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Uncatchable Exceptions

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Michael Damatov edited this page Sep 10, 2025 · 7 revisions

Exceptions that should never be caught

The analyzer discourages catching of some .NET Framework exceptions.

The exception cannot be caught.

  • System.Security.HostProtectionException

The exception indicates a bug that can be avoided.

  • System.AccessViolationException
  • System.AppDomainUnloadedException
  • System.ArgumentException
  • System.ArgumentNullException
  • System.ArgumentOutOfRangeException
  • System.ArrayTypeMismatchException
  • System.Collections.Generic.KeyNotFoundException
  • System.ComponentModel.InvalidEnumArgumentException
  • System.Configuration.SettingsPropertyIsReadOnlyException
  • System.Configuration.SettingsPropertyNotFoundException
  • System.Configuration.SettingsPropertyWrongTypeException
  • System.Data.DeletedRowInaccessibleException
  • System.Data.EvaluateException
  • System.Data.InRowChangingEventException
  • System.Data.InvalidConstraintException
  • System.Data.InvalidExpressionException
  • System.Data.MissingPrimaryKeyException
  • System.Data.NoNullAllowedException
  • System.Data.ReadOnlyException
  • System.Data.RowNotInTableException
  • System.Data.StrongTypingException
  • System.Data.SyntaxErrorException
  • System.Data.VersionNotFoundException
  • System.Diagnostics.Contracts.ContractException
  • System.Diagnostics.UnreachableException
  • System.DuplicateWaitObjectException
  • System.FieldAccessException
  • System.IndexOutOfRangeException
  • System.InvalidCastException
  • System.MemberAccessException
  • System.MethodAccessException
  • System.MissingFieldException
  • System.MissingMemberException
  • System.MissingMethodException
  • System.MulticastNotSupportedException
  • System.NotImplementedException
  • System.NotSupportedException
  • System.NullReferenceException
  • System.ObjectDisposedException
  • System.PlatformNotSupportedException
  • System.RankException
  • System.Runtime.AmbiguousImplementationException
  • System.Runtime.CompilerServices.SwitchExpressionException
  • System.Runtime.InteropServices.InvalidComObjectException
  • System.Runtime.InteropServices.InvalidOleVariantTypeException
  • System.Runtime.InteropServices.MarshalDirectiveException
  • System.Runtime.InteropServices.SafeArrayRankMismatchException
  • System.Threading.ThreadAbortException
  • System.Windows.Automation.ElementNotEnabledException
  • System.Windows.ResourceReferenceKeyNotFoundException

The exception represents an unrecoverable state.

  • System.OutOfMemoryException
  • System.StackOverflowException

The exception should not be used in any way.

  • Microsoft.JScript.BreakOutOfFinally
  • Microsoft.JScript.CmdLineException
  • Microsoft.JScript.ContinueOutOfFinally
  • Microsoft.JScript.EndOfFile
  • Microsoft.JScript.JScriptException
  • Microsoft.JScript.NoContextException
  • Microsoft.JScript.ParserException
  • Microsoft.JScript.ReturnOutOfFinally
  • Microsoft.VisualBasic.CompilerServices.IncompleteInitialization
  • Microsoft.VisualBasic.CompilerServices.InternalErrorException
  • System.Net.Mail.SmtpFailedRecipientsException

Note

Not all .NET APIs are made consistently. For example, the Process.GetProcessById method throws an ArgumentException, which cannot be avoided in any way. In such a case the warning should just be suppressed.

Note

Please feel free to raise an issue if you mean that some exceptions are missing or were incorrectly put in the list.

Note

The analyzer can be configured or deactivated in the ReSharper Options or Rider Settings dialog.

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