Want to save time? You will save a lot of time on writing and testing code as you may just take the VB.NET code from ByteScout PDF Suite for show or hide text or vector or image layers in pdf with pdf renderer sdk below and use it in your application. Just copy and paste the code into your VB.NET application’s code and follow the instructions. Complete and detailed tutorials and documentation are available along with installed ByteScout PDF Suite if you’d like to learn more about the topic and the details of the API.
The trial version of ByteScout PDF Suite can be downloaded for free from our website. It also includes source code samples for VB.NET and other programming languages.
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