What is the difference between SynchronizationContext and TaskScheduler?

Question

Accepted Answer

**SynchronizationContext** — thread affinity. **TaskScheduler** — task scheduling.

**SynchronizationContext:**
- Thread affinity.
- UI thread.
- Post/Send.

**TaskScheduler:**
- Task scheduling.
- Concurrency.
- Options.

```csharp
// SynchronizationContext
var context = SynchronizationContext.Current;
context.Post(_ => UpdateUI(), null);

// TaskScheduler
await Task.Factory.StartNew(
    () => DoWork(),
    CancellationToken.None,
    TaskCreationOptions.LongRunning,
    TaskScheduler.Default);
```

**Key:** SyncContext for UI, TaskScheduler for tasks.

C#: What is the difference between SynchronizationContext and TaskScheduler?