C# How do I do I loop through items in a list box and then remove that item?

foreach (string s in listBox1.Items)
{
 MessageBox.Show(s);
 //do stuff with (s);
 listBox1.Items.Remove(s);
}

listBox1.BeginUpdate();
try {
  for(int i = listBox1.Items.Count - 1; i >= 0 ; i--) {
    // do with listBox1.Items[i]

    listBox1.Items.RemoveAt(i);
  }
} finally {
  listBox1.EndUpdate();
}

List<string> removals = new List<string>();
foreach (string s in listBox1.Items)
{
    MessageBox.Show(s);
    //do stuff with (s);
    removals.Add(s);
}

foreach (string s in removals)
{
    listBox1.Items.Remove(s);
}

while (listBox1.Items.Count > 0)
{
  string s = listBox1.Items[0] as string;
  // do something with s
  listBox1.Items.RemoveAt(0);
}

for (int i = 0; i < listBox1.Items.Count; ++i)
{
   // ...
   listBox1.Items.RemoveAt(i--);
}

for i as integer= list.items.count-1 to 0 step -1
....
list.items.removeat(i)
next

for (var i == list.Items.Count - 1; i >= 0; i--)
{
    list.Items.RemoveAt(i);
}

foreach(var s in listBox1.Items.ToArray())
{
    MessageBox.Show(s);
    //do stuff with (s);
    listBox1.Items.Remove(s);
}