Hi,
How to restrict the maximum number of possible selections in a multiple list box or drop-down list in .Net.
In my application i have to restrict the maximum selection must not be greater than 3 from the dropdown list.

Regards
Lily

Is this a Windows form or a Web form? If it is a Windows, it is easy:

----------------------------------------------------

If ListBox1.SelectedItems.Count > 3 Then
     MessageBox.Show("Too many selections.")
Else
     MessageBox.Show("Your selection count is fine.")
End If

----------------------------------------------------

I could be wrong, but I don't believe there is a SelectedItems Count property in a web form, so you could do something like this:

----------------------------------------------------

Dim intCntr As Int32 = 0
Dim itm As ListItem

For Each itm In ListBox1.Items
   If itm.Selected = True Then
      intCntr += 1
   End If
Next

If intCntr > 3 Then
   Label1.Text = "Too many selections."
Else
   Label1.Text = "Your selection count is fine."
End If

----------------------------------------------------

J

Thanks a lot , the second portion has worked out.