c# - Work with textBox(s) and writing in to a File and read it back from File -

Can anyone tell me how;

Thank you.

ps: I want to type something in the text box (Winförf) and when I save the click button to all the text boxes in all the files

Daniel

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It is very vague, but string txt = file. Read All Lessons (Path); and file. Write all text (path, txt); should handle file portion (for medium sized files).