What are access modifiers in C#?

Question

Accepted Answer

**Access modifiers** — control visibility and accessibility.

**Types:**

**1. public:**
- No restrictions.
- Accessible from anywhere.

**2. private:**
- Only within containing class.
- Default for class members.

**3. protected:**
- Within class and derived classes.

**4. internal:**
- Within same assembly (project).

**5. protected internal:**
- protected OR internal.

**6. private protected:**
- protected AND internal (C# 7.2).

```csharp
public class MyClass {
    public int publicField;        // Anywhere
    private int privateField;      // This class only
    protected int protectedField;  // This + derived
    internal int internalField;    // Same assembly
}
```

**Default access:**
- Top-level classes: internal.
- Class members: private.

C#: What are access modifiers in C#?