ASP.NET & PowerPoint - Open Template Modify/Edit Slides

Imports Microsoft.Office.Interop.PowerPoint
Public Class AspNetPowerPointOpenPPT
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Const wdColorLightGreen = &HCCFFCC
        Const wdColorBlue = &HCCFFCC

        Dim ppApp As New Microsoft.Office.Interop.PowerPoint.Application
        Dim ppPres As Presentation
        Dim ppSlide1, ppSlide2, ppSlide3, ppSlide4 As Slide
        Dim ppName As String = "MyPP/MyPPt.ppt"
        Dim ppDoc As String = "thaicreate.ppt"

        ppApp.Visible = True

        ppPres = ppApp.Presentations.Open(Server.MapPath(ppDoc))

        ppSlide1 = ppPres.Slides(1)
        '*** AddTextbox, objControl.Left,objControl.Top,objControl.Width,objControl.Height ***'
        ppSlide1.Shapes.AddTextbox(1, 50, 100, 700, 100) '***4
        ppSlide1.Shapes(1).TextFrame.TextRange.Text = "I Love ThaiCreate.Com 1"
        ppSlide1.Shapes(1).TextFrame.TextRange.Font.Name = "Arial"
        ppSlide1.Shapes(1).TextFrame.TextRange.Font.Size = 10
        ppSlide1.Shapes(1).TextFrame.TextRange.Font.Color.RGB = wdColorLightGreen

        ppSlide1.Shapes.AddTextbox(1, 50, 150, 700, 100)
        ppSlide1.Shapes(2).TextFrame.TextRange.Text = "I Love ThaiCreate.Com 2"
        ppSlide1.Shapes(2).TextFrame.TextRange.Font.Name = "Arial"
        ppSlide1.Shapes(2).TextFrame.TextRange.Font.Size = 20

        ppSlide1.Shapes.AddTextbox(1, 50, 200, 700, 100)
        ppSlide1.Shapes(3).TextFrame.TextRange.Text = "I Love ThaiCreate.Com 3"
        ppSlide1.Shapes(3).TextFrame.TextRange.Font.Name = "Arial"
        ppSlide1.Shapes(3).TextFrame.TextRange.Font.Size = 30

        ppSlide1.Shapes.AddTextbox(1, 50, 250, 700, 100)
        ppSlide1.Shapes(4).TextFrame.TextRange.Text = "I Love ThaiCreate.Com 4"
        ppSlide1.Shapes(4).TextFrame.TextRange.Font.Name = "Arial"
        ppSlide1.Shapes(4).TextFrame.TextRange.Font.Size = 40

        ppSlide1.Shapes.AddTextbox(1, 50, 300, 700, 100)
        ppSlide1.Shapes(5).TextFrame.TextRange.Text = "I Love ThaiCreate.Com 5"
        ppSlide1.Shapes(5).TextFrame.TextRange.Font.Name = "Arial"
        ppSlide1.Shapes(5).TextFrame.TextRange.Font.Size = 50
        ppSlide1.Shapes(5).TextFrame.TextRange.Font.Color.RGB = wdColorBlue
        ppSlide1.Shapes.AddPicture(Server.MapPath("thaicreate-2009.gif"), 0, 1, 310, 380, 100, 100) '*** Picture,Left,Top,Width,Height ***'


        ppSlide2 = ppPres.Slides.Add(2, 3)
        ppSlide2.Shapes(1).TextFrame.TextRange.Text = "www.ThaiCreate.Com Version"
        ppSlide2.Shapes(1).TextFrame.TextRange.Font.Color.RGB = wdColorBlue
        ppSlide2.Shapes(2).TextFrame.TextRange.Text = "Version 2008" & vbCr & _
        "Version 2008" & vbCr & "Version 2008" & vbCr & "Version 2008"
        ppSlide2.Shapes(3).TextFrame.TextRange.Text = "Version 2009" & vbCr & _
        "Version 2009" & vbCr & "Version 2009" & vbCr & "Version 2009"

        ppSlide3 = ppPres.Slides.Add(3, 4)
        ppSlide3.Shapes(1).TextFrame.TextRange.Text = "We Love ThaiCreate.Com"
        ppSlide3.Shapes(1).TextFrame.TextRange.Font.Color.RGB = wdColorBlue

        ppSlide4 = ppPres.Slides.Add(4, 5)
        ppSlide4.Shapes(1).TextFrame.TextRange.Text = "We Love ThaiCreate.Com"
        ppSlide4.Shapes(1).TextFrame.TextRange.Font.Color.RGB = wdColorBlue
        ppSlide4.Shapes(2).TextFrame.TextRange.Text = "2005" & vbCr & "2006" & vbCr & "2007" & vbCr & "2008" & vbCr & "2009"

        ppApp.Presentations(1).SaveAs(Server.MapPath(ppName))
        ppApp.Quit()
        ppApp = Nothing

        Me.lblText.Text = "PowerPoint Created <a href=" & ppName & ">Click here</a> to Download."

    End Sub
End Class