c# - 试图创建一个文件并立即删除它

Question

// (1) create test file and delete it again
File.Create(Path.Combine(folder, "testfile.empty"));
File.Delete(Path.Combine(folder, "testfile.empty"));

最后一行抛出异常:

The process cannot access the file '\\MYPC\C$_AS\RSC\testfile.empty' because it is being used by another process.

这是为什么？

Answer 1

File.Create 返回一个您尚未关闭的流。

using(var file = File.Create(path)) {
   // do something with it
}
File.Delete(path);

应该工作；或更简单:

File.WriteAllBytes(path, new byte[0]);
File.Delete(path);

甚至只是:

using(File.Create(path)) {}
File.Delete(path);