c# is language as same as java, here we have namespace which work like package.
Here console.readline work for print any thing on the screen, and console.readline work for reading or we can say for scaning purpose.
c# is also a object oriented programming language
 

program 1

using system;
using system.collection.generic;
using system.linq;
using system.text;

namespace program_1
{
class print
{
static void Main(String[] args)
{
console.WriteLine("this is the first program of c#");
console.ReadLine();
print pr=new print();

}

}

}