To get a trial key
fill out the form below
Team License (standard version)
Enterprise License (extended version)
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
I am interested to try it on the platforms:
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
Examples of errors detected by the V308…

Examples of errors detected by the V3083 diagnostic

V3083. Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it.


Accord.Net

V3083 Unsafe invocation of event 'TempoDetected', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. Accord.Audio Metronome.cs 223


private void timeUp_Elapsed(object sender, ElapsedEventArgs e)
{
  ....
  if (TempoDetected != null)
    TempoDetected(this, EventArgs.Empty);
}

Old NASA World Wind (C#)

V3083 Unsafe invocation of event 'Elapsed', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. TimeKeeper.cs 78


private static void m_timer_Elapsed(....)
{
  ....
  if (Elapsed != null)
     Elapsed(sender, e);
}

Similar errors can be found in some other places:

  • V3083 Unsafe invocation of event 'Navigate', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. InternalWebBrowser.cs 65
  • V3083 Unsafe invocation of event 'Close', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. InternalWebBrowser.cs 73
  • V3083 Unsafe invocation of event 'OnMouseEnterEvent', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. WavingFlagLayer.cs 672
  • And 22 additional diagnostic messages.

Unity3D

V3083 Unsafe invocation of event 'unload', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. AssetBundleDemo AssetBundleManager.cs 47


internal void OnUnload()
{
  m_AssetBundle.Unload(false);
  if (unload != null)
    unload(); // <=
}

Logify Alert Clients

V3083 Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it. LogifyClient.cs 169


protected override bool
RaiseConfirmationDialogShowing(ReportConfirmationModel model) {
  if(ConfirmationDialogShowing != null) {                   // <=
    ConfirmationDialogModel actualModel =
      model as ConfirmationDialogModel;
    if(actualModel == null)
        return false;
    ConfirmationDialogEventArgs args =
      new ConfirmationDialogEventArgs(actualModel);
    ConfirmationDialogShowing(this, args);                  // <=
    return args.Handled;
  }
  return false;
}

Similar errors can be found in some other places:

  • V3083 Unsafe invocation of event 'NotifyProgress', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. Zip.cs 1035
  • V3083 Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it. LogifyClient.cs 156
  • V3083 Unsafe invocation of event 'FocusChanged', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. BreadcrumbsRecorder.cs 391
  • And 4 additional diagnostic messages.

Infer.NET

V3083 Unsafe invocation of event 'Started', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. Evaluator RecommenderRun.cs 115


public class RecommenderRun
{
  ....
  public event EventHandler Started;
  ....
  public void Execute()
  {
    if (this.Started != null)
    {
      this.Started(this, EventArgs.Empty);
    }
      ....
  }
  ....
}

AWS SDK for .NET

V3083 [CWE-367] Unsafe invocation of event 'mOnSyncSuccess', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. AWSSDK.CognitoSync.PCL Dataset.cs 827


protected void FireSyncSuccessEvent(List<Record> records)
{
  if (mOnSyncSuccess != null)
  {
    mOnSyncSuccess(this, new SyncSuccessEventArgs(records));
  }
}

Similar errors can be found in some other places:

  • V3083 [CWE-367] Unsafe invocation of event 'mOnSyncFailure', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. AWSSDK.CognitoSync.PCL Dataset.cs 839
  • V3083 [CWE-367] Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it. AWSSDK.Core.PCL AmazonServiceClient.cs 332
  • V3083 [CWE-367] Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it. AWSSDK.Core.PCL AmazonServiceClient.cs 344
  • And 7 additional diagnostic messages.

ShareX

V3083 [CWE-367] Unsafe invocation of event 'NewsLoaded', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. NewsListControl.cs 111


protected void OnNewsLoaded()
{
  if (NewsLoaded != null)
  {
    NewsLoaded(this, EventArgs.Empty);
  }
}

Telerik UI for UWP

V3083 Unsafe invocation of event 'Completed', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. ActionBase.cs 32


protected virtual void OnCompleted()
{
  this.IsCompleted = true;

  if (this.Completed != null)
  {
    this.Completed(this, EventArgs.Empty);
  }
}

Azure SDK for .NET

V3083 Unsafe invocation of event '_onChange', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. ClientOptionsMonitor.cs 44


private event Action<TOptions, string> _onChange;
....
private void InvokeChanged(....)
{
  ....
  if (_onChange != null)
  {
    _onChange.Invoke(options, name);
  }
}

osu!

V3083 [CWE-367] Unsafe invocation of event 'ObjectConverted', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. BeatmapConverter.cs 82


private List<T> convertHitObjects(....)
{
  ....
  if (ObjectConverted != null)
  {
    converted = converted.ToList();
    ObjectConverted.Invoke(obj, converted);
  }
  ....
}

Emby

V3083 Unsafe invocation of event 'RefreshStarted', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. ProviderManager.cs 943


public void OnRefreshStart(BaseItem item)
{
  ....

  if (RefreshStarted != null)
  {
    RefreshStarted(this, new GenericEventArgs<BaseItem>(item));
  }
}

RunUO

V3083 Unsafe invocation of event 'ServerStarted', NullReferenceException is possible. Consider assigning event to a local variable before invoking it. EventSink.cs 921


public static void InvokeServerStarted()
{
  if ( ServerStarted != null )
    ServerStarted();
}

ILSpy

V3083 Unsafe invocation of event, NullReferenceException is possible. Consider assigning event to a local variable before invoking it. ILSpy MainWindow.xaml.cs 787class ResXResourceWriter : IDisposable


void assemblyList_Assemblies_CollectionChanged(....)
{
  ....
  if (CurrentAssemblyListChanged != null)
    CurrentAssemblyListChanged(this, e);      // <=
}

void assemblyList_Assemblies_CollectionChanged(....)
{
  ....
  CurrentAssemblyListChanged?.Invoke(this, e);
}

This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept