I am getting a static value in combobox`

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i am running a program where i am selecting stations from the combobox 'stn_list_'
but when ever I run the code and i select different stations from the combobox.....i got the static value i.e '2ad'
plz help......

VB

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
       con.Open()
       stn_list.Items.Clear()


       Dim cmd4 As New SqlCommand("Select distinct stn from zonemaster", con)
       Dim dr4 As SqlDataReader = cmd4.ExecuteReader
       While (dr4.Read)
           stn_list.Items.Add(IIf(IsDBNull(dr4("stn")), "Null", dr4("stn")))
       End While
       con.Close()
   End Sub

   Protected Sub stn_list_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles stn_list.SelectedIndexChanged
       con.Open()
       party_list.Items.Clear()
       Dim stn As String
       stn = ""

       stn = stn_list.Text


       Dim cmd5 As New SqlCommand("Select  consignor from partymst where left(datatr,3)='" & stn & "'", con)
       Dim dr5 As SqlDataReader = cmd5.ExecuteReader
       While (dr5.Read)
           party_list.Items.Add(IIf(IsDBNull(dr5("consignor")), "Null", dr5("consignor")))
       End While
       con.Close()
   End Sub

Posted 16-Apr-12 18:24pm

ashwani.pandita

Updated 16-Apr-12 19:40pm

walterhevedeich

v2

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Sergey Alexandrovich Kryukov 17-Apr-12 0:39am

Is it ASP.NET? Something else? Please tag it.
--SA

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gqadirshabbir · Answer 1 · 2012-04-16T19:46:00

You just change the code from stn_list.text to stn_list.selectedValue on the form any selected value true of combobox to change with the selected = false.

VB

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
       con.Open()
       stn_list.Items.Clear()


       Dim cmd4 As New SqlCommand("Select distinct stn from zonemaster", con)
       Dim dr4 As SqlDataReader = cmd4.ExecuteReader
       While (dr4.Read)
           stn_list.Items.Add(IIf(IsDBNull(dr4("stn")), "Null", dr4("stn")))
       End While
       con.Close()
   End Sub

   Protected Sub stn_list_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles stn_list.SelectedIndexChanged
       con.Open()
       party_list.Items.Clear()
       Dim stn As String
       stn = ""

       stn = stn_list.SelectedValue;


       Dim cmd5 As New SqlCommand("Select  consignor from partymst where left(datatr,3)='" & stn & "'", con)
       Dim dr5 As SqlDataReader = cmd5.ExecuteReader
       While (dr5.Read)
           party_list.Items.Add(IIf(IsDBNull(dr5("consignor")), "Null", dr5("consignor")))
       End While
       con.Close()
   End Sub