private void submitBtn_Click(object sender, EventArgs e) { // string constStr= ConfigurationManager.ConnectionStrings["connectionstr"].ToString(); if (categorynameTxt.Text == "" || categorynDescTxt.Text == "") { MessageBox.Show("pls enter all the values", "error", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { CategoryDAO categoryDAORef = new CategoryDAOImpl(); Category categoryRef = new Category(); categoryRef.categoryName = categorynameTxt.Text; categoryRef.categoryDesc = categorynDescTxt.Text; categoryDAORef.insertCatelog(categoryRef); clearFields(); } }