Bulk Search & Replace Text File Content - Python C# !!!

I have folders and subfolders, in there contain thousands of text files. I want a way to search and replace certain words within the text file to something else, and do it bulk. Search Box: Tabble Replace Box: Table Search Box: Lehshie Replace Box: * 20 boxes to start, I can add more search box so it'll do multiple operations at once. * Ignore I have text files I don't want it to edit. Maybe we can have an input box and in there will have file names with or [login to view URL] I wish it to not go in and replace anything. e.g. Inside [login to view URL]: [login to view URL] Titles - LA Party [login to view URL] Titles - LA Party [login to view URL] Titles - Los Angeles Party [login to view URL] Software will ignore these files and not search and replace content in those 4 listed files. * Extension Box: I can type txt. I can type txt, cfg I can put txt, cfg, html (it will look through all 3 of these) * Auto Save / Auto Load Feature, to save settings from last successful run into save.cfg. When I start program again, it will auto load. * Someone made a software similar to what I want, they don't have a way to ignore files. Take a look. [login to view URL] * I'm open for new ideas to make my software better, tell me about your ideas when applying or after talking to me. * Payment after software is working and bug free * I will need source code upon payment * Please type "I've read everything" when applying or get IGNORED.