Question

When I create an object/variable inside a method, after the method calls, all the objects will be set to be collected by GC and all “primitive” variables (int, string, decimal…) are destroyed, right?

So, if yes:

public void MyMethod()
{
    // Imagine an class that connects with ftp server
    MyObject o = new MyObject();
    o.Connect(); 
}

If i have an error in the line o.Connect() and I have a try`catchonly to log the error,MyObject o` will be collected by GC?

Answer 1

There is no set time when the garbage collector does its "collecting." There are three "generations" of objects and objects are promoted up a generation if they survive collection. So yes, if you "catch" the error in a try/catch block then the garbage collector will free up the memory taken up by your object.

You can find out more about garbage collection here