c# - 单击超链接会导致更新面板执行完整回发吗？

Question

当我只是尝试进行部分回发时，更新面板会进行完整回发。我只想在单击上一页和下一页的超链接时能够更新中继器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，它们评估为将执行 GET 而不是 POST 的常规链接。

由于您似乎想要看起来像链接的东西，但执行回发而不是 GET，因此您需要的是 LinkBut​​ton。它看起来像一个链接，但作用就像一个按钮并执行回发。