Will all methods in a logical expressions be executed?

Question

In C#, given the two methods

 bool Action1(object Data);
bool Action2(object Data);

that are used in an if statement like this:

Answer 1

No, C# support logical short-circuiting so if Action1 returned true it would never evaluate Action2.

This simple example shows how C# handles logical short-circuiting:

using System;

class Program
{
    static void Main()
    {
        if (True() || False()) { }  // outputs just "true"
        if (False() || True()) { }  // outputs "false" and "true"
        if (False() && True()) { }  // outputs just "false"
        if (True() && False()) { }  // outputs "true" and "false"
    }

    static bool True()
    {
        Console.WriteLine("true");
        return true;
    }

    static bool False()
    {
        Console.WriteLine("false");
        return false;
    }
}