/// <summary>
/// txt に書き足す。string[ , ]を記録する
/// </summary>
/// <param name="textFileName"></param>
/// <param name="writtenText"></param>
/// <returns></returns>
public static void WriteText(string textFileName, string[,] writtenText, bool append, string encodingName = "Shift_JIS")
{
string[] combined = IOTypeChange.CombineArrayToStringByComma(writtenText);
WriteText(textFileName, combined, append, encodingName);
}