private void bt_Tim_Click(object sender, EventArgs e)
{
if (tb_monan.Text != "")
{
lv_dsketqua.Items.Clear();
client = new ServiceReference1.Service1Client();
client.TimmonanCompleted += new EventHandler<ServiceReference1.TimmonanCompletedEventArgs>(TimmonanCallBack);
client.TimmonanAsync(tb_monan.Text);
}
else
{
lv_dsketqua.Items.Clear();
client = new ServiceReference1.Service1Client();
client.LoadNHCFCompleted += new EventHandler<ServiceReference1.LoadNHCFCompletedEventArgs>(LoadNHCFCallBack);
client.LoadNHCFAsync();
}
}