Most search features of grid view in ASP.NET shows how to search data from a data list that is connected to a database. But my data in my gridview is list of name of books from a folder. It uploads files from folders and save them on visual studio folder, not database. Now I want to search data from the gridview but all solutions are talking about how to search from database. Your help contributes a lot for my web app. I am almost on the last stage to launch it. Thanks.
What I have tried: