在单击UpdatePanel内的GridView页面时，Page_Load是否正常触发？

Question

I have this code in my aspx page:

<form id="form2" runat="server">
  <asp:ScriptManager ID="ItemsScriptManager" runat="server" EnablePartialRendering="true" />
  <asp:Button runat="server" ID="SearchButton" OnClick="ItemsSearch" Text="Search" />
  <asp:UpdatePanel runat="server" ID="ItemsUpdatePanel">
    <ContentTemplate>
      <asp:ObjectDataSource runat="server" ID="ItemsDS"
        TypeName="TemplateGridViewODSPagingSorting.ItemDAO" SelectMethod="GetItems" />
      <asp:GridView runat="server" ID="ItemsGridView" DataSourceID="ItemsDS"
        AllowPaging="true" AllowSorting="true" PageSize="4">
      </asp:GridView>
    </ContentTemplate>
  </asp:UpdatePanel>
</form>

By pressing on another page of the GridView the Page_Load is triggered, is this normal behavior for a partial postback?

Answer 1

Partial rendering using UpdatePanel does not change or affect the whole Page life cycle in ASP.NET.

it's a small trick used to re-render only a certain region of the page in the browser (the UpdatePanel) but nothing else change, so yes, it's normal to see Page_Load and all other events to be triggered as usual; it has to be like that or it would not work :)

Answer 2

是的，在更新面板更新期间，每次异步回发都会调用page_load到服务器，为了克服这个问题，你可以使用jquery ajax。