Generic Memento Pattern for Undo-Redo in C#

namespace UndoRedoBySeralizationDemo
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.editToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.undoToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.redoToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.shapeToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.ellipseToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.triangleToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.rectangleToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.colorToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.redToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.blueToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.greenToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.menuStrip1.SuspendLayout();
            this.SuspendLayout();
            // 
            // menuStrip1
            // 
            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.editToolStripMenuItem,
            this.shapeToolStripMenuItem,
            this.colorToolStripMenuItem});
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(510, 24);
            this.menuStrip1.TabIndex = 0;
            this.menuStrip1.Text = "menuStrip1";
            // 
            // editToolStripMenuItem
            // 
            this.editToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.undoToolStripMenuItem,
            this.redoToolStripMenuItem});
            this.editToolStripMenuItem.Name = "editToolStripMenuItem";
            this.editToolStripMenuItem.Size = new System.Drawing.Size(37, 20);
            this.editToolStripMenuItem.Text = "Edit";
            this.editToolStripMenuItem.DropDownOpened += new System.EventHandler(this.editToolStripMenuItem_DropDownOpened);
            // 
            // undoToolStripMenuItem
            // 
            this.undoToolStripMenuItem.Name = "undoToolStripMenuItem";
            this.undoToolStripMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.Z)));
            this.undoToolStripMenuItem.Size = new System.Drawing.Size(137, 22);
            this.undoToolStripMenuItem.Text = "Undo";
            this.undoToolStripMenuItem.Click += new System.EventHandler(this.undoToolStripMenuItem_Click);
            // 
            // redoToolStripMenuItem
            // 
            this.redoToolStripMenuItem.Name = "redoToolStripMenuItem";
            this.redoToolStripMenuItem.ShortcutKeys = ((System.Windows.Forms.Keys)((System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.Y)));
            this.redoToolStripMenuItem.Size = new System.Drawing.Size(137, 22);
            this.redoToolStripMenuItem.Text = "Redo";
            this.redoToolStripMenuItem.Click += new System.EventHandler(this.redoToolStripMenuItem_Click);
            // 
            // shapeToolStripMenuItem
            // 
            this.shapeToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.ellipseToolStripMenuItem,
            this.triangleToolStripMenuItem,
            this.rectangleToolStripMenuItem});
            this.shapeToolStripMenuItem.Name = "shapeToolStripMenuItem";
            this.shapeToolStripMenuItem.Size = new System.Drawing.Size(49, 20);
            this.shapeToolStripMenuItem.Text = "Shape";
            // 
            // ellipseToolStripMenuItem
            // 
            this.ellipseToolStripMenuItem.Checked = true;
            this.ellipseToolStripMenuItem.CheckState = System.Windows.Forms.CheckState.Checked;
            this.ellipseToolStripMenuItem.Name = "ellipseToolStripMenuItem";
            this.ellipseToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.ellipseToolStripMenuItem.Text = "Ellipse";
            this.ellipseToolStripMenuItem.Click += new System.EventHandler(this.Shapes_Click);
            // 
            // triangleToolStripMenuItem
            // 
            this.triangleToolStripMenuItem.Name = "triangleToolStripMenuItem";
            this.triangleToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.triangleToolStripMenuItem.Text = "Triangle";
            this.triangleToolStripMenuItem.Click += new System.EventHandler(this.Shapes_Click);
            // 
            // rectangleToolStripMenuItem
            // 
            this.rectangleToolStripMenuItem.Name = "rectangleToolStripMenuItem";
            this.rectangleToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.rectangleToolStripMenuItem.Text = "Rectangle";
            this.rectangleToolStripMenuItem.Click += new System.EventHandler(this.Shapes_Click);
            // 
            // colorToolStripMenuItem
            // 
            this.colorToolStripMenuItem.Checked = true;
            this.colorToolStripMenuItem.CheckState = System.Windows.Forms.CheckState.Checked;
            this.colorToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.redToolStripMenuItem,
            this.blueToolStripMenuItem,
            this.greenToolStripMenuItem});
            this.colorToolStripMenuItem.Name = "colorToolStripMenuItem";
            this.colorToolStripMenuItem.Size = new System.Drawing.Size(44, 20);
            this.colorToolStripMenuItem.Text = "Color";
            // 
            // redToolStripMenuItem
            // 
            this.redToolStripMenuItem.Checked = true;
            this.redToolStripMenuItem.CheckState = System.Windows.Forms.CheckState.Checked;
            this.redToolStripMenuItem.Name = "redToolStripMenuItem";
            this.redToolStripMenuItem.Size = new System.Drawing.Size(103, 22);
            this.redToolStripMenuItem.Tag = "Red";
            this.redToolStripMenuItem.Text = "Red";
            this.redToolStripMenuItem.Click += new System.EventHandler(this.Colors_Click);
            // 
            // blueToolStripMenuItem
            // 
            this.blueToolStripMenuItem.Name = "blueToolStripMenuItem";
            this.blueToolStripMenuItem.Size = new System.Drawing.Size(103, 22);
            this.blueToolStripMenuItem.Tag = "Blue";
            this.blueToolStripMenuItem.Text = "Blue";
            this.blueToolStripMenuItem.Click += new System.EventHandler(this.Colors_Click);
            // 
            // greenToolStripMenuItem
            // 
            this.greenToolStripMenuItem.Name = "greenToolStripMenuItem";
            this.greenToolStripMenuItem.Size = new System.Drawing.Size(103, 22);
            this.greenToolStripMenuItem.Tag = "Green";
            this.greenToolStripMenuItem.Text = "Green";
            this.greenToolStripMenuItem.Click += new System.EventHandler(this.Colors_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.BackColor = System.Drawing.Color.White;
            this.ClientSize = new System.Drawing.Size(510, 346);
            this.Controls.Add(this.menuStrip1);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "Form1";
            this.Text = "Drag pressing left button  to draw, and right button to reomve";
            this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
            this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
            this.MouseDown += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseDown);
            this.menuStrip1.ResumeLayout(false);
            this.menuStrip1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.MenuStrip menuStrip1;
        private System.Windows.Forms.ToolStripMenuItem shapeToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem ellipseToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem triangleToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem rectangleToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem colorToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem redToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem blueToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem greenToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem editToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem undoToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem redoToolStripMenuItem;
    }
}