Problem trying to select all items in listbox

[DCount17]

I have used the following code, but I get an error. I'm using C#. When the
checkbox is selected, I want to select all items in lstTeams (90 items) so
the user doesn't have to manually select each item:

private void chkAllTeams_CheckedChanged(object sender, System.EventArgs e)
{
//If the user selects "Select All Teams" checkbox, highlight (select all
items).
lstTeams.SelectionMode=SelectionMode.MultipleSimpl e;
// Loop through all items the ListBox (lstTeams).
for (int x = 0; x < lstTeams.Items.Count; x++)
{
lstTeams.SelectedIndex = x;
}
}
The error is: The type or namespace name 'SelectionMode' could not be found
(are you missing a using directive or an assembly reference?)

Is there a using System.? that I need to include to get Listbox property to
display?
--
DCount

[Paul Wohlhart]

> The error is: The type or namespace name 'SelectionMode' could not be found

(are you missing a using directive or an assembly reference?)

Is there a using System.? that I need to include to get Listbox property to
display?

msdn is your friend:

http://msdn.microsoft.com/library/de...classtopic.asp

-> using System.Windows.Forms;
also i think you should use

SetSelected(x,true);

instead of

SelectedIndex = x;