C # Compiler Optimization credit? Questions about Code related to generics

In some of the code I designed, the code for customizing serialized objects is as follows:

Code

For (INT I = 0; I <this. Entities. length; I ++)
{
// Here, when T is a structure type, it can still be processed normally. In fact, the struct cannot be compared with null.
// The Judgment condition may be optimized when the compilation system is compiled, that is, this. entities [I] = NULL does not exist.
If (this. entities [I] = NULL)
{
Stream. writebyte (0); // null
Continue;
}
Else
{
Stream. writebyte (1); // not null
Writeentity (stream, this. entities [I]);
}
}

 

The definition of entities is public T [] entities {Get; set;}. all instances of the serialization class or structure can work normally.

You can only make the above guesses if you cannot find the cause for the moment.