Create a .txt file if doesn't exist, and if it does append a new line

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青春惊慌失措
青春惊慌失措 2020-11-28 19:53

I would like to create a .txt file and write to it, and if the file already exists I just want to append some more lines:

string path = @\"E:\\AppServ\\Examp         


        
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  •  情歌与酒
    2020-11-28 20:50

    When you start StreamWriter it's override the text was there before. You can use append property like so:

    TextWriter t = new StreamWriter(path, true);
    

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