i am doing one project in asp.net in which i have one link button .
I have one ppt file.
i have to open that ppt file in same aspx page when i click on that link button.
so anybudy can help me.
Thanks in Advance.

click here Microsoft will help you

and try this

Public Function Convert(ByVal strPath As String, ByVal strOutputPath As String) As Boolean

        Dim pptApplication As ApplicationClass
        Dim pptPresentation As Presentation


            pptApplication = New ApplicationClass()
            pptPresentation = pptApplication.Presentations.Open(strPath, MsoTriState.msoFalse, MsoTriState.msoFalse, MsoTriState.msoFalse)


            For intCount As Int32 = 1 To pptPresentation.Slides.Count
                pptPresentation.Slides.Item(intCount).Export(strOutputPath + "\" + SlideFileName + intCount.ToString + "." + Filter, Filter, Width, Height)

            Return True

        Catch ex As Exception

            Return False
            Throw ex


            pptPresentation = Nothing
            pptApplication = Nothing

        End Try

    End Function

problen done by my slow connection so please understand write code will help u