如何在C＃中正确删除并复制到文件夹？

Question

My co-worker and me got a little IT troll battle and I wanted to make an .exe in C# that copies itself to autostart when launched and then shuts down the PC. I got this to work but after a reboot I get an exception that the file already exists. Now I tried to delete it with File.Delete(@Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), fileName)); but I get another exception System.IO.FileNotFoundException: that says it couldn't find "C:\\Windows\\system32\\Test.exe" (Test.exe is the program) I cant post the full error because its in german so, yea. Is there a way to just ignore the exception and overwrite it anyways? Here is my full code:

String fileName = String.Concat(Process.GetCurrentProcess().ProcessName, ".exe");
String filePath = Path.Combine(Environment.CurrentDirectory, fileName);
File.Delete(@Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), fileName));
File.Copy(filePath, Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), fileName));
Process.Start("shutdown", "/s /t 0");

Answer 1

使用File.Copy的重写，该重写带有第三个参数进行覆盖。

File.Copy(filePath, Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), fileName), true);