Open MS Word document using ASP.NET

Try
            Dim stream As FileStream = File.Open("d:\word.doc", FileMode.Open) 'replace the location with your word doc.

            stream.Position = 0

            ' Now read s into a byte buffer.
            Dim bytes() As Byte = New Byte(stream.Length) {}
            Dim numBytesToRead As Integer = CType(stream.Length, Integer)
            Dim numBytesRead As Integer = 0
            While numBytesToRead > 0
                ' Read may return anything from 0 to numBytesToRead.
                Dim n As Integer = stream.Read(bytes, numBytesRead, numBytesToRead)
                ' The end of the file is reached.
                If n = 0 Then
                    Exit While
                End If
                numBytesRead += n
                numBytesToRead -= n
            End While
            stream.Close()

            Response.Clear()
            Response.ContentType = "application/word"
            Response.AddHeader("Content-disposition", "filename=output.doc")

            Response.OutputStream.Write(bytes, 0, bytes.Length)
            Response.OutputStream.Flush()
            Response.OutputStream.Close()
            Response.Flush()
            Response.Close()
        Catch ex As Exception
            Throw ex
        End Try