private void button_add_Click(object sender, EventArgs e) { try { ArrayList dataInfo = new ArrayList(); if (String.IsNullOrEmpty(textBox_eid.Text) || String.IsNullOrEmpty(textBox_name.Text) || String.IsNullOrEmpty(comboBox_jobtitle.Text) || String.IsNullOrEmpty(textBox_salary.Text) || String.IsNullOrEmpty(textBox_month.Text) || String.IsNullOrEmpty(dateTimePicker1.Text) || String.IsNullOrEmpty(textBox_status.Text)) { MessageBox.Show("Fill up all data"); } else { dataInfo.Add(textBox_eid.Text); dataInfo.Add(textBox_name.Text); dataInfo.Add(comboBox_jobtitle.Text); dataInfo.Add(textBox_salary.Text); dataInfo.Add(textBox_month.Text); dataInfo.Add(dateTimePicker1.Text); dataInfo.Add(textBox_status.Text); DatabaseHelperClass ob = new DatabaseHelperClass(dataInfo); if (ob.addNewSalary()) { MessageBox.Show("Salary Added"); } else { MessageBox.Show("Error Adding Salary"); } } } catch (Exception exp) { MessageBox.Show("Exception"); } }