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Setting the selected index of a combobox with only a value

Posted on 2006-07-12
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Last Modified: 2012-05-05
I need to be able to set the selectedindex of a combobox by only knowing the value that it needs to be selected to.

cb.DropDownStyle = ComboBoxStyle.DropDownList

    If Not dtForm.Rows(R).Item("UserSelection") = "NULL" Then
       cb.SelectedValue = dtForm.Rows(R).Item("UserSelection")
 End If


 dtForm.Rows(R).Item("UserSelection") will give me say the string "TESTING123", "TESTING123" has already been added to that combox but it needs to be selected because  dtForm.Rows(R).Item("UserSelection") returned "TESTING123".


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Question by:JPERKS1985
6 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 17097497
Dim index as Integer
index = cb.FindStringExact(dtForm.Rows(R).Item("UserSelection"))

if index >= 0 then
  cb.SelectedIndex = index
end if
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LVL 19

Accepted Solution

by:
arif_eqbal earned 500 total points
ID: 17097512
I think just
    cb.SelectedItem = "TESTING123"
would also work, if the items added to the Combo are just text

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LVL 9

Expert Comment

by:lojk
ID: 17098960
When a databound combobox is set to dropdownlist i find that simply combobox.text="Description" seems to set the correct item.
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LVL 1

Author Comment

by:JPERKS1985
ID: 17105273
none of these suggestions have worked. what a weird problem.
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Author Comment

by:JPERKS1985
ID: 17105281
There was code below that code that would reset the values

  If Not dtForm.Rows(R).Item("UserSelection") = "NULL" Then
                  cb.SelectedItem = dtForm.Rows(R).Item("UserSelection")
            End If


Ended up working once I moved the code below the ocnflicting code. Thanks everyone.
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LVL 1

Expert Comment

by:Emanuele_Ciriachi
ID: 20341689
Oh, and I found out why: I was using reflection, so that when I call

frm.Visible = True

its LoadData method is fired; this method will mess up with the global OleDbDataReader which is my DR, making a mess. Now I fixed everything using a different, custom DataReader in this function, and not the global one. Sorry for wasting your time, thanks anyway.
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