First C# Program
In the previous section, we have created a console project. Now, let's write simple C# code to understand important building blocks.
Every console application starts from the Main() method of Program class. The following example code displays "Hello World!!" on the console.
Example: Simple Console Project with C#
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace CSharpTutorials { class Program { static void Main(string[] args) { string message = "Hello World!!"; Console.WriteLine(message); } } }
- .NET application takes the reference of the necessary .NET framework namespaces that it is planning to use with the "using" keyword e.g. using System .Text
- Declare the namespace for the current class using the "namespace" keyword.
- We then declared a class using the "class" keyword: class Program
- The Main() is a method of Program class which is the entry point of the console application.
- String is a data type.
- 'message' is a variable, that holds the value of a specified data type.
- "Hello World!!" is the value of the message variable.
- Console is a .NET framework class. WriteLine() is a method which you can use to display messages to the console.
Compile and Run C# Program
In order to see the output of the above C# program, we have to compile it and run it by pressing Ctrl + F5, or clicking Run button or by clicking the "Debug" menu and clicking "Start Without Debugging". You will see the
Following output in the console.
OutPut:-
Hello World!!
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