running another project from one project buy a click of a button

running another project from one project buy a click of a button....
looking and trying so far not successful...any help would be greatly appreciated jmg
On a second form I created a button  and want to click the button to run the second prpject...

Below is the second form.


namespace ScreenShotApp
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void backtoform1_Click(object sender, EventArgs e)
        {
            Form1 form1 = new Form1();



            form1.Show();
            this.Hide();
        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void button3_Click(object sender, EventArgs e)
        {
            // This is the button to click to run the other project can't seem to get any answers....Thank You.

           
           
        }
    }
}