从寻呼机号码的代码隐藏在每个标签中添加事件处理程序

Question

我的页面结构是这样的：

<div style="BORDER-BOTTOM: black 1px solid; BORDER-LEFT: black 1px solid; OVERFLOW-Y: auto; WIDTH: 100%; ; HEIGHT: expression(document.body.clientHeight-270); BORDER-TOP: black 1px solid; BORDER-RIGHT: black 1px solid"id="divGrid">
<asp:datalist id="dlResults" runat="server" Width="100%" CellSpacing="0" CellPadding="0" RepeatDirection="Vertical">
...
</asp:datalist>
</div>
<table class="bodytext8pt" border="0" width="100%">
    <tr>
        <td><asp:panel id="pnlPager" Runat="server" CssClass="GridFooter"></asp:panel></td>
    </tr>
</table>

在代码隐藏的分页器中是由 BuildPager 函数构建的：

    private void BuildPager(DataTable dt)
    {
        pnlPager.Controls.Clear();
        Label l = new Label();
        l.Text = " (" + pgResults.PageCount.ToString("#,##0") + " pages, " + dt.Rows.Count.ToString("#,##0") + " records ) ";
        pnlPager.Controls.Add(l);
        for (int i = 0; i < pnlPager.Controls.Count; i++)
        {
            if (pnlPager.Controls[i].ToString() == "System.Web.UI.WebControls.DataGridLinkButton")
            {
                try
                {
                    LinkButton c = (LinkButton) pnlPager.Controls[i];
                    c.CssClass = "GridFooter";
                }
                catch (Exception ex) { }
            }
        }
        pnlPager.Attributes.Add("class", "GridFooter");
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(0, l);
        LinkButton lb = null;
        lb = new LinkButton();
        lb.Text = "Previous";
        lb.Attributes.Add("OnClick", "goPage(" + Convert.ToString(Convert.ToInt32(pgResults.CurrentPageIndex) - 1) + ");");
        lb.CommandArgument = Convert.ToString(Convert.ToInt32(pgResults.CurrentPageIndex) - 1);
        if (pgResults.CurrentPageIndex == 0)
        {
            lb.Enabled = false;
            lb.Style.Add("cursor", "default");
        }
        else
        {
            lb.Attributes.Add("class", "GridFooter");
        }
        **lb.Click += new EventHandler(Pager_Click);
        pnlPager.Controls.AddAt(0, lb);**
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(0, l);
        lb = new LinkButton();
        lb.Text = "First";
        lb.Attributes.Add("OnClick", "goPage(0);");
        lb.CommandArgument = Convert.ToString(0);
        if (pgResults.CurrentPageIndex == 0)
        {
            lb.Enabled = false;
            lb.Style.Add("cursor", "default");
        }
        else
        {
            lb.Attributes.Add("class", "GridFooter");
        }
        **lb.Click += new EventHandler(Pager_Click);
        pnlPager.Controls.AddAt(0, lb);**
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(0, l);
        //Build the numeric links..
        for(int i=0; i< pgResults.PageCount; i++)
        {
            l = new Label();
            l.Width = Unit.Pixel(5);
            pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, l);
            lb = new LinkButton();
            lb.Text = Convert.ToString(i+1);
            lb.Attributes.Add("OnClick", "goPage(" + Convert.ToString(i) + ");");
            lb.CommandArgument = Convert.ToString(i);
            if (pgResults.CurrentPageIndex == i)
            {
                lb.Enabled = false;
                lb.Style.Add("cursor", "default");
            }
            else
            {
                lb.Attributes.Add("class", "GridFooter");
                **lb.Click += new EventHandler(Pager_Click);**
            }
            pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, lb);
        }
        //End of numeric links
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, l);
        lb = new LinkButton();
        lb.Text = "Next";
        lb.Attributes.Add("OnClick", "goPage(" + Convert.ToString(Convert.ToInt32(pgResults.CurrentPageIndex) + 1) + ");");
        lb.CommandArgument = Convert.ToString(Convert.ToInt32(pgResults.CurrentPageIndex) + 1);
        if (pgResults.CurrentPageIndex == pgResults.PageCount - 1)
        {
            lb.Enabled = false;
            lb.Style.Add("cursor", "default");
        }
        else
        {
            lb.Attributes.Add("class", "GridFooter");
        }
        **lb.Click += new EventHandler(Pager_Click);**
        pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, lb);
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, l);
        lb = new LinkButton();
        lb.Text = "Last";
        lb.Attributes.Add("OnClick", "goPage(" + Convert.ToString(Convert.ToInt32(pgResults.PageCount) - 1) + ");");
        lb.CommandArgument = Convert.ToString(Convert.ToInt32(pgResults.PageCount) - 1);
        if (pgResults.CurrentPageIndex == pgResults.PageCount - 1)
        {
            lb.Enabled = false;
            lb.Style.Add("cursor", "default");
        }
        else
        {
            lb.Attributes.Add("class", "GridFooter");
        }
        **lb.Click += new EventHandler(Pager_Click);**
        pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, lb);
        l = new Label();
        l.Width = Unit.Pixel(5);
        pnlPager.Controls.AddAt(pnlPager.Controls.Count - 1, l);

    }

数字标签随点击事件一起添加：

private void Pager_Click(object sender, EventArgs e)
        {           
            LinkButton lb = (LinkButton) sender;
            pgResults.CurrentPageIndex = Convert.ToInt32(lb.CommandArgument);
            BindList(false);
        }

但是当我单击这些数字或"下一个"，"上一个"时，此pager_click不会触发。我是否以正确的方式添加了事件处理程序。请建议

谢谢

Answer 1

找到了安慰。动态创建的控件在页面加载时丢失，因此，我们需要在回发中再次加载它们。