How to check if an object is not of a particular type?

Question

I want to check if an object is not of a particular type. I know how to check if something is of a particular type:

if (t is TypeA)
{
   ...
}
         


        

Answer 1

I usually stick the null and type checking all in one line:

if (t == null || !(t is TypeA)) {
  ...
}

If TypeA is a struct, you'll need to handle it slightly differently again:

if (t == null || t.GetType() != typeof(TypeA)) {
  ...
}