In C#, is there a way to instantiate an instance of a class without invoking its constructor?
Assume the class is public and is defined in a 3rd par
No one here has quite clarified what is meant by "It can't be done."
The constructor is what creates the object. Your question is akin to "How can I build a sand castle without shaping it like a castle?" You can't -- All you will have is a pile of sand.
The closest thing you could possible do is to allocate a block of memory the same size as your object:
byte[] fakeObject = new byte[sizeof(myStruct)];
(NOTE: even that will only work in MyStruct is a value type)