 In this video, we will search in highlights in PDF using C-Sharp. To begin, let's copy the sample code and paste it into the Visual Studio Editor. I added the sample code link in the description box below. To search in highlights in PDF, we will use the ByteScout PDF SDK. You can add a reference to the PDF SDK DLL in the Solution Explorer. Right-click on Reference and select Add Reference. Look at the ByteScout PDF SDK and add. After that, copy the sample file in your folder. Then add the sample file in the Solution Explorer and make sure to set the output directory into Copy Always. We will put the sample file in the input file and type 0 for page index. For the search pattern we will type backslashd plus backslash dot backslashd plus. For the regex search type true. Then, load the input file in the load document from file property. Now, add your registration name and registration key in their corresponding properties accordingly. You can get your license details in the ByteScout dashboard. Then, type your output PDF file name. After setting up, you may now execute the program. You will see the result in your program folder. Here's the sample PDF and here's the output. For more tutorials, you may visit our YouTube channel and don't forget to hit the Subscribe button. Thank you for watching.