Improve company productivity with a Business Account.Sign Up

x
?
Solved

In ComboBox, Adding - Select Item on index -1

Posted on 2010-08-25
12
Medium Priority
?
267 Views
Last Modified: 2013-11-27

VS 2005 / Vb.Net

 cmbState.DataSource = objDs.Tables(0)
        cmbState.Items.Insert(-1, "-- Select --")
        cmbState.DisplayMember = "StateShortName"
        cmbState.ValueMember = "StateID"
0
Comment
Question by:chokka
  • 5
  • 3
  • 2
  • +1
12 Comments
 
LVL 10

Expert Comment

by:Jini Jose
ID: 33523177
add the ListItem "select" in the html section in design time.
then set the property AppendDataItems = true
0
 
LVL 10

Expert Comment

by:Jini Jose
ID: 33523187
sorry it is for web
0
 

Author Comment

by:chokka
ID: 33523229
ComboBox .. Its windows App .. ( VB.Net / VS 2005 )
0
Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

 
LVL 1

Expert Comment

by:narendragummadi
ID: 33523384
Do you want to insert "-- Select --" as frist entry in the combobox?
0
 

Author Comment

by:chokka
ID: 33523458
yes
0
 
LVL 17

Expert Comment

by:Zhaolai
ID: 33523479
-1 is not a valid index. Index is 0-based.
If you want to add "--Select--" as the first item in the combobox, you can do either of the following:

1. cmbState.Items.Insert(0, "-- Select --")
or
2. cmbState.Items.Add("-- Select --")
 before populating the records.

0
 

Author Comment

by:chokka
ID: 33523545


1. cmbState.Items.Insert(0, "-- Select --")
or
2. cmbState.Items.Add("-- Select --")
 before populating the records.


I tried both the ways .. But value is not reflecting in ComboBox.
Do i need to change some property settings in the ComboBox
0
 

Author Comment

by:chokka
ID: 33523554


Thats the actual Code

Public Sub PopulateDState()
        Dim objBL As New BusinessLayer.BusinessLayer
        Dim objDs As New DataSet
        objDs = objBL.PopulateState()

        'cmbDState.Items.Insert(0, "-- Select --")
        cmbDState.Items.Add("-- Select --")
        cmbDState.DataSource = objDs.Tables(0)

        cmbDState.DisplayMember = "StateShortName"
        cmbDState.ValueMember = "StateID"
    End Sub
0
 
LVL 17

Expert Comment

by:Zhaolai
ID: 33523598
Add the following line after the combo box is populated:

cmbDState.SelectedIndex = 0
0
 

Author Comment

by:chokka
ID: 33523626

I have added ... But still its not working ..!

I have kept the ComboBox inside a Panel .. was it a reason ?


    Public Sub PopulateState()
        Dim objBL As New BusinessLayer.BusinessLayer
        Dim objDs As New DataSet
        objDs = objBL.PopulateState()
        'cmbState.Items.Insert(0, "-- Select --")
        cmbState.Items.Add("-- Select --")
        cmbState.DataSource = objDs.Tables(0)

        cmbState.DisplayMember = "StateShortName"
        cmbState.ValueMember = "StateID"
        cmbState.SelectedIndex = 0
    End Sub
0
 
LVL 1

Accepted Solution

by:
narendragummadi earned 2000 total points
ID: 33523732
First add a new row to the dataset you are binding to the combobox and set values for the row and then insert that row at first postion.

Dim dr As DataRow = objDs.Tables(0).NewRow()
' create a new row into the dataset
dr(0) = "-- Select --"
dr(1) = 1102
.
.
.
objDs.Tables(0).Rows.InsertAt(dr, 0)

and now bind your dataset to the combo box
0
 
LVL 17

Expert Comment

by:Zhaolai
ID: 33524058
@narendragummadi's solution should work. You may want to check out this link:

http://www.codeproject.com/KB/combobox/addselecttoboundcombo.aspx

The code is in C#, but you can easily convert it to VB.NET here:
http://www.developerfusion.com/tools/convert/csharp-to-vb/

0

Featured Post

Get your problem seen by more experts

Be seen. Boost your question’s priority for more expert views and faster solutions

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Hello there! As a developer I have modified and refactored the unit tests which was written by fellow developers in the past. On the course, I have gone through various misconceptions and technical challenges when it comes to implementation. I would…
Hi, this video explains a free download that you can incorporate into your Access databases, or use stand-alone for contact management. Contacts -- Names, Addresses, Phone Numbers, eMail Addresses, Websites, Lists, Projects, Notes, Attachments…
Free Data Recovery software is an advanced solution from Kernel Tools to recover data and files such as documents, emails, database, media and pictures, etc. It supports recovery from physical & logical drive after a hard disk crash, accidental/inte…

602 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