private void guna2Button4_Click(object sender, EventArgs e)
 {
     try
     {
         if (nic.Text.Trim() != string.Empty && test.Text.Trim() != string.Empty)
         {
             using (OpenFileDialog dig = new OpenFileDialog {
                 Filter = "PDF Documents(*.pdf) | *.pdf", ValidateNames = true
             })
             {
                 if (dig.ShowDialog() == DialogResult.OK)
                 {
                     DialogResult dialog = MessageBox.Show("Are you sure want to upload?", "File Upload", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                     if (dialog == DialogResult.Yes)
                     {
                         string       finishedDate = DateTime.Today.ToString();
                         string       filename     = dig.FileName;
                         DBconnection ob           = new DBconnection();
                         ob.uploadReport(filename, reportNumber, patientNic, finishedDate);
                     }
                 }
             }
             clear();
             displayAvailableReports();
         }
         else
         {
             MessageBox.Show("Empty Fields!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show("Error upload file:\n" + ex, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
         Console.WriteLine("upload: \n" + ex);
     }
     displayAvailableReports();
 }