Question

I have a webpart and I want to select mulitple items in a listbox,pretty easy.I am using webcontrols namespace.So I am declaring listbox as
ListBox lBox = new ListBox();
lBox.ID=”lbox”;
lBox.SelectionMode=”Multiple”;

But it is not accepting that . The error I m getting is cannot convert string type to listbox selection sth..

If anyone is having any idea where I m getting wrong?

Thanks,

Answer 1

From Programmatically Select Multiple Items

<div>    
   <asp:ListBox ID="ListBox1" runat="server">
      <asp:ListItem Value="One" />
      <asp:ListItem Value="Two" /> 
      <asp:ListItem Value="Three" />    
      <asp:ListItem Value="Four" /> 
      <asp:ListItem Value="Five" />  
  </asp:ListBox></div>
</div> 

Code behind:

protected void Page_Load(object sender, EventArgs e)
{
   ListBox1.SelectionMode = System.Web.UI.WebControls.ListSelectionMode.Multiple;    
   for (int i = 0; i < ListBox1.Items.Count; i++)    
   {
      // Select the first, third and fifth items in the listbox
      if(i == 0 || i == 2 || i == 4)        
      {
         ListBox1.Items[i].Selected = true; 
      }
   }
}