Show Or Hide Text Or Vector Or Image Layers In PDF - VB.NET
PDF Renderer SDK sample in VB.NET demonstrating ‘Show Or Hide Text Or Vector Or Image Layers In PDF’
Program.vb
Imports Bytescout.PDFRenderer
Class Program
Friend Shared Sub Main(args As String())
' Create an instance of Bytescout.PDFRenderer.RasterRenderer object and register it.
Dim renderer As New RasterRenderer()
renderer.RegistrationName = "demo"
renderer.RegistrationKey = "demo"
Dim renderingOptions As New RenderingOptions()
' Enable text objects rendering
renderingOptions.RenderTextObjects = True
' DISABLE vector objects rendering
renderingOptions.RenderVectorObjects = False
' DISABLE image objects rendering
renderingOptions.RenderImageObjects = False
' Load PDF document.
renderer.LoadDocumentFromFile("multipage.pdf")
For i As Integer = 0 To renderer.GetPageCount() - 1
' Render document page to PNG image file
renderer.Save("image" & i & ".png", RasterImageFormat.PNG, i, 300, renderingOptions)
Next
' Cleanup
renderer.Dispose()
' Open the first output file in default image viewer.
System.Diagnostics.Process.Start("image0.png")
End Sub
End Class