C# UpdatePanel 上的 AsyncPostBackTrigger 和 PostBackTrigger 之间的区别？
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Difference between AsyncPostBackTrigger and PostBackTrigger on UpdatePanel?
提问by Christian Mark
I have a GridView(ucLAD) in my UpdatePanel(upnlListing). Inside my ucLADI have a checkbox and an action for rowClicked:
我的GridView(upnlListing) 中有一个UpdatePanel(ucLAD)。在我的内部，我ucLAD有一个复选框和一个操作rowClicked：
<asp:UpdatePanel ID="upnlListing" runat="server" >
<Triggers>
<asp:AsyncPostBackTrigger ControlID="ucLAD"/>
<%-- <asp:PostBackTrigger ControlID="ucLAD"/> --%>
</Triggers>
<ContentTemplate>
<asp:Panel ID="pnlRequest" runat="server" style="margin-top:15px; height: auto;">
<ucgv:BaseGrid runat="server" ID="ucLAD"/>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
When I use the PostBackTriggerthe action performed would be the rowClickedsame thing happen when I check the checkbox but when I use the AsyncPostBackTrigger, I can check the checkboxes but when I click the row, the action for rowClickeddon't trigger. How can I fix this?
当我使用执行PostBackTrigger的操作rowClicked时，当我选中复选框时会发生同样的事情，但是当我使用 时AsyncPostBackTrigger，我可以选中复选框，但是当我单击该行时，rowClicked不会触发该操作。我怎样才能解决这个问题？
采纳答案by ????
As describe in on of the SO question
正如在 SO 问题中所描述的
What is the difference between AsyncPostBackTrigger & PostBackTrigger?
AsyncPostBackTrigger 和 PostBackTrigger 有什么区别？
Controls inside an UpdatePanel by default cause a partial page update, controls outside cause a postback, using these triggers it is possible to change this behaviour as required.
默认情况下，UpdatePanel 内部的控件会导致部分页面更新，外部的控件会导致回发，使用这些触发器可以根据需要更改此行为。
From http://seminaarit.codezone.fi/video/devdays-2007/track1/2/2-ASP-dotNET_AJAX_Extensions.ppt
来自http://seminaarit.codezone.fi/video/devdays-2007/track1/2/2-ASP-dotNET_AJAX_Extensions.ppt
AsyncPostBackTrigger
AsyncPostBackTrigger
Converts postbacks into async callbacks Typically used to trigger updates when controls outside an UpdatePanel post back If ChildrenAsTriggers="false", can be used to specify which controls inside UpdatePanel should call back rather than post back
将回发转换为异步回调 通常用于在 UpdatePanel 之外的控件回发时触发更新 如果 ChildrenAsTriggers="false"，可用于指定 UpdatePanel 内的哪些控件应该回调而不是回发
PostBackTrigger
回传触发器
Lets controls inside UpdatePanel post back Typically used to allow certain controls to post back when ChildrenAsTriggers="true
让 UpdatePanel 内的控件回发 通常用于在 ChildrenAsTriggers="true 时允许某些控件回发
回答by priya uthaya
Theoretical explain for AsyncPostBackTrigger and PostBackTrigger above is absolutely Correct. Here I gave You example for those two:
上面对 AsyncPostBackTrigger 和 PostBackTrigger 的理论解释是完全正确的。在这里，我为您提供了这两个示例：
<td style="padding-left: 8px;">
<asp:UpdatePanel runat="server" ChildrenAsTriggers="false" UpdateMode="conditional">
<ContentTemplate>
<asp:RadioButton ID="RBtn_InventoryPriceWithPurchase" Text="Inventory Price With Purchase" GroupName="ReportAnalysis" runat="server" AutoPostBack="True" OnCheckedChanged="RBtn_InventoryPriceWithPurchase_CheckedChanged"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="RBtn_InventoryPriceWithPurchase"EventName="CheckedChanged"/>
</Triggers>
</asp:UpdatePanel>
</td>
<td style="padding-left: 8px;">
<asp:UpdatePanel runat="server" ChildrenAsTriggers="True" UpdateMode="Always">
<ContentTemplate>
<asp:RadioButton ID="RBtn_MerchandisingReport" Text="Merchandising Report" GroupName="ReportAnalysis" runat="server" AutoPostBack="True" OnCheckedChanged="RBtn_MerchandisingReport_CheckedChanged" />
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="RBtn_MerchandisingReport"/>
/Triggers>
</asp:UpdatePanel>
