private void button1_Click(object sender, EventArgs e)
{
richTextBox1.Text = "等待中...";
if (comboBox1.Text == "")
{
return;
}
String result = connector.GetStringWithUrl(baseUrl, "api_lottery.php?action=startLottery&group_name=" + comboBox1.SelectedItem.ToString());
richTextBox1.Text = result;
Form1_Load(sender, e);
}