.NET interview questions: - How can you define a property read only for external world and writable in the same assembly?

Let’s us first try to understand this question. Let’s say if you have a class called as “Customer” with a property “CustomerCode”.Now you want that anyone can read from the “CustomerCode” property but this property can only be set from within the assembly.

Customer obj = new Customer();

obj.CustomerCode = "c001";

This can be achieved by have different access modifiers for “SET” and “GET properties on the “CustomerCode” property.

So for the “GET” we will have public access modifiers and for “SET” we will apply internal access modifiers. Now because “GET” is public this property can be read anywhere and because the “SET” is internal it can only be accessed from within assembly. Below goes the code for the same.

class Customer

{

private string _CustomerCode = "";

public string CustomerCode

{

get { return _CustomerCode; }

internal set { _CustomerCode = value; }

}

See the following .NET and C# interview questions with answers video on IL code, CLR, CTS, CAS on UML: -