching in several forums including 1 trouble facing.

currently developing website using visual studio 2017 , database runs ms access 2007. problem facing perhaps not error, because not show error messages, although have put try , catch on codes.

so trying execute update query table have in access fails update. purpose update table called 'datadirikaryawan'.

prior updating, select data per 'nip' (id primary key) , display on web form calling function 'isi' on page_load. users able edit data based on preexisting data. 

 protected sub page_load(byval sender object, byval e system.eventargs) handles me.load     session("editval") = "wamb17001"     isi() end sub    protected sub isi()     dim dr oledb.oledbdatareader     dim nip string = session("editval")      try         using command new oledb.oledbcommand("select * datadirikaryawan nip='" & nip & "'", mdl_koneksi.connection)             dr = command.executereader             dr.read()              lblnip.text = dr.getvalue(0)             txtnamadepan.text = dr.getvalue(1)             txtnamabelakang.text = dr.getvalue(2)             txtnoktp.text = dr.getvalue(3)             txtnonpwp.text = dr.getvalue(4)             txtalamatktp.text = dr.getvalue(5)             txtkabktp.text = dr.getvalue(6)             txtprovinsiktp.text = dr.getvalue(7)             txtkodeposktp.text = dr.getvalue(8)             txtnegaraktp.text = dr.getvalue(9)              txtalamattgl.text = dr.getvalue(10)             txtkabtgl.text = dr.getvalue(11)             txtprovtgl.text = dr.getvalue(12)             txtkodepostgl.text = dr.getvalue(13)             txtnegaratgl.text = dr.getvalue(14)              txtkontak1.text = dr.getvalue(15)             txtkontak2.text = dr.getvalue(16)             txtkontakdarurat.text = dr.getvalue(17)             txthbgn.text = dr.getvalue(18)              if dr.getvalue(19) = "laki-laki"                 rblaki.checked = true             else                 rbperempuan.checked = false             end if              txtnikah.text = dr.getvalue(20)             txtjmlhanak.text = dr.getvalue(21)             txttmptlahir.text = dr.getvalue(22)             txttgllahir.text = dr.getvalue(23)             txtpendidikan.text = dr.getvalue(24)             txtnorek.text = dr.getvalue(25)              command.dispose()             connection.close()             dr.close()          end using     catch      end try

upon editing of data in web form update query executed.

