View PDF in IE, delete back back back 2 pages

A bit new to asp.net using c #. On my site, users have the ability to view the pdf file in a browser window. The pdf data is stored in a SQL database and I am using the following code:

Byte[] bytes = (Byte[])dt.Rows[0]["ContentData"];
    Response.ClearHeaders();
    Response.Clear();
    Response.AddHeader("Content-Type", "application/pdf");
    Response.AddHeader("Content-Length", bytes.Length.ToString());
    Response.AddHeader("Content-Disposition", "inline; filename=" + dt.Rows[0]    ["FileName"].ToString());
    Response.BinaryWrite(bytes);
    Response.Flush();
    HttpContext.Current.ApplicationInstance.CompleteRequest();

      

        
        
        
      

    

The problem I only ran into in Internet Explorer is when the user clicks the Back button, it moves 2 pages. This is not critical, but it annoys users. I apologize if this was asked, but I am having trouble with searches to find the problem.

Any help is appreciated. Thank.

csnewbie