combobox in vb.net2008

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I have a combobox as a dropdown showing customername and combobox for car plateno and some other controls

on cmbCustomernmae leave iam settign datasource for cmbPlateno as all plateno for that customer from database.

im using vb.net 2008 mssql 2005 windows app. code is as below:

VB

 Private Sub cmbCustomerName_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmbCustomerName.Leave
    
'Code for fill datatable -removed here for easy reading
    cmbPlateNo.ValueMember = "car_id"
            cmbPlateNo.DisplayMember = "plate_no"
         cmbPlateNo.DataSource = dt
            cmbPlateNo.SelectedIndex = -1
end sub

the problem is behind the scenes it fills cmbplateno with each row of dt and setting text and then finally it makes selectedIndex as -1

As i have lot of functions related to this it shows each value on cmbplateno ..am id oing it right or is their anyother way of doing this.
plz help

Posted 1-Jun-13 4:56am

afreen_2010

Updated 1-Jun-13 5:03am

Ron Beyer

v2

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Basmeh Awad · Answer 1 · 2013-06-01T06:07:00

try this

VB

Private Sub cmbCustomerName_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmbCustomerName.Leave
    
'Code for fill datatable -removed here for easy reading
    cmbPlateNo.ValueMember = "car_id"
            cmbPlateNo.DisplayMember = "plate_no"
         cmbPlateNo.DataSource = dt.Tables(0) 'you forgot this
            cmbPlateNo.SelectedIndex = -1
end sub

afreen_2010 · Answer 2 · 2013-06-02T19:43:00

Solution 2

cmbPlateNo.DataSource = dt

I havent forgot that. I have already written it and Im using datatable not dataset

Posted 2-Jun-13 19:43pm