private void backgroundWorker2_RunWorkerCompleted_2(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Cancelled != true)
            {
                String a = e.Result.ToString();
                Studentdetailpanel.Visible = true;
                Studentdetailpanel.Show();
                student_json[] result       = JsonConvert.DeserializeObject <student_json[]>(a);
                String         name         = result[0].Name.ToString();
                String         branch       = result[0].Branch.ToString();
                String         rollno       = result[0].Roll_no.ToString();
                String         broadare     = result[0].broad_area.ToString();
                String         topic        = result[0].topic.ToString();
                String         anyotherinfo = result[0].any_other_info.ToString();
                String         guide        = result[0].Guide.ToString();
                String         password     = result[0].password.ToString();


                label24.Text = name;
                label28.Text = rollno;
                label27.Text = branch;
                label26.Text = broadare;
                label25.Text = topic;
                label23.Text = guide;
                label22.Text = anyotherinfo;
            }
        }
        private void loginToolStripMenuItem_Click(object sender, EventArgs e)
        {
            LoginPanel.Show();
            registerpanel.Show();

            Studentdetailpanel.Hide();

            //LoginPanel.Show();
        }