Question

我知道之前曾多次询问过这个问题，但我仍然无法找到原因。我确定该文件不被外部程序使用，因此原因必须是此方法。错误发生在我第二次初始化StreamWriter对象的行中（int for for循环）。

static void WriteData(PeopleContainer people)
    {
        var file = new StreamWriter(File.Open(Directory + Output1, FileMode.Create), Encoding.GetEncoding(1257));
        for (int i = 0; i < people.SeenByEveryone.Count; i++)
        {
            Film film = people.SeenByEveryone.GetFilm(i);
            file.WriteLine("{1}{0}{2}{0}{3}{0}{4}{0}{5}{0}{6}{0}{7}{0}{8}", CsvSeparator, film.Title, film.Year, 
                           film.Director, film.Genre, film.Company, film.BoxOffice, film.Actors[0], film.Actors[1]);
        }

        for (int i = 0; i < people.Count; i++)
        {
            Person person = people.GetPerson(i);
            string path = String.Format("{0}Rekomendcija_{1}_{2}.csv", Directory, person.FirstName, person.LastName);

            file = new StreamWriter(File.Open(path, FileMode.Create), Encoding.GetEncoding(1257));
            for (int j = 0; j < person.RecomemdedFilms.Count; j++)
            {
                Film film = person.RecomemdedFilms.GetFilm(j);
                file.WriteLine("{1}{0}{2}{0}{3}{0}{4}{0}{5}{0}{6}{0}{7}{0}{8}", CsvSeparator, film.Title, film.Year,
                               film.Director, film.Genre, film.Company, film.BoxOffice, film.Actors[0], film.Actors[1]);
            }
        }
    }

Answer 1

完成后，您应该丢弃Stream.Writer。

        using(var file = new StreamWriter(File.Open(Directory + Output1, FileMode.Create), Encoding.GetEncoding(1257)))
        {
            //your loop
        }

        for (int i = 0; i < people.Count; i++)
        {

            using(file = new StreamWriter(File.Open(path, FileMode.Create), Encoding.GetEncoding(1257)))
            {
                 // other loop
            }
        }

修改

喜欢@enkryptor提到：如果你想在第二个循环中将所有推荐的电影放在你的文件中，你应该在你的循环中使用StreamWriter 而不是。你还应该放FileMode.OpenOrCreate

using(file = new StreamWriter(File.Open(path, FileMode.OpenOrCreate), Encoding.GetEncoding(1257))) { for (int i = 0; i < people.Count; i++) { file.WriteLine(...//your stuff) } }

该过程无法访问文件路径＆＃39;因为它正被另一个进程使用

1 个答案: