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C# DomainUpDown Control Example

DomainUpDown. How can you present a limited selection of options? This should use only minimal screen space. In Windows Forms, you can provide a DomainUpDown control, which allows users to select one of several items.
Example. First, to add a DomainUpDown control, drag it from the Toolbox to the Window. A good place to initialize the DomainUpDown control is in the Load event of the enclosing form. Please double-click on the enclosing form to create this event.

Next: We add several items to the DomainUpDown control. The current item can be determined or set with the Text property.

C# program that uses DomainUpDown control using System; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { // Items. DomainUpDown.DomainUpDownItemCollection items = this.domainUpDown1.Items; items.Add("Dot"); items.Add("Net"); items.Add("Perls"); // Set Text. this.domainUpDown1.Text = "Dot"; } private void domainUpDown1_SelectedItemChanged(object sender, EventArgs e) { // Run code every time the item is changed. this.Text = domainUpDown1.Text; } } }
SelectedItemChanged event handler. Every time the selected item is changed by the user, this code is executed. In the above example program, we set the Text property of the Form to the current item in the DomainUpDown.Property
Summary. The DomainUpDown control provides an alternative to radio buttons or other pull-down lists. It is a very simple user interface control but can be useful in a variety of program contexts, including preferences dialogs (Options).
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