C # learn from others-access modifier,

C # learn from others-access modifier,

C # contains four access modifiers and one combination modifier:

Public: Access is unrestricted.

Protected: access is limited to include classes or types derived from include classes.

Internal: access is limited to the current Assembly.

Private: access is limited to include types.

Protected internal: access restriction to the current Assembly or a category that contains a derived type.

Reference https://docs.microsoft.com/zh-cn/dotnet/articles/csharp/language-reference/keywords/access-modifiers