Do properties have volatile effect?

Question

In the code below will read1 be always equal to read2, provided property Flag can be changed from other threads? Concern here is that

Answer 1

The lack of volatile for an autoproperty is disappointing. I discovered that when using a struct with [StructLayout(LayoutKind.Sequential, Pack = 4)] and Marshal.PtrToStructure the byte layout is not preserved as expected if an autoproperty is used. What I did was use private backing fields and put the properties at the end.