private void button11_Click(object sender, EventArgs e)
{
ClassAsync c = new ClassAsync();
var s = c.MethodAsync(DateTime.Now);
MessageBox.Show(s.ToString());
}
private void button12_Click(object sender, EventArgs e)
{
string s = string.Empty;
ClassAsync c = new ClassAsync();
int i = c.Test(1);
s += i.ToString() + ",";
i = c.Test(1, true);
s += i.ToString() + ",";
i = c.Test(1, false);
s += i.ToString() + ",";
MessageBox.Show(s.ToString());
}