C# Namespace Aptitude Questions and Answers | Set 3

1. In C#.Net, "using" statement is used to import the namespace in our program
2. We can create a new namespace with the help of "using" statement
3. We cannot use "using" statement in C#.NET
4. We can use "using" statement in VB.NET only

1. Add reference of the library then use classes present in the namespace.
2. Add reference of the library and include namespace into the project and then we can use classes present in the namespace.
3. Include namespace in our project then use classes present in the namespace.
4. We need to install namespace into GAC and then we can use classes present in the namespace.

1. Yes
2. No

using System;

namespace my_namespace
{
    class sample
    { 
        public static void sayHello()
        {
            Console.WriteLine("Hello");
        }
    }

    class program
    {
        static void Main(string[] args)
        {
            sample.sayHello();
        }
    }
}

1. Syntax error
2. Hello
3. Linker error
4. Runtime exception

1. 2
2. 1
3. Any number of classes
4. 5