The different parts of an Assembly are:

i. Manifest – Also known as the assembly metadata, it has information about the version of an assembly.

ii. Type Metadata – Binary information of the program.

iii. MSIL – Microsoft Intermediate Language code.

iv. Resources – List of related files.

In .NET, an assembly is the fundamental building block of applications. It is a unit of deployment, versioning, and security. Assemblies can be categorized into several parts:

Manifest: This is metadata about the assembly. It contains information like the assembly name, version number, culture, strong name information (if signed), and a list of all files in the assembly.
Type Metadata: This includes metadata about types defined in the assembly. This metadata describes the types, methods, properties, and other members defined in the assembly.
Intermediate Language (IL): When you compile a .NET application, it’s compiled into IL, also known as MSIL (Microsoft Intermediate Language) or CIL (Common Intermediate Language). This IL is stored in the assembly.
Resources: Assemblies can contain resources like images, icons, strings, etc. These resources can be localized for different languages and cultures.
Type Definitions: Assemblies contain definitions for types (classes, interfaces, enums, structs, etc.) that are part of the assembly.
Security Information: Assemblies can have security permissions associated with them, defining what the assembly is allowed to do when executed.
Assembly Metadata: Apart from the manifest, there’s additional metadata about the assembly itself, such as title, description, company, copyright information, etc.

Understanding these parts of an assembly is crucial for .NET developers as it provides insight into how .NET applications are packaged, versioned, and deployed.