The official Microsoft documentation is not very good at giving an overview of the available exception types in .net Core, so this is my attempt at doing so. In other words, this list is far from exhaustive; instead, I try to list the exception types that I find generally useful.

• System.Exception
  • System.ApplicationException ¹¹ Should not be used in client code (indicates something is wrong with the code on the source level), but I have seen it used.
  • System.Net.Http.HttpRequestException
  • System.SystemException
    • System.ArgumentException
      • System.ArgumentNullException
      • System.ArgumentOutOfRangeException
    • System.FormatException ²² Parser failure.
    • System.IndexOutOfRangeException
    • System.InvalidOperationException ³³ Under the current configuration, this operation cannot be performed.
    • System.NotImplementedException
    • System.NotSupportedException ⁴⁴ The operation is not supported and not meant to be supported either, e.g. modifying a read-only collection.
      • System.PlatformNotSupportedException ⁵⁵ The operation is not supported due to the platform the program runs on.
    • System.NullReferenceException ⁶⁶ Prefer validating early and throwing System.ArgumentNullException.
    • System.TimeoutException
    • System.IO.InvalidDataException ⁷⁷ Raw binary data in an i/o stream did not conform to expectations.
    • System.IO.IOException
      • System.IO.DirectoryNotFoundException
      • System.IO.EndOfStreamException
      • System.IO.FileNotFoundException
    • System.Security.SecurityException