C# 使用SendKeys（）时-InvalidOperationException:遇到撤消操作
这是我的密码C# 使用SendKeys（）时-InvalidOperationException:遇到撤消操作,c#,sendkeys,invalidoperationexception,C#,Sendkeys,Invalidoperationexception,这是我的密码 public void KeyPress() { //Finds the target window and sends a key command to the application Process[] processes = Process.GetProcessesByName("calc"); IntPtr calculatorHandle; foreach (Process proc in proce
public void KeyPress()
{
//Finds the target window and sends a key command to the application
Process[] processes = Process.GetProcessesByName("calc");
IntPtr calculatorHandle;
foreach (Process proc in processes)
{
calculatorHandle = proc.MainWindowHandle;
if (calculatorHandle == IntPtr.Zero)
{
MessageBox.Show("Calculator is not running.");
return;
}
SetForegroundWindow(calculatorHandle);
break;
}
SendKeys.SendWait("1");
}
System.InvalidOperationException was unhandled
Message="The Undo operation encountered a context that is different from what was applied in the corresponding Set operation. The possible cause is that a context was Set on the thread and not reverted(undone)."
Source="mscorlib"
StackTrace:
at System.Threading.SynchronizationContextSwitcher.Undo()
at System.Threading.ExecutionContextSwitcher.Undo()
at System.Threading.ExecutionContext.runFinallyCode(Object userData, Boolean exceptionThrown)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteBackoutCodeHelper(Object backoutCode, Object userData, Boolean exceptionThrown)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Net.ContextAwareResult.Complete(IntPtr userToken)
at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)
InnerException:
我不确定问题出在哪里，这个数字会出现在我的计算器中，但会弹出错误我自己玩过这个，无法复制它 做了一个谷歌搜索，找到了下面的文章，其中有不少建议，你可能想试试。 当然，你可能已经看过了，这就是你来这里的原因 您可能需要提供有关调用代码的上下文的更广泛信息。该应用程序的功能是什么，如何适应？你能告诉我它在哪一行代码上失败了吗
另外，正如@SLaks所建议的，您能提供关于内部异常的更多详细信息吗？好的，根据您对我的问题的回答，我将做出两个假设
如果上述假设是正确的，那么我怀疑问题在于SendKeys在内部使用windows消息传递，而问题的发生是因为SendkKeys消息是从UI线程以外的线程发送的。如果这是正确的，您可以通过调用按键功能来解决问题。使用
Control.InvokeSendKeysInnerExceptionKeyPress