PdfViewerController.vb

Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.Mvc
Imports DevExpress.Web.Mvc
Imports E5101.Models
Imports DevExpress.Pdf
Imports System.IO

Namespace E5101.Controllers
	Public Class PdfViewerController
		Inherits Controller
		Public Const SESSION_KEY As String = "PdfFile"

		Public Function PreviewByFileName(ByVal pdfFileName As String) As ActionResult
            Session(SESSION_KEY) = System.IO.File.ReadAllBytes(Server.MapPath(pdfFileName))
			Return PartialView("_PdfViewerPartial")
		End Function

		Public Function Preview() As ActionResult
			Return PartialView("_PdfViewerPartial")
		End Function

		Public Function DocumentViewPartial() As ActionResult
			Dim documentProcessor As New PdfDocumentProcessor()

            Dim stream As New MemoryStream(CType(Session(SESSION_KEY), Byte()))
            documentProcessor.LoadDocument(stream)

            Dim model As New List(Of PdfPageModel)()
            For pageNumber As Integer = 1 To documentProcessor.Document.Pages.Count
                model.Add(New PdfPageModel(documentProcessor) With {.PageNumber = pageNumber})
            Next pageNumber
            Return PartialView("_DocumentViewPartial", model)
		End Function
	End Class
End Namespace