Answer
A .NET object contains:
- Object Header: Method Table pointer + Sync Block index.
- Aligned fields with padding.
- Method Table with hierarchy, vtable, and GC info.
Quick Answer
Every .NET object on the heap has a header containing a Method Table pointer (links to the type's vtable and metadata) and a Sync Block index (used for lock and GetHashCode). After the header come the object's fields, aligned for the platform. Understanding this explains why small objects still have memory overhead.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