private void button1_Click(object sender, EventArgs e) { int DesignationId = 0; int.TryParse(txtDesignationID.Text, out DesignationId); var designation_obj = new Designation { Id = DesignationId, Name = txtDesignationName.Text }; var designationDao = new DesignationDao(); designationDao.SaveDesignation(designation_obj); ShowDesignations(); }