private void button1_Click(object sender, EventArgs e) { if (eventIdtextBox.Text == "") { MessageBox.Show("Please give the data"); } else { DeleteService deleteService = new DeleteService(); int result = deleteService.DeleteNotes(Convert.ToInt32(eventIdtextBox.Text)); if (result > 0) { MessageBox.Show("Delete Successfully"); this.Refreash(this, null); this.Clear(this, null); } else { MessageBox.Show("Error Occur!"); } } }