C# Using Alias for Namespace Classes

Using aliases for classes

We can avoid using prefix System to Console class by implementing the using System; statement.

Using alias option in C#, we can also avoid using prefix System.Console to use WriteLine method.

    using alias-name = class-name;

C# Program for using Alias for Console class

In this C# program, alias is created for System.Console class and used alias name to access System.Console class methods.

 /*
 This C# program Using alias for System namespace classes
 Also added single and multiline comments.
 */
using P = System.Console; // System is a namespace

public class FirstApp
{
    // Main method which starts the program execution.
    public static void Main()
    {
        // Prints welcome text
        P.WriteLine("Welcome to codingpointer.com to learn C#.");
        // Waits till any key press
        P.ReadKey();
    }
}

Output:

c:> csc FirstApp.cs
c:> FirstApp
Welcome to codingpointer.com to learn C#.

Using String in WriteLine method

here declare string type text, also assiging string value and used in WriteLine method to display the string.

    /*
 This C# program Using alias for System namespace classes
 Also added single and multiline comments.
 */
using P = System.Console; // System is a namespace

public class FirstApp
{
    // Main method which starts the program execution.
    public static void Main()
    {
        string text = "Welcome to codingpointer.com to learn C#.";
        // Prints welcome text
        P.WriteLine(text);
        // Waits till any key press
        P.ReadKey();
    }
}

Output:

c:> csc FirstApp.cs
c:> FirstApp
Welcome to codingpointer.com to learn C#.