No, I don't think that is possible. The Upload form is a module 'control', which is kinda like a 'view' of the main module. Without changing the source code to look for a particular querystring parameter and loading the Upload control, I don't think there's a way out of the box to do what you want.

It seems a persit HtmlInputFile value and TextEditor value problem.  The page will be reloaded after "Upload" button is clicked.  Then the "CreateInputform()" was called in Page_load.   But the original code in form.ascx.vb is just like that.  What's wrong?  Please help. 

Here is my modified page_load():

        Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
            ' Get original repository module ID
            Me.LocalResourceFile = Me.LocalResourceFile.Replace("form_Upload", "Upload")
            RepositoryModuleID = CInt(Localization.GetString("RepositoryModuleID.Text", Me.LocalResourceFile))
            oRepositoryBusinessController.SetRepositoryFolders(RepositoryModuleID)

            'Dim fname As String = oRepositoryBusinessController.LocalResourceFile
            ' Obtain PortalSettings from Current Context
            Dim objModules As New ModuleController

            ' Determine ItemId of Document to Update
            If Not (Request.Params("ItemId") Is Nothing) Then
                itemId = Int32.Parse(Request.Params("ItemId"))
            End If

            ' make sure the user got here from an upload button and not
            ' directly via pasting a URL into the browser address
            'If Request.Params.Item("HTTP_REFERER") Is Nothing Then
            '       Response.Redirect(NavigateURL("Access Denied"), True)
            'End If

            oRepositoryBusinessController.SetRepositoryFolders(RepositoryModuleID)
            ' create the input form from the form.html/form.xml templates for the current skin
            LoadformTemplate()

            If itemId <> -1 Then
                objRepository = m_RepositoryController.GetSingleRepositoryObject(itemId)
            Else
                objRepository = New DotNetNuke.Modules.Repository.RepositoryInfo
            End If

            CreateInputform()
            If Not Page.IsPostBack Then
            End If

            If Not Page.IsPostBack Then
                'v13wstat3("_returnURL") = Request.UrlReferrer.AbsoluteUri
                v13wstat3("_returnURL") = NavigateURL()
            End If

        End Sub