TextBox 控件自定義快捷鍵

using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private TextBox textBox1;
        public Form1()
        {
            InitializeComponent();
            textBox1 = new TextBox();
            textBox1.Dock = DockStyle.Top;
            textBox1.ShortcutsEnabled = false; // 禁用定義的快捷方式。
            textBox1.PreviewKeyDown += new PreviewKeyDownEventHandler(textBox1_PreviewKeyDown);
            this.Controls.Add(textBox1);
        }
        private void textBox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
        {
            switch (e.KeyData)
            {
                case (Keys.Control | Keys.A):
                    textBox1.SelectAll();
                    break;
                case (Keys.Control | Keys.C):
                    textBox1.Copy();
                    break;
                case (Keys.Control | Keys.X):
                    textBox1.Cut();
                    break;
                case (Keys.Control | Keys.V):
                    textBox1.Paste();
                    break;
                case (Keys.Control | Keys.Z):
                    textBox1.Undo();
                    break;
                case (Keys.Control | Keys.L):
                    textBox1.TextAlign = HorizontalAlignment.Left;
                    break;
                case (Keys.Control | Keys.E):
                    textBox1.TextAlign = HorizontalAlignment.Center;
                    break;
                case (Keys.Control | Keys.R):
                    textBox1.TextAlign = HorizontalAlignment.Right;
                    break;
            }
        }
    }
}