Programmatically display .MHT files inline

Question

Hi. I have a PDF file and a MHT file. Following is the code I'm using to read the file and display it INLINE in the browser. PageData is a MemoryStream object that contains the file's actual stream of bytes. ---------------------------- PDF files ---------------------------- Response.ContentType = "application/pdf"; Response.AddHeader("Content-Type", "application/pdf"); Response.AddHeader("content-disposition", "inline;filename=file.pdf"); PageData.WriteTo(Response.OutputStream); ---------------------------- MHT files ---------------------------- Response.ContentType = "message/rfc822"; Response.AddHeader("Content-Type", "message/rfc822"); Response.AddHeader("content-disposition", "inline;filename=file.mht"); PageData.WriteTo(Response.OutputStream); Using the above code, I can successfully view the PDF files, but NOT MHT files. For MHT files, Blank IE window appears and the "View Source" displays the following HTML. ---- ---- Please note that I can view both PDF and MHT files successfully as attachments, as opposed to being inline. i.e., Response.AddHeader("content-disposition", "attachment;filename=file.mht"); works absolutely fine. I'm wondering if MHT files can be viewed inline at all. If yes, please let me know where I'm doing it wrong. Thanks in advance. -Srivalli.