//----- End of the codes.
        #region Method
        //-----
        #region ShowAlert
        /// <summary>
        /// A function that displays a notification with three message inputs, caption, and photos.
        /// </summary>
        /// <param name="message"></param>
        /// <param name="caption"></param>
        /// <param name="picture"></param>
        public void ShowAlert(string message, Caption caption, string picture)
        {
            this.Opacity       = 0.0;
            this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;

            string name;

            for (int i = 1; i < 10; i++)
            {
                name = "alert" + i.ToString();

                PopupNotificationForm popupNotification = (PopupNotificationForm)System.Windows.Forms.Application.OpenForms[name];

                if (popupNotification == null)
                {
                    this.Name     = name;
                    this.x        = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width - this.Width + 15;
                    this.y        = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height - this.Height * i - 5 * i;
                    this.Location = new System.Drawing.Point(this.x, this.y);
                    break;
                }
            }

            this.x = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width - base.Width - 5;

            switch (caption)
            {
            case Caption.موفقیت:
                alertIconPicturBox.Image = Resturant.Properties.Resources.succes_512;
                BackColor         = System.Drawing.Color.SeaGreen;
                captionLabel.Text = Caption.موفقیت.ToString();
                break;

            case Caption.اخطار:
                alertIconPicturBox.Image = Resturant.Properties.Resources.warning_512;
                BackColor         = System.Drawing.Color.DarkOrange;
                captionLabel.Text = Caption.اخطار.ToString();
                break;

            case Caption.خطا:
                alertIconPicturBox.Image = Resturant.Properties.Resources.error_512;
                BackColor         = System.Drawing.Color.DarkRed;
                captionLabel.Text = Caption.خطا.ToString();
                break;

            case Caption.اطلاع:
                alertIconPicturBox.Image = Resturant.Properties.Resources.info_512;
                BackColor         = System.Drawing.Color.RoyalBlue;
                captionLabel.Text = Caption.اطلاع.ToString();
                break;
            }

            this.objectpicturBox.Image  = System.Drawing.Image.FromFile(picture);
            this.alertMessageLabel.Text = message;

            this.Show();
            this.action          = Action.start;
            this.timer1.Interval = 1;
            this.timer1.Start();
        }
        private void Timer1_Tick(object sender, System.EventArgs e)
        {
            switch (this.action)
            {
            case Action.wait:
                timer1.Interval = 5000;
                action          = Action.close;
                break;

            case Action.start:
                timer1.Interval = 1;
                Opacity        += 0.1;
                if (x < Location.X)
                {
                    Left--;
                }
                else
                {
                    if (Opacity == 1.0)
                    {
                        action = Action.wait;
                    }
                }
                break;

            case Action.close:
                timer1.Interval = 1;
                Opacity        -= 0.1;
                Left           -= 3;

                if (Opacity == 0.0)
                {
                    base.Close();
                }
                break;
            }
        }
 //-----Biginning of the codes.
 #region CancelButton_Click
 private void CancelButton_Click(object sender, System.EventArgs e)
 {
     timer1.Interval = 1;
     this.action     = Action.close;
 }