c# - streamWriter 重写文件或附加到文件

Question

我正在用这个

for($number=0; $number < 5; $number++){
StreamWriter x = new StreamWriter("C:\\test.txt");
                x.WriteLine(number);
                x.Close();

}

如果 test.text 中有内容，此代码将不会覆盖它。我有两个问题

1: how can I make it overwrite the file
2: how can I append to the same file

使用 C#

Answer 1

试试 FileMode 枚举器:

        FileStream fappend = File.Open("C:\\test.txt", FileMode.Append); // will append to end of file

        FileStream fcreate = File.Open("C:\\test.txt", FileMode.Create); // will create the file or overwrite it if it already exists