C# 模式匹配或条件

Question

Is it possible to use an OR condition within a if statement when using pattern matching?

I have a pattern match statement like below which works:

if (viewModel is StudentViewModel pageModel)
{
}

I would like to check if viewModel is either a StudentViewModel or ParentViewModel. Is it possible to achieve this without having to write a switch statement or another if statement?

Answer 1

You can test if viewModel is one of two classes like so:

if (viewModel is StudentViewModel || viewModel is ParentViewModel) {
  // ... viewModel is either a StudentViewModel  or a ParentViewModel
}