DockStyle.Fill
using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; public class AnchorForm : System.Windows.Forms.Form { private System.Windows.Forms.Button button1; public AnchorForm() { InitializeComponent(); CenterToScreen(); } private void InitializeComponent() { this.button1 = new System.Windows.Forms.Button(); this.Controls.AddRange(new System.Windows.Forms.Control[] {this.button1}); this.Text = "Anchoring (and Docking) Controls"; // dock Fill button1.Dock = DockStyle.Fill; button1.Text = "Anchor: " + button1.Anchor.ToString() + "\nDock: " + button1.Dock.ToString(); } static void Main() { Application.Run(new AnchorForm()); } }