html控件select的传值问题
为什么aaa会读不到值?
string aaa;
aaa=pres1.Attributes["value"];
public void Take_S1(Object sender, EventArgs e)
{
pres1.Attributes.Add("value", s1.SelectedIndex.ToString());
}
<select id="s1" class="Places" runat="server" onchange="Take_S1"><option>省份</option></select>