C#

<br />
private ArrayList Cats = new ArrayList(); //The arraylist source for the ListBox<br />
...<br />
//some items are added here<br />
...<br />

<br />
private void bRemoveCat_Click(object sender, System.EventArgs e)<br />
		{<br />
			int selIndex = this.CatList.SelectedIndex;<br />
<br />
			this.CatList.DataSource = null;<br />
			this.CatList.Items.Clear();<br />
			<br />
			Cats.RemoveAt(selIndex);<br />
			<br />
			this.CatList.DataSource = Cats;<br />
			this.CatList.DisplayMember = "Name";<br />
			this.CatList.ValueMember = "ID";<br />
		}<br />

<br />
An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll<br />
<br />
Additional information: Index was out of range.  Must be non-negative and less than the size of the collection.<br />

public class MyStuff
{
 string stuff;

 public MyStuff()
 {}

 public MyStuff(string NewValue)
 {
   stuff = NewValue;
 }

 public Stuff
 {
    get{return stuff;}
    set{stuff = value;}
 }
}

arraylist MyList = new arraylist;

for (int iI = 0, ii <10, ii++)
  mylist.add(new MyStuff(ii.tostring()))

datgrid1.datasource = MyList

public class MySecondStuff
{
 string stuff;

 public MySecondStuff(string NewValue)
 {
   stuff = NewValue;
 }

 public Stuff
 {
    get{return stuff;}
    set{stuff = value;}
 }
}

public class MyStuff
{
 string stuff;
 arraylist arList = new arraylist();

 public MyStuff(string NewValue)
 {
   stuff = NewValue;
   for (int iI = 0, ii <10, ii++)
     arList.add(new MySecondStuff(ii.tostring()))
 }

 public Stuff
 {
    get{return stuff;}
    set{stuff = value;}
 }
}

//and then

arraylist MyList = new arraylist;

for (int iI = 0, ii <10, ii++)
  mylist.add(new MyStuff(ii.tostring()))

datgrid1.datasource = MyList