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int AB = 0;


        private void Form1_MouseClick(object sender, MouseEventArgs e)
        {
            Random rand = new Random();
            int g2 = rand.Next(450);
            int g3 = rand.Next(240);
            int r1 = rand.Next(90);
            Button b1 = new Button();
            TextBox b2 = new TextBox();
            b1.Name = "b12";
            b2.Name = "b22";
            if (e.Button == MouseButtons.Left && AB%2 != 0)
            {
                b1.Location = new Point(e.X, e.Y);
                b1.Text = string.Format("{0},{1}", e.X, e.Y);
                b1.Parent = this;
                AB++;
            }

            else if (e.Button == MouseButtons.Left && AB % 2 == 0)
            {
                b2.Location = new Point(e.X, e.Y);
                b2.Text = string.Format("{0},{1}", e.X, e.Y);
                b2.Parent = this;
                AB++;
            }
            else if (e.Button == MouseButtons.Right)
            {
                this.Controls.Remove(b1);
                this.Controls.Remove(b2);
                this.Refresh();
            }
        }