I have some curly question..
I can define alias for the class at top of my document, Such as
using MyName = Bla.Bla.ClassName
But can I define something like this in the method?
No, you can't. If you mean that you want to define a class alias inside a method, this is not possible.
Alias could be defined only at file or namespace level:
using MyName = Bla.Bla.ClassName;
namespace A{
...
}
or
namespace A{
using MyName = Bla.Bla.ClassName
...
}
If you instead mean you want to define a "method alias", this also isn't possible: alias are only for types or namespaces.