private void OnAppStartup(object sender, StartupEventArgs e)
{
Exit += (_, __) => IsShuttingDown = true;
HasIdentity = PackageHelper.CheckHasIdentity();
PackageVersion = PackageHelper.GetVersion(HasIdentity);
_settings = new AppSettings();
_errorReporter = new ErrorReporter();
if (SingleInstanceAppMutex.TakeExclusivity())
{
Exit += (_, __) => SingleInstanceAppMutex.ReleaseExclusivity();
try
{
ContinueStartup();
}
catch (Exception ex) when(IsCriticalFontLoadFailure(ex))
{
ErrorReporter.LogWarning(ex);
OnCriticalFontLoadFailure();
}
}
else
{
Shutdown();
}
}
public static bool HasIdentity(this Application app)
{
#if VSDEBUG
if (Debugger.IsAttached)
{
return false;
}
#endif
if (_hasIdentity == null)
{
try
{
_hasIdentity = (Package.Current.Id != null);
}
catch (InvalidOperationException ex)
{
_hasIdentity = false;
#if !DEBUG
// We do not expect this to occur in production when the app is packaged.
ErrorReporter.LogWarning(ex);
#else
Trace.WriteLine($"AppExtensions HasIdentity: False {ex.Message}");
#endif
}
}
return (bool)_hasIdentity;
}
private void OnAppStartup(object sender, StartupEventArgs e)
{
Exit += (_, __) => IsShuttingDown = true;
_errorReporter = new ErrorReporter();
if (SingleInstanceAppMutex.TakeExclusivity())
{
Exit += (_, __) => SingleInstanceAppMutex.ReleaseExclusivity();
try
{
ContinueStartup();
}
catch (Exception ex) when(ex.StackTrace.Contains(
"MS.Internal.Text.TextInterface.FontFamily.GetFirstMatchingFont"))
{
ErrorReporter.LogWarning(ex);
OnCriticalFontLoadFailure();
}
}
else
{
Shutdown();
}
}
static void WriteSetting <T>(string key, T value)
{
try
{
Windows.Storage.ApplicationData.Current.LocalSettings.Values[key] = value;
}
catch (Exception ex)
{
// Windows Bug: Windows Storage APIs are still unreliable
ErrorReporter.LogWarning(ex);
}
}
public bool HasKey(string key)
{
var ret = false;
try
{
ret = Windows.Storage.ApplicationData.Current.LocalSettings.Values.ContainsKey(key);
}
catch (Exception ex)
{
ErrorReporter.LogWarning(ex);
}
return(ret);
}
static T ReadSetting <T>(string key, T defaultValue)
{
T ret = defaultValue;
try
{
ret = (T)Windows.Storage.ApplicationData.Current.LocalSettings.Values[key];
}
catch (Exception ex)
{
// Windows Bug: Windows Storage APIs are still unreliable
ErrorReporter.LogWarning(ex);
}
return(ret);
}
