JQuery填充的标签未显示在Render上

Question

我正在使用jquery ...

在modpopup中填充标签

function OpenForm(dirnm, pub, cldate) {
  
            $(".lblDirectory").html(dirnm);
            $(".lblPublisher").html(pub);
            $(".lblDueDate").html(cldate);
  
  }

<b>Directory:</b>&nbsp;&nbsp;<label class="lblDirectory"></label><br />
<b>Publisher:</b>&nbsp;&nbsp;<label class="lblPublisher"></label><br />
<b>Due Date:</b>&nbsp;&nbsp;<label class="lblDueDate"></label><br />

但是在Render背后的代码上，即使它显示它已填充在屏幕上，也不会填充这些标签。

Protected Overrides Sub Render(ByVal writer As HtmlTextWriter)
    If Not (Page Is Nothing) Then
        Page.VerifyRenderingInServerForm(Me)
    End If
    If SaveFile = True Then
        Dim sw As New StringWriter(sb)
        Dim htw As New HtmlTextWriter(sw)
        MyBase.RenderChildren(htw)
        Dim html As String
        html = sb.ToString
        SignWebApproval(html)
    End If
    MyBase.Render(writer)

    ....

End Sub

我有什么遗失的吗？