C#中的"MoveFile"函数(重启后删除文件)

Question

我需要一个例子,可以让我传递一个参数

例如执行delete.exe /killme.txt

所以它会在重启后使用"MoveFile"删除killme.txt.

虽然请不要MS预编译版本,因为它有一个恼人的免责声明,每次它在不同的计算机上运行.

Answer 1

你需要MoveFileEx的P/Invoke声明:

[Flags]
internal enum MoveFileFlags
{
    None = 0,
    ReplaceExisting = 1,
    CopyAllowed = 2,
    DelayUntilReboot = 4,
    WriteThrough = 8,
    CreateHardlink = 16,
    FailIfNotTrackable = 32,
}

internal static class NativeMethods
{
    [DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Unicode)]
    public static extern bool MoveFileEx(
        string lpExistingFileName,
        string lpNewFileName, 
        MoveFileFlags dwFlags);
}

还有一些示例代码:

if (!NativeMethods.MoveFileEx("a.txt", null, MoveFileFlags.DelayUntilReboot))
{
    Console.Error.WriteLine("Unable to schedule 'a.txt' for deletion");
}

Answer 2

因为您希望在重新启动后执行此操作作为要求,您可以使用Windows任务计划程序API.您可以通过添加对COM库TaskScheduler 1.1类型库的引用来在C#中调用它.下面是登录时运行Notepad.exe的完整代码示例.

此外,这是另一个资源:http://bartdesmet.net/blogs/bart/archive/2008/02/23/calling-the-task-scheduler-in-windows-vista-and-windows-server-2008-from -managed-code.aspx

您可以使用此代码从Windows命令行调用系统命令DEL.

namespace TaskSchedulerExample {
    using System;
    using TaskScheduler;

    class Program {
        static void Main(string[] args) {
            var scheduler = new TaskSchedulerClass();
            scheduler.Connect(null, null, null, null);

            ITaskDefinition task = scheduler.NewTask(0);
            task.RegistrationInfo.Author = "DCOM Productions";
            task.RegistrationInfo.Description = "Demo";

            ILogonTrigger trigger = (ILogonTrigger)task.Triggers.Create(_TASK_TRIGGER_TYPE2.TASK_TRIGGER_LOGON);
            trigger.Id = "Logon Demo";

            IExecAction action = (IExecAction)task.Actions.Create(_TASK_ACTION_TYPE.TASK_ACTION_EXEC);
            action.Id = "Delete";
            action.Path = "c:\\delete.exe";          // Or similar path
            action.WorkingDirectory = "c:\\";        // Working path
            action.Arguments = "c:\\killme.txt";     // Path to your file

            ITaskFolder root = scheduler.GetFolder("\\");
            IRegisteredTask regTask = root.RegisterTaskDefinition("Demo", task, (int)_TASK_CREATION.TASK_CREATE_OR_UPDATE, null, null, _TASK_LOGON_TYPE.TASK_LOGON_INTERACTIVE_TOKEN, "");

            //Force run task
            //IRunningTask runTask = regTask.Run(null);
        }
    }
}

这为您提供了一些灵活性.您可以运行自己的delete.exe,也可以调用Windows命令行来执行DEL命令.