Control levels in an existing C# software

You can see in attached picture StartWindow two tags: - level of file to be created (value=6); - help letters (value=4). This means that during a session with this memorization software, sentences of a given text file will be presented with 6 words reduced to their 4 first letters in order for the user to complement them. These values change during the session according to results. 1) In the "Result" window at the end of the session (picture attached), I want the current information to be removed. Instead, there will be too lines showing level of file and help letters, as reached after the last sentence. 2) When the user will start a new session by typing the name of the file in the input file text zone of the Startwindow, displayed values will be the ones reached at the end of the previous session. This means that values must be stored, two sessions being generally separated by work with other files. (For the very first session with a text file, values will be 6 and 4 by default).