I have a .NET CF 3.5 application that runs on Motorola WT41N0 (Windows CE 7). Sometimes it gets the following exception:
System.ApplicationException: ApplicationException
at System.Threading.EventWaitHandle..ctor(Boolean initialState, EventResetMode mode)
at System.Threading.ManualResetEvent..ctor(Boolean initialState)
The exception occurs at a number of different places. Sometimes it occurs in the Motorola barcode scanner API (Symbol.Barcode2). It also occurs at the following code:
private void Transmitter_StatusChanged(object sender, TransmitStatusChangedEventArgs e)
{
Invoke(() =>
{
UpdateScanStatus();
});
}
this is the UpdateScanStatus Method:
private void UpdateScanStatus()
{
int unsent = THSData.Transmitter.PendingScans;
string unsentText = string.Format("Unsent Scans:{0}", unsent);
if (lblUnsent.Text != unsentText)
lblUnsent.Text = unsentText;
if (HeaderBarWarning != unsent > 0)
{
lblUnsent.Visible = unsent > 0;
UpdateHeaderBar(unsent > 0);
}
}
here is the full stack trace for this example:
Fatal Error System.ApplicationException: ApplicationException
at System.Threading.EventWaitHandle..ctor(Boolean initialState, EventResetMode mode)
at System.Threading.ManualResetEvent..ctor(Boolean initialState)
at System.Windows.Forms.Control.TASK.get_AsyncWaitHandle()
at System.Windows.Forms.Control.InvokeHelper(Delegate method, Boolean fSynchronous, Object[] rgobjArgs)
at CoreTT.Scanner.THS.UI.Pages.PageLogin.Transmitter_StatusChanged(Object sender, TransmitStatusChangedEventArgs e)
at CoreTT.Scanner.Common.DataAccess.BaseTransmitter.InvokeStatusChange(String oldStatus, String newStatus, Object statusObject)
at CoreTT.Scanner.Common.DataAccess.BaseTransmitter.set_Status(String value)
at CoreTT.Scanner.Common.DataAccess.BaseTransmitter.Transmit()
at CoreTT.Scanner.Common.DataAccess.BaseTransmitter.timer_TimerCallback(Object state)
at System.Threading.Timer.ring()
Does anyone know what could be causing the error.
