WinForms Context Menu Strip Component

using Syncfusion.Windows.Forms.Tools;
 public partial class Form1 : Form
    {
        private Syncfusion.Windows.Forms.Tools.ContextMenuStripEx contextMenuStripEx;
        private System.Windows.Forms.ToolStripMenuItem toolStripMenuItem1;
        private System.Windows.Forms.ToolStripMenuItem toolStripMenuItem2;
        private System.Windows.Forms.ToolStripMenuItem toolStripMenuItem3;
        private System.Windows.Forms.RichTextBox richTextBox1;
        public Form1()
        {
            InitializeComponent();
            //Initializing
            this.contextMenuStripEx = new Syncfusion.Windows.Forms.Tools.ContextMenuStripEx();
            this.toolStripMenuItem1 = new System.Windows.Forms.ToolStripMenuItem();
            this.toolStripMenuItem2 = new System.Windows.Forms.ToolStripMenuItem();
            this.toolStripMenuItem3 = new System.Windows.Forms.ToolStripMenuItem();
            this.richTextBox1 = new System.Windows.Forms.RichTextBox();
            //Associate the context menu
            this.toolStripMenuItem1.Text = "New";
            this.toolStripMenuItem2.Text = "Copy";
            this.toolStripMenuItem3.Text = "Cut";
            this.contextMenuStripEx.Items.AddRange(new System.Windows.Forms.ToolStripItem[] { this.toolStripMenuItem1, this.toolStripMenuItem2, this.toolStripMenuItem3, });
            this.contextMenuStripEx.ResumeLayout(false);
            this.richTextBox1.ContextMenuStrip = this.contextMenuStripEx;
            this.Controls.Add(this.richTextBox1);
        }
    }