protected void Button1_Click(object sender, EventArgs e) { msg.Text = "your choice is:"; if (l1.Items[i].Selected) { msg.Text += temp + l1.Items[i].Text; temp = ","; } }
for (int i = 0; i < l1.Items.Count; i++)
程序的功能是什么？(msg为标签控件的ID, l1为列表框控件的ID)
