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Refact uncaught exception handlers (Program)

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This commit is contained in:
Waldi Ravens 2015-08-06 06:47:48 +02:00
parent 10651cfc03
commit e203f61a9f
1 changed files with 36 additions and 18 deletions
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54
src/Program.cs
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@ -28,24 +28,45 @@ namespace Nikse.SubtitleEdit
Application.Run(new Main());
}
// Handle the UI exceptions by showing a dialog box, and asking the user whether or not they wish to abort execution.
private static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
{
if (!(e.Exception is System.Globalization.CultureNotFoundException)) // To avoid error when changing language (on some computers) - see https://github.com/SubtitleEdit/subtitleedit/issues/719
var exc = e.Exception;
// Ignore CultureNotFoundException to avoid error when changing language (on some computers) - see https://github.com/SubtitleEdit/subtitleedit/issues/719
if (!(exc is System.Globalization.CultureNotFoundException))
{
ShowThreadExceptionDialog("Unhandled exception in SubtitleEdit.exe", e.Exception);
var dr = DialogResult.Abort;
try
{
var cap = "Windows Forms Thread Exception";
var msg = "An application error occurred in Subtitle Edit." +
"\nPlease report at https://github.com/SubtitleEdit/subtitleedit/issues with the following information:" +
"\n\nError Message:\n" + exc.Message +
"\n\nStack Trace:\n" + exc.StackTrace;
dr = MessageBox.Show(msg, cap, MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Stop, MessageBoxDefaultButton.Button1);
}
catch
{
}
if (dr == DialogResult.Abort)
{
Application.Exit();
}
}
}
// Handle the UI exceptions by showing a dialog box, and asking the user whether
// or not they wish to abort execution.
// NOTE: This exception cannot be kept from terminating the application - it can only
// log the event, and inform the user about it.
// Handle the non-UI exceptions by logging the event to the ThreadException event log before
// the system default handler reports the exception to the user and terminates the application.
// NOTE: This exception handler cannot prevent the termination of the application.
private static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
{
try
{
var ex = (Exception)e.ExceptionObject;
const string errorMsg = "An error occurred in Subtitle Edit. Please contact the adminstrator with the following information:\n\n";
var exc = e.ExceptionObject as Exception;
var msg = "A fatal non-UI error occurred in Subtitle Edit." +
"\nPlease report at https://github.com/SubtitleEdit/subtitleedit/issues with the following information:" +
"\n\nError Message:\n" + exc.Message +
"\n\nStack Trace:\n" + exc.StackTrace;
// Since we can't prevent the app from terminating, log this to the event log.
if (!EventLog.SourceExists("ThreadException"))
@ -56,15 +77,18 @@ namespace Nikse.SubtitleEdit
// Create an EventLog instance and assign its source.
using (var eventLog = new EventLog { Source = "ThreadException" })
{
eventLog.WriteEntry(errorMsg + ex.Message + "\n\nStack Trace:\n" + ex.StackTrace);
eventLog.WriteEntry(msg);
}
}
catch (Exception exc)
catch (Exception ex)
{
try
{
var errorMsg = "Fatal Non-UI Error. Could not write the error to the event log. Reason: " + exc.Message;
MessageBox.Show(errorMsg, "Fatal Non-UI Error in Subtitle Edit", MessageBoxButtons.OK, MessageBoxIcon.Stop);
var cap = "Non-UI Thread Exception";
var msg = "A fatal non-UI error occurred in Subtitle Edit." +
"\nCould not write the error to the event log." +
"\nReason: " + ex.Message;
MessageBox.Show(msg, cap, MessageBoxButtons.OK, MessageBoxIcon.Stop);
}
finally
{
@ -73,11 +97,5 @@ namespace Nikse.SubtitleEdit
}
}
private static void ShowThreadExceptionDialog(string title, Exception e)
{
var errorMsg = "An application error occurred. Please contact the adminstrator with the following information:\n\n" + e.Message + "\n\nStack Trace:\n" + e.StackTrace;
MessageBox.Show(errorMsg, title, MessageBoxButtons.AbortRetryIgnore, MessageBoxIcon.Stop);
}
}
}