C# Listbox selecting items

my For statement is not highlighting/selecting items from the listbox am missing something?

    if (listId.Items.Count != 0 && listCell.Items.Count != 0)
    {
        for (int a = 0; a < listId.Items.Count; a++)
        {
            for (int b = 0; b < listCell.Items.Count; b++)
            {
                MakeReq(txtWebUpdate.Text + listId.Items[a].ToString() + 
                "&brand=1", listCell.Items[b].ToString());
            }
        }
    }

this is an old vb6 code i dug up that i use to use... what it did was loop through a listbox select one entry at a time and also highlighted/selected visually the entry in the listbox. I want to do something just like that开发者_Go百科 with the C# code above

Do Until lstNames.ListCount = 0
  lstNames.ListIndex = 0

  GetMoreNames = ""

  For b = 1 To 1
    GetMoreNames = GetMoreNames & lstNames.Text & ","
    lstNames.RemoveItem lstNames.ListIndex
    lstNames.ListIndex = lstNames.ListIndex + 1
  Next b

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I'm assuming the makeReq is redirecting with a querystring value? Need more code to know see what you're trying to accomplish here.

I don't know why you wouldn't just use a simple ListBox1.SelectedItem.Value;