.NET
├─ CLR
└─ Libraries (as assemblies)
├─ BCL
└─ FCL
Assemblies
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Libraries in .NET are distributed as assemblies.
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Examples:
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System.Private.CoreLib.dll-
It contains fundamental types:
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Object -
String -
Array -
Int32 -
Console
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These are essential for the runtime itself.
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System.Collections.dll -
System.Runtime.dll
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Assemblies contain:
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IL (Intermediate Language) code
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metadata
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type definitions
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Assemblies can be loaded dynamically.
Assembly.LoadFrom("plugin.dll");
BCL (.NET Base Class Library)
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Is the core standard library of .NET.
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It provides fundamental types and utilities used by nearly every .NET program.
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System-
Int32 -
String -
Object -
Math -
Console
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System.Collections-
Queue<T> -
Stack<T>
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System.Collections.Generic-
List<T> -
Dictionary<TKey,TValue>
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System.Threading-
Thread -
Task -
Mutex -
Semaphore
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System.Threading.Tasks -
System.IO-
File -
FileStream -
BinaryReader -
BinaryWriter
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System.Memory-
Span<T> -
Memory<T>
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FCL (Framework Class Library)
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Is a broader set of libraries that includes the BCL plus higher-level APIs.
| Area | Libraries |
| ------------- | ------------------ |
| networking |
System.Net
|
| web |
ASP.NET
|
| UI |
WPF
,
WinForms
|
| serialization |
System.Text.Json
|
| database |
EntityFramework
|