asp.net ajax, ASPxCallBackѧϰ

----------------------ModalPopupExtender
D:\sourceforge\asp.net\AjaxControlToolkit_net20\SampleWebSite\ModalPopup\ModalPopup.aspx
// linkbutton1Ôö¼ÓÀ©Õ¹ModalPopupExtenderÊôÐÔ:
<asp:LinkButton ID="LinkButton1" runat="server" Text="Click here to change the paragraph style" />
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender" runat="server"
            TargetControlID="LinkButton1"
            PopupControlID="Panel1"
            BackgroundCssClass="modalBackground"
            OkControlID="OkButton"
            OnOkScript="onOk()"
            CancelControlID="CancelButton"
            DropShadow="true"
            PopupDragHandleControlID="Panel3" />
CancelControlID: È¡Ïû°´Å¥,CancelButton
OkControlID: È·¶¨°´Å¥,OkButton
OnOkScript:µ±µã»÷È·¶¨Ö´ÐеĽű¾,onOk()
PopupDragHandleControlID:Í϶¯µ¯³ö¿òµÄ¿Ø¼þID, Panel3
TargetControlID:µ÷ÓÃÄ¿±ê¿Ø¼þ£¬LinkButton1,µã»÷Õâ¸ö¼´µ¯³öpop
// ÕâÀïÃæÓÐÒ»¸öÒþ²ØµÄ°´Å¥×÷Ϊµ÷ÓÃtarget, ·þÎñÆ÷:this.programmaticModalPopup.Show();¼´ÏÔʾmodalpop
<asp:Button runat="server" ID="hiddenTargetControlForModalPopup" style="display:none"/>
 <ajaxToolkit:ModalPopupExtender runat="server" ID="programmaticModalPopup"
            BehaviorID="programmaticModalPopupBehavior"