Question

I have been trying to find out how to bind data to a
System.Windows.Forms.DomainUpDown() control.

Currently I have only come up with:

        private void Init()         {             List<string> list = new List<string>();             list = get4000Strings(); //4000 items              foreach (string item in list)             {                 domainUpDown1.Items.Add(item);              }          }          private List<string> get4000Strings()         {             List<string> l = new List<string>();             for (int i = 0; i < 4000; i++)             {                 l.Add(i.ToString());             }             return l;         } 

Answer 1

The DomainUpDown.Items collection has an AddRange() method that takes an ICollection (implemented by List<T>), so you could just do

private void Init() {   List<string> list = new List<string>();   list = get4000Strings(); //4000 items   domainUpDown1.Items.Clear();   domainUpDown1.Items.AddRange(list); } 

However, if you have that much items to show, I would suggest you use a ComboBox having DropDownStyle set to DropDownList. It will allow you to databind directly to the list (e.g. comboBox1.DataSource = list;), especially if the list changes often, as you won’t have to refill the ComboBox each time, just change the datasource…