c# - Streamwriter adding characters to first line -


i doing rather simple in c#, writing list of strings text file. write sub is:

public static bool texttofile(string filename, list<string> instring) {     if (!directory.exists(path.getdirectoryname(filename)))         directory.createdirectory(path.getdirectoryname(filename));     try {         if (file.exists(filename))             file.delete(filename);          const int buffersize = 65536;  // 64 kilobytes         using (streamwriter sw = new streamwriter(filename, true, encoding.utf8, buffersize)) {             if (instring.count > 0) {                 foreach (string str in instring) {                     sw.writeline(str);                 }             }             else                 sw.writeline("");         }         return true;     }     catch {         return false;     } }

i getting stuff @ beginning of first line though. not show in regular text editor, when opened in ultraedit, , went hex mode, saw this: enter image description here

my programs read text file see characters, , confuse it. list of strings super clean. writing 100 mb text files, setting buffer 64k, tried leaving default same results. on win7 64 bit, using vs 2013.


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