C#: easiest way to populate a ListBox from a List

Try :

List<string> MyList = new List<string>();
MyList.Add("HELLO");
MyList.Add("WORLD");

listBox1.DataSource = MyList;

Have a look at ListControl.DataSource Property

You can also use the AddRange method

listBox1.Items.AddRange(myList.ToArray());

Is this what you are looking for:

myListBox.DataSource = MyList;