Solved

Why the cmbcategory.selectedindex change is not working on if condition

Posted on 2012-03-14
3
184 Views
Last Modified: 2012-03-14
Imports System
Imports System.Data
Imports System.Data.SqlClient

Public Class displayitemcodes
    Dim con As SqlConnection
    Dim cmd As SqlCommand
    Dim da As SqlDataAdapter
    Dim dt As DataTable
    Dim s As String

   
    Private Sub cmbcategory_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbcategory.SelectedIndexChanged
        If cmbcategory.SelectedItem.ToString() <> "--Select Category--" Then
            MsgBox("Done")
        End If
    End Sub

    Private Sub displayitemcodes_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        con = New SqlConnection("server=ADMIN-PC\SQLEXPRESS;database=stocktracker;Integrated security=true")
        s = "select distinct category from mstitems"
        da = New SqlDataAdapter(s, con)
        dt = New DataTable()
        da.Fill(dt)

        Dim newCustomersRow As DataRow = dt.NewRow()

        newCustomersRow("category") = "--Select Category--"
        dt.Rows.InsertAt(newCustomersRow, 0)

        With cmbcategory


            .DisplayMember = "category"
            .ValueMember = "category"
            .DataSource = dt




        End With
        cmbcategory.Refresh()
    End Sub
End Class
0
Comment
Question by:searchsanjaysharma
  • 2
3 Comments
 
LVL 3

Accepted Solution

by:
zofcentr earned 500 total points
ID: 37718918
I am not sure whether I understand clearly your problem.
If you are asking why delegate cmbcategory_SelectedIndexChanged has not been called then answer is that maybe you did not have bound this method correctly the event.
Check properties/events of combobox.

If event is raised and method is called but statement (
If cmbcategory.SelectedItem.ToString() <> "--Select Category--") always returns false
then answer is : cmbcategory.SelectedItem.ToString() returns string equal to "System.Data.DataRowView".

Try something like this:
If CType(cmbcategory.SelectedItem, DataRowView)("category").ToString() <> "--Select Category--"
0
 

Author Comment

by:searchsanjaysharma
ID: 37718935
Done, You undestood, Thanx.
0
 

Author Closing Comment

by:searchsanjaysharma
ID: 37718937
ok
0

Featured Post

Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

1.0 - Introduction Converting Visual Basic 6.0 (VB6) to Visual Basic 2008+ (VB.NET). If ever there was a subject full of murkiness and bad decisions, it is this one!   The first problem seems to be that people considering this task of converting…
Creating an analog clock UserControl seems fairly straight forward.  It is, after all, essentially just a circle with several lines in it!  Two common approaches for rendering an analog clock typically involve either manually calculating points with…
In a recent question (https://www.experts-exchange.com/questions/28997919/Pagination-in-Adobe-Acrobat.html) here at Experts Exchange, a member asked how to add page numbers to a PDF file using Adobe Acrobat XI Pro. This short video Micro Tutorial sh…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question