private void AddGlass_Click(object sender, EventArgs e)
        {
            int quantity = int.Parse(quantityUpDown.Text);

            double cost = 0.0;

            cost = Math.Round(Convert.ToDouble(costEntry.Text), 2);

            Crud clash = new Crud();

            clash.handleClash("glasses", "glassId", "glasses", glassIdEntry);

            Glasses addGlass = new Glasses(glassIdEntry.Text, brandEntry.Text, cost, quantity, glassImageEntryBox.Text);

            addGlass.addGlasses();

            if (glassImageEntryBox.Text == "" || glassImageEntryBox.Text == "glasses.jpg")
            {
                glassImageEntryBox.Text = "glasses.jpg";
            }
            else
            {
                try
                {
                    File.Copy(Crud.fileName, Crud.destination);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("An error occured while uploading image");
                }
            }

            refreshInputs();
            glassImageEntryBox.Text = "glasses.jpg";

            Random rnd       = new Random();
            int    glassesId = rnd.Next(1, 9999);

            glassIdEntry.Text = "glasses" + glassesId.ToString();
        }
        private void button6_Click(object sender, EventArgs e)
        {
            int quantity = int.Parse(quantityUpdate.Text);

            double cost = 0.0;

            cost = Math.Round(Convert.ToDouble(costUpdate.Text), 2);

            Glasses updateGlass = new Glasses(searchUpdateKey.Text, brandUpdate.Text, cost, quantity, imageAddress.Text);

            updateGlass.updateGlasses(searchUpdateKey.Text);

            try
            {
                if (imageAddress.Text != "" && imageAddress.Text != "glasses.jpg")
                {
                    File.Copy(Crud.fileName, Crud.destination);
                }
            }
            catch (Exception ex)
            {
            }
        }