What does the following function signature denote? public static intCharLength(this string inputStr)

What is the purpose of ?? (Two question mark) in C#? Example : Class object ??= new Class();

Consider the following statements and pick the most appropriate option: Statement 1: Value type variables store their data on the heap. Statement 2: Reference type variables store their data on the stack.

How can a function be defined in a derived class having the same name as a non-virtual function in the base class?

Which of the following statements are false regarding the 3 timer classes provided by the .NET framework? a) System.Windows.Forms.Timer b) System.Timers.Timer c) System.Threading.Timer

Which of the following statements is correct about the ref and out keywords?

Byte b1 = 254; Byte b2 = 1; Byte b3 = b1 + b2; Console.WriteLine(b3);

What does the following statement do: delegate double Doubler(double x); ?

What is the output of the following program? class Program { static void Main() { int? number = null; Console.WriteLine(number.ToString()); } }

namespace DocGen { class Skills { public void Test(T t) { } } } According to C# standards and specifications, the documentation generator ID string corresponding to 'Test' method from the code above should be:

enum Score { Awful, Soso, Cancode } Given the enum above, which statement(s) will generate a compiler error?