gistfile1.cs

        private void goButton_Click(object sender, EventArgs e)
        {
            if (!CheckErrors())
            {
                return;
            }

            string data = GetProjectData();

            System.IO.StreamWriter writer = new System.IO.StreamWriter("input.xml", false, Encoding.UTF8);
            writer.Write(data);
            writer.Close();

            Process.Start("Solver.exe");
           
        }