c# - 单击超链接会导致更新面板执行完整回发？

Question

当我只是尝试进行部分回发时，更新面板会进行完整的回发。我只想在单击超链接上一页和下一页时能够更新 Repeater 而不是更新整个页面。

   protected void Page_Load(object sender, EventArgs e)
{
    PagedDataSource objpd = new PagedDataSource();

    string connStr = ConfigurationManager.ConnectionStrings["yafnet"].ConnectionString;
    SqlConnection mySQLconnection = new SqlConnection(connStr);
    if (mySQLconnection.State == ConnectionState.Closed)
    {
        mySQLconnection.Open();
    }

    SqlCommand mySqlSelect = new SqlCommand("SELECT * FROM [Comments]", mySQLconnection);
    mySqlSelect.CommandType = CommandType.Text;
    SqlDataAdapter mySqlAdapter = new SqlDataAdapter(mySqlSelect);
    DataTable table = new DataTable();
    mySqlAdapter.Fill(table);


    objpd.DataSource = table.DefaultView;
    objpd.AllowPaging = true;
    objpd.PageSize = 1;

    int currentPage;

    if (Request.QueryString["page"] != null)
    {
        currentPage = Int32.Parse(Request.QueryString["page"]);
    }
    else
    {
        currentPage = 1;
    }

    objpd.CurrentPageIndex = currentPage - 1;
    // Label1.Text = "Page " + currentPage + " of " + pds.PageCount;

    if (!objpd.IsFirstPage)
    {
        linkPrev.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (currentPage - 1);



    }

    if (!objpd.IsLastPage)
    {
        linkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" + (currentPage + 1);



    }

    Repeater1.DataSource = objpd;
    Repeater1.DataBind();

}

这是我的HTML

<div class="comment">

    <asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">

        <ContentTemplate>
            <asp:Repeater ID="Repeater1" runat="server">

                <HeaderTemplate>
                    <table class="commentsx" cellspacing="0">
                </HeaderTemplate>

                <ItemTemplate>

                    <tr>
                        <td class="name">
                            <div class="right">
                                <%# Eval("CommentUserName") %>
                            </div>
                            <div class="left">
                                <%# Eval("CommentDateTime") %>
                            </div>
                        </td>


                    </tr>
                    <tr>
                        <td>
                            <div class="mess">
                                <%# Eval("CommentMessage") %>
                            </div>
                        </td>
                    </tr>


                </ItemTemplate>


                <FooterTemplate>
                    </table>
                </FooterTemplate>


            </asp:Repeater>

            <asp:HyperLink ID="linkPrev" runat="server">Previous Page</asp:HyperLink>
            <asp:HyperLink ID="linkNext" runat="server">Next Page</asp:HyperLink>
        </ContentTemplate>



        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Button1" EventName="DataBinding" />
        </Triggers>



    </asp:UpdatePanel>

</div>

Answer 1

Hyperlink 控件根本不执行回发，它们评估将执行 GET 而不是 POST 的常规链接。

既然您想要的东西看起来像一个链接，但执行回发而不是 GET，您需要的是 LinkBut​​ton。它看起来像一个链接，但实际上像一个按钮并执行回发。