private void bunifuThinButton21_Click(object sender, EventArgs e) { DateTime reqdate = dateTimePicker1.Value.Date; if (reqdate < DateTime.Today) { MessageBox.Show("Select Valid Date and Time"); } if (textBox1.Text.Length == 0) { MessageBox.Show("Enter The Purpose"); } else { string result = emp.AppRequest(this.E_Id, textBox1.Text, reqdate); MessageBox.Show(result); bunifuThinButton21.Enabled = false; } }