Difference between internal and private

Question

Please explain the difference with example

Craig Murphy · Answer

Private members are accessible only within the body of the class or the struct in which they are declared. Internal types or members are accessible only within files in the same assembly - there's an example available here: http://msdn2.microsoft.com/en-us/library/7c5ka91b(VS.80).aspx Protected members are accessible within its class and by derived classes. Here's a small code snippet that might help explain the use of private a little better: namespace Console___access_modifers { class Program { public class Person { // Only accessible from within class Person private int bankBalance0; public int bankBalance1; public int bankBalance2; protected int bankBalance4; internal int bankBalance5; } public class Adam : Person { // Only accessible from within class Adam private int bankBalance3; public Adam( int b) { // Use the private member bankBalance3 = b; } public int Balance4 { get { return bankBalance4; } set { bankBalance4 = value ; } } } static void Main( string [] args) { // Call the constructor setting the private member Adam a1 = new Adam (100); a1.bankBalance1 = 100; a1.bankBalance2 = 200; // this will not compile - the private member is just that private to the class itself //a1.bankBalance3 = 300; // This works because Adam is derived from Person - protected modifiers can be accessed in derived classes a1.Balance4 = 400; a1.bankBalance5 = 500; Person p1 = new Person (); p1.bankBalance1 = 100; p1.bankBalance2 = 200; p1.bankBalance5 = 500; // this will not compile - the private member is just that private to the class itself //p1.bankBalance0 = 0; } } } HTH