Listbox multiple selected items

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I am using Listbox with selection mode as multiple.

<asp:ListBox ID="ListBox1" SelectionMode="Multiple"  runat="server">
        <asp:ListItem>one</asp:ListItem>
        <asp:ListItem>two</asp:ListItem>
        <asp:ListItem>thr</asp:ListItem>
        </asp:ListBox>

The following code displays the selected item in Listbox. But how do i display multiple selected items in the listbox.

protected void Button1_Click(object sender, EventArgs e)
    {
// let the array srr be the selected items
        string[] srr = { "one", "thr" };
        foreach (string item in srr)
        {
            ListBox1.SelectedValue = item;
        }
    }

Thanks.

Posted 14-Dec-10 0:20am

test-09

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Comments

senguptaamlan 14-Dec-10 6:31am

where do you want to display and whats the problem that you are facing doing that...please explain a bit more

test-09 14-Dec-10 6:36am

I want to show in the listBox itself. Show selected multiple items. I mentioned it in question.

2 solutions

Solution 1

Check the selected property of each item. Have a look at the example at this link:
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listcontrol.items.aspx[^]

Good luck!

Posted 14-Dec-10 0:31am

E.F. Nijboer

Comments

test-09 14-Dec-10 6:40am

The link has nothing to do with my requirement. I want to show the selected items(multiple) in the LISTBOX.

E.F. Nijboer 14-Dec-10 10:33am

If you look at the example you will find the C# code just below the start of the body. It is quite the same as the code given in the answer of ToniyoJackson. Further is ListBox a descendant of ListControl (obviously) and the methods and properties used are simply inherited.

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Toniyo Jackson · Accepted Answer · 2010-12-14T00:40:00

Solution 2

C#

protected void Button1_Click(object sender, EventArgs e)
{
 string[] srr = { "one", "thr" };
 foreach (string item in srr)
 {
 for (int intItem = 0; intItem &lt;= ListBox1.Items.Count - 1; intItem++) {
      if(ListBox1.Items(intItem).Text == item){
            ListBox1.Items(intItem).Selected = true;
      }
    }
}

Posted 14-Dec-10 0:40am

Toniyo Jackson

Updated 14-Dec-10 0:41am

v3

Comments

m@dhu 14-Dec-10 6:51am

Good one.