c＃sendkeys.send/sendwait访问被拒绝（winform）

发布于 2025-01-29 10:02:19 字数 1541 浏览 2 评论 0原文

我创建了一个输入模拟器，您（用户）可以创建一个命令列表，并且该应用程序将根据您声明/创建的内容执行它。这是关于鼠标和键盘输入的。

详细信息

•我使用sendkeys.send（）或sendkeys.sendwait（）用于键盘输入。

•我尝试了两种执行类型

• Upon opening the app, if you (the user) doesn't press anything in a couple of seconds, the list of commands will execute.
• Threading: The list of commands will run every hour until you stop the app or the thread.

问题

•我会在尝试执行键盘输入时间歇性地拒绝'访问权限。

方案

•任务调度程序（打开应用程序）（每1小时重复一次）或线程（每小时执行命令）

•任务调度程序或线程的第一次运行没有错误消息，但是对于下一个重复/下一个小时，它将间歇性地触发该错误。

************** Exception Text **************
System.ComponentModel.Win32Exception (0x80004005): Access is denied
   at System.Windows.Forms.SendKeys.SendInput(Byte[] oldKeyboardState, Queue previousEvents)
   at System.Windows.Forms.SendKeys.Send(String keys, Control control, Boolean wait)
   at System.Windows.Forms.SendKeys.SendWait(String keys)
   at WinformApp.clsAutomation.Start(String& ex)

添加了详细信息

•我每次发生错误时，每2分钟添加了每2分钟的命令/自动化，每次发生一次，这是同一件事，但仍会发生错误，（我将VNCViewer使用到PC上）我连接到PC（用于监视）应用程序应按照应有的运行，不会发生错误。

•我的应用程序作为管理员运行。

•我删除了窗户的睡眠/空闲时间。

•OS：Windows 10

代码部分


// Some checking are already done, and this is the part for SendKeys.SendWait

try
{

    process.WaitForInputIdle();
    SendKeys.SendWait(_string);
}
catch (Exception ex)
{
   // Log error message
}

原文

I created an input simulator wherein you (the user) can create a list of commands, and the application will execute it based on what you'd declared/created. It's about mouse and keyboard inputs.

DETAILS

• I use SendKeys.Send() or SendKeys.SendWait() for keyboard inputs.

• I tried 2 types of execution

• Upon opening the app, if you (the user) doesn't press anything in a couple of seconds, the list of commands will execute.
• Threading: The list of commands will run every hour until you stop the app or the thread.

PROBLEM

• I get an error 'Access is denied' intermittently whenever it tries to do keyboard inputs.

SCENARIO

• Task Scheduler (to open the app) (repeat every 1 hour)
or Threading (every hour execution of commands)

• The first run of task scheduler or thread it has no error message, but for the next repeat/next hour it will trigger the error intermittently.

************** Exception Text **************
System.ComponentModel.Win32Exception (0x80004005): Access is denied
   at System.Windows.Forms.SendKeys.SendInput(Byte[] oldKeyboardState, Queue previousEvents)
   at System.Windows.Forms.SendKeys.Send(String keys, Control control, Boolean wait)
   at System.Windows.Forms.SendKeys.SendWait(String keys)
   at WinformApp.clsAutomation.Start(String& ex)

ADDED DETAILS

• I added redo the commands/automation for every 2 minutes for 20 maximum tries everytime the error occurs and it's the same thing, the error still occurs, (I use VNCviewer to the PC) but everytime I connect to the pc (for monitoring) the apps run as it should be, no error occurs.

• My app runs as admin.

• I removed sleep/idle time of windows.

• OS: Windows 10

CODE PART


// Some checking are already done, and this is the part for SendKeys.SendWait

try
{

    process.WaitForInputIdle();
    SendKeys.SendWait(_string);
}
catch (Exception ex)
{
   // Log error message
}

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自由范儿 2025-02-05 10:02:19

锁定帐户时，Windows不允许您运行键盘和鼠标仿真。
要解决这个问题，请使用 https://learlen.microsoft.com/en-en--en---en---en--- US/sysinternals/downloads/autologon 要在启动时自动登录您的帐户（它将在不锁定您的帐户的情况下执行此操作），并在每个计划执行之前重新启动计算机。

远程桌面连接默认情况下，当您结束会话时，默认情况下锁定了您的帐户，我怀疑vncviewer正在执行相同的操作。

由于您使用VNCViewer，因此在结束会话结束时可能会有一种方法可以禁用计算机的锁定，从而允许您的任务运行。

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