DIt's pretty much just a nullable cast
DThe
is and as operators test the type of an object. The typeof keyword returns the type of a variable. Casts try to convert an object to a variable of a different type.
DHere's the keywords overview on MSDN https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/
FTry to avoid casting as much as possible. Use
as if you're not sure if the cast is valid, and follow it with a null check. Use explicit casting (type)variable when you're sure of the cast.
CJust to add to that -- always check for null after using
as. If you expect the cast to succeed, always use a proper (T) cast. The reason is that it's a lot easier to debug a failed cast if you used a proper (T) cast, as the exception is thrown at the point that the cast failed and the exception message is helpful, as opposed to getting a NullReferenceException at some point after a failed as cast with no information on why the cast failed
AWas this issue resolved? If so, run
/close- otherwise I will mark this as stale and this post will be archived until there is new activity.
