How to add value in checklistbox

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Hi,
i am trying to add value in checklistbox from database on combobox_SelectedIndexChanged event.

for that i used these code

VB

Dim a, b As Integer
       Dim h As String
       h = Convert.ToString(comboBox3.Text)
       commObj = New OleDbCommand("SELECT Test FROM SubTest WHERE MainTest = '" & h & "' ", cnn)
       myAdapter = New OleDbDataAdapter(commObj)
       myAdapter.Fill(myDataSet1, "cDetails")
       For Each ds As DataRow In myDataSet1.Tables("cDetails").Rows




           CheckedListBox1.Items.Add(ds("SubTest").ToString())
       Next

but main issue is that when i got output in checklistbox that time at list starting we get 8 blank item( blank space ) and later database selected item start

my question is why these 8 space are present there.
i am trying so many possibility but cant get solution :-(
try to help for these problem.

Posted 31-Jan-12 19:53pm

harishtaware

Updated 31-Jan-12 20:12pm

v2

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RDBurmon 1-Feb-12 2:01am

Put the proper values for 'MainTest'

SELECT Test FROM SubTest WHERE MainTest =''

Now my question is when you run this query Have you recevied those 8 empty values as well in the database itself

harishtaware 1-Feb-12 2:06am

no that space not present in database. it show at only in checkboxlist.
and i am selecting proper values for maintest. i got required output but why these space come there at starting :-(

Simon_Whale 1-Feb-12 4:21am

You should also change your SQL Statement to include the use of parameterised queries http://www.4guysfromrolla.com/webtech/092601-1.2.shtml

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Tejas Vaishnav · Answer 1 · 2012-01-31T21:30:00

you need to do like this in your vb code..
first of fill your datatable myDataSet1 with your select query data

C#

CheckedListBox1.DataValueField = "Test";
CheckedListBox1.DataTextField = "Test";
CheckedListBox1.DataSource = myDataSet1;
CheckedListBox1.DataBind();

no need to do like any loop for attaching items to checkbox list