使用的AutoResetEvent调用例外
-
22-08-2019 - |
题
C#2005
我使用的背景工人来处理一些登录信息。然而,后台工作必须停止,等待2个事件的发生。一旦这些已经完成了后台工作就可以完成自己的工作。它们是回调将调用的AutoResetEvent的集()方法。
所以我使用的AutoResetEvent当这些事件2完成设置。但是,我似乎收到此错误信息: “异常已被调用的目标抛出。”
和内部异常 索引超出范围。必须为非负且小于集合的大小。参数名称:索引”
的异常通常当注册成功离开范围闪光。
非常感谢任何建议
的背景工人的代码。
// Waiting for 'Account in use' and 'Register success or failure'
AutoResetEvent[] loginWaitEvents = new AutoResetEvent[]
{
new AutoResetEvent(false),
new AutoResetEvent(false)
};
private void bgwProcessLogin_DoWork(object sender, DoWorkEventArgs e)
{
Console.WriteLine("Wait until event is set or timeout");
loginWaitEvents[0].WaitOne(3000, true);
if (this.accountInUseFlag)
{
if (this.lblRegistering.InvokeRequired)
{
///this.lblRegistering.Invoke(new UpdateRegisterLabelDelegate(this.UpdateRegisterLabel), "Account in use");
}
else
{
///this.lblRegistering.Text = "Account in use";
}
// Failed attemp
e.Cancel = true;
// Reset flag
//this.accountInUseFlag = false;
return;
}
else
{
// Report current progress
//this.bgwProcessLogin.ReportProgress(7, "Account accepted");
}
Console.WriteLine("Just Wait the result of successfull login or not");
loginWaitEvents[1].WaitOne();
Console.WriteLine("Results for login registionSuccess: [ " + registerSuccess + " ]");
if (this.registerSuccess)
{
// Report current progress
//this.bgwProcessLogin.ReportProgress(7, "Register Succesfull");
// Reset flag
//this.registerSuccess = false;
}
else
{
if (this.lblRegistering.InvokeRequired)
{
//this.lblRegistering.Invoke(new UpdateRegisterLabelDelegate(this.UpdateRegisterLabel), "Failed to register");
}
else
{
// this.lblRegistering.Text = "Failed to register";
}
// Failed attemp
e.Cancel = true;
return;
}
}
// Wait for the callback to set the AutoResetEvent
// Error sometimes happens when the function leaves scope.
private void VaxSIPUserAgentOCX_OnSuccessToRegister(object sender, EventArgs e)
{
Console.WriteLine("OnSuccessToRegister() [ Registered successfully ]");
this.registerSuccess = true;
this.loginWaitEvents[1].Set();
}
// If the flag is not set, then just time out after 3 seconds for the first LoginWaitEvent.waitOne(3000, true)
private void VaxSIPUserAgentOCX_OnIncomingDiagnostic(object sender, AxVAXSIPUSERAGENTOCXLib._DVaxSIPUserAgentOCXEvents_OnIncomingDiagnosticEvent e)
{
string messageSip = e.msgSIP;
//Indicates that a user is already logged on (Accout in use).
string sipErrorCode = "600 User Found";
if (messageSip.Contains(sipErrorCode))
{
// Set flag for account in use
this.accountInUseFlag = true;
Console.WriteLine("OnIncomingDiagnostic() WaitEvent.Set() accountInUseFlag: " + this.accountInUseFlag);
loginWaitEvents[0].Set();
}
}
解决方案
有是最有可能在UpdateRegisterLabel方法索引错误。
从内部异常获得堆栈跟踪,它应该更紧密地指向你在哪里。
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