Once you have that property set, you can retrieve the values of what was selected in code behind by looping through the listbox.
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asp.net vb.net select multiple items in Listbox
How can select multiple items in a asp.net listbox
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Answers
To allow users to select multiple values from a listbox, you need to set two properties, such as rows and SelectionMode. The value for rows can be any integer and for Selectionmode, it will be Multiple. To retrieve the all the values selected by the user, we need to make use of the properties such as Items.Count. And the property, selected will tell us whether the item have been selected or not. See the following example.
Listbox Web Server Control -
Sub mySub(sender As Object, e As EventArgs)
If lstStates.SelectedIndex > - 1
lblMsg.Text=""
Dim ctr as Integer
For ctr=0 to lstStates.Items.Count()-1
If lstStates.items(ctr).selec
lblMsg.Text += " You selected " & lstStates.items(ctr).Text & ""
end if
Next
End If
End Sub
ASP.NET Listbox Server Control
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spprivate - if you're going to copy and paste somebody elses article I think it's common courtesy to at least put the link to it to give the original author the credit they're due.
http://www.coders2020.com/
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by: arhamePosted on 2009-04-14 at 11:47:00ID: 24141240
There is a property on the listbox you can set the "Selection Mode" to multiple.