Memory allocation when using foreach loops in C#

Question

I know the basics on how foreach loops work in C# (How do foreach loops work in C#)

I am wondering whether using foreach allocates memory that may cause garbage collecti

Answer 1

Because an enumerator keeps hold of the current item. It's like a cursor compared to databases. If multiple threads would access the same enumerator, you would lose control of the sequence. And you would have to reset it to the first item every time a foreach consults it.