private sub simpan()     dim nip string = session("editval")      try         using command new oledb.oledbcommand("update datadirikaryawan set nama_depan=@nama_depan, nama_akhir=@nama_akhir, ktp_no=@ktp_no, no_npwp=@no_npwp, alamat_ktp=@alamat_ktp,          kota_ktp=@kota_ktp, provinsi_ktp=@provinsi_ktp, kodepos_ktp=@kodepos_ktp, negara_ktp=@negara_ktp, alamat_tgl=@alamat_ktp, kota_tgl=@kota_tgl, provinsi_tgl=@provinsi_tgl,         kodepos_tgl=@kodepos_tgl, negara_tgl=@negara_tgl, cp1=@cp1, cp2=@cp2, kontak_darurat=@kontak_darurat, hbgn_kontak=@hbgn_kontak, jenis_kelamin=@jenis_kelamin, status_nikah=@status_nikah,         jmlh_anak=@jmlh_anak, tempat_lahir=@tempat_lahir, tgl_lahir=@tgl_lahir, pendidikan_terakhir=@pendidikan_terakhir, rek_niaga=@rek_niaga nip='" & nip & "'", mdl_koneksi.connection)             command.parameters.add(new oledb.oledbparameter("@nama_depan", oledbtype.char)).value = txtnamadepan.text             command.parameters.add(new oledb.oledbparameter("@nama_akhir", oledbtype.char)).value = txtnamabelakang.text             command.parameters.add(new oledb.oledbparameter("@ktp_no", oledbtype.char)).value = txtnoktp.text             command.parameters.add(new oledb.oledbparameter("@no_npwp", oledbtype.char)).value = txtnonpwp.text             command.parameters.add(new oledb.oledbparameter("@no_npwp", oledbtype.char)).value = txtnonpwp.text             command.parameters.add(new oledb.oledbparameter("@alamat_ktp", oledbtype.char)).value = txtalamatktp.text             command.parameters.add(new oledb.oledbparameter("@kota_ktp", oledbtype.char)).value = txtkabktp.text             command.parameters.add(new oledb.oledbparameter("@kota_ktp", oledbtype.char)).value = txtkabktp.text             command.parameters.add(new oledb.oledbparameter("@provinsi_ktp", oledbtype.char)).value = txtprovinsiktp.text             command.parameters.add(new oledb.oledbparameter("@kodepos_ktp", oledbtype.char)).value = txtkodeposktp.text             command.parameters.add(new oledb.oledbparameter("@negara_ktp", oledbtype.char)).value = txtnegaraktp.text              command.parameters.add(new oledb.oledbparameter("@alamat_tgl", oledbtype.char)).value = txtalamattgl.text             command.parameters.add(new oledb.oledbparameter("@kota_tgl", oledbtype.char)).value = txtkabtgl.text             command.parameters.add(new oledb.oledbparameter("@provinsi_tgl", oledbtype.char)).value = txtprovtgl.text             command.parameters.add(new oledb.oledbparameter("@kodepos_tgl", oledbtype.char)).value = txtkodepostgl.text             command.parameters.add(new oledb.oledbparameter("@negara_tgl", oledbtype.char)).value = txtnegaratgl.text              command.parameters.add(new oledb.oledbparameter("@cp1", oledbtype.char)).value = txtkontak1.text             command.parameters.add(new oledb.oledbparameter("@cp2", oledbtype.char)).value = txtkontak2.text             command.parameters.add(new oledb.oledbparameter("@kontak_darurat", oledbtype.char)).value = txtkontakdarurat.text             command.parameters.add(new oledb.oledbparameter("@hbgn_kontak", oledbtype.char)).value = txthbgn.text              if rblaki.checked = true                 command.parameters.add(new oledb.oledbparameter("@jenis_kelamin", oledbtype.char)).value = rblaki.text             else                 command.parameters.add(new oledb.oledbparameter("@jenis_kelamin", oledbtype.char)).value = rbperempuan.text             end if              command.parameters.add(new oledb.oledbparameter("@status_nikah", oledbtype.char)).value = txtnikah.text             command.parameters.add(new oledb.oledbparameter("@jmlh_anak", oledbtype.char)).value = txtjmlhanak.text             command.parameters.add(new oledb.oledbparameter("@tempat_lahir", oledbtype.char)).value = txttmptlahir.text             command.parameters.add(new oledb.oledbparameter("@tgl_lahir", oledbtype.char)).value = txttgllahir.text              command.parameters.add(new oledb.oledbparameter("@pendidikan_terakhir", oledbtype.char)).value = txtpendidikan.text             command.parameters.add(new oledb.oledbparameter("@rek_niaga", oledbtype.char)).value = txtnorek.text             command.parameters.add(new oledb.oledbparameter("@nip", oledbtype.char)).value = lblnip.text               command.executenonquery()             command.dispose()             connection.close()             session("editval") = ""             page.response.redirect("frmredirectinsertdata.aspx")         end using     catch ex exception         lblpesan.visible = true         msgbox(ex.message)      end try end sub

then function 'simpan', containing update query called in btnsimpan.click. 

protected sub btnsimpan_click(sender object, e eventargs) handles btnsimpan.click     simpan()     session("editval") = "" end sub

now here anomalies:

  1. despite having try catch, not shown error messages. web form refreshed same data previous , table in ms access not updated.

  2. if did not call function 'isi' on page_load fill web form preexisting data, update query works find.

  3. i have used same methods , codes in other forms different tables , worked fine.

i have been spending couple of days now, trying compare tables in access , codes in visual studio , have found no difference of codes , settings/properties.

thus, may need kind assistance solve problems. cheers!


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