<cc1:DropDownExtender ID="DropDownExtender1" runat="server" DropDownControlID="Panel1"
TargetControlID="Label1">
</cc1:DropDownExtender>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
cs文件代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class test2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void lkbtn_Click(object sender, EventArgs e)
{
Label1.Text = ((LinkButton)sender).Text;
Label2.Text = Label1.Text;
}
}
先就介绍这点吧，leader过来了
