Hi,
    I'm connecting to a remote server page(Iframe 
Src="http://somepage.aspx"), which has two dropdownlists for search 
criteria, which generates a report and then downloading this report as a 
pdf file, using response.writefile.But once the file is downloaded, the 
when I change the selection in the DropDowns, it gives "Access denied" 
error.
    I'm accessing the Cache & Session objects in PageLoad and doing a 
dataview.filter in the SelectedIndexChanged Event.Does anyone have any 
idea on what could be wrong.
Thanx in Advance,
Deepa
*****************************************************************  
---------Function to download pdf file-------
Protected Function push_to_client()   
Dim file_pdf As New FileInfo(report_pdf_file)
        Response.Clear()
        Response.Buffer = True
        Response.AddHeader("Content-Disposition", "attachment; filename=" 
& file_pdf.Name)
        Response.AddHeader("Content-Length", file_pdf.Length.ToString)
        Response.ContentType = "application/octet-stream"
        Response.WriteFile(report_pdf_file)
        Response.Flush()
        Response.Close()
        Response.End()
End Function

---------ddl_selectedIndexChanged-----------
Protected Sub ddl_State_SelectedIndexChanged(ByVal sender As Object, ByVal 
e As System.EventArgs) Handles ddl_City.SelectedIndexChanged
        Session("Filter") = True
        Session("Prev_State") = ddl_State.SelectedItem.Value
        set_City()
    End Sub

Public Function set_City()

        ds_ProviderData.Tables("City_List").DefaultView.RowFilter 
= "StateId = '" & Session.Item("Selected_state") & "'"
        ddl_City.DataSource = ds_ProviderData.Tables
("City_List").DefaultView
        ddl_City.DataTextField = ds_ProviderData.Tables
("City_List").Columns.Item(1).ToString
        ddl_City.DataValueField = ds_ProviderData.Tables
("City_List").Columns.Item(1).ToString
        ddl_City.DataBind()
        ddl_City.Items.Insert(0, "Select One")
        If Session.Item("Filter") Then
            ddl_City.Items.Item(0).Selected = False
            ddl_City.Items.FindByText(Session.Item("City")).Selected = True
        Else
            ddl_City.Items.Item(0).Selected = True
        End If
    End Function
*******************************************************************