For a web-form you can do this:
//GENERIC FUNCTION FOR SORTING A LIST BOX
private void SortListBox(ListBox currList)
{
//COPY THE MEMBERS OF THE LISTBOX INTO AN ARRAY LIST
ArrayList arraylist = new ArrayList();
foreach(ListItem li in currList.Items)
{
arraylist.Add(li);
}
arraylist.Sort(new ListObject(ListObject.Directions.ascending)); //SORT THE LIST - ASCENDING
//REMOVE THE EXISTING ITEMS FROM LISTBOX
currList.Items.Clear();
//RE-ADD THE SORTED ITEMS TO THE LISTBOX
for(int i = 0 ; i < arraylist.Count ; i++)
{
currList.Items.Add((ListItem) arraylist[i]);
}
currList.SelectedIndex = -1; //ENSURE NO SELECTED ITEM
}
//*** NEED THIS FOR ARRAY-LIST SORTING: ***
private class ListObject : IComparer
{
public enum Directions : int { ascending = 1, descending = (-1) };
private int direction = (int) ListObject.Directions.ascending;
public ListObject() {}
public ListObject(Directions direction) {
this.direction = (int) direction;
}
public int Compare(object x, object y)
{
string xstring = ((ListItem) x).Text;
string ystring = ((ListItem) y).Text;
return xstring.CompareTo(ystring) * this.direction;
}
}
//*******************************************[
