The Program in C# Sharp program that takes a decimal number as input and displays its equivalent in binary form is given below:

using System;

namespace DecimalToBinary
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Hello Codeauri  Family ,enter a decimal number to convert them into binary form: ");
            int decimalNumber = int.Parse(Console.ReadLine());

            string binary = Convert.ToString(decimalNumber, 2);

            Console.WriteLine("Okay, the Binary equivalent is : " + binary);
            Console.ReadLine();
        }
    }
}

Output:

Hello Codeauri Family ,enter a decimal number to convert them into binary form: [?1h=[6n[6n10
Okay, the Binary equivalent is : 1010

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Here are the step by step execution of above program:

1. The using System; directive at the top of the code is a using directive that includes the System namespace in the program. This namespace includes the Console class, which provides methods for reading from and writing to the console.
2. The next line defines the namespace for the program. A namespace is a container for classes and other code elements in C#, and it helps to organize and structure the code. In this case, the namespace is called DecimalToBinary.
3. Inside the namespace, a class called Program is defined. This class contains the main logic of the program.
4. The Main method is the entry point of the program. This method is executed when the program starts.
5. Within the Main method, the Console.Write method is called to display a message on the console asking the user to enter a decimal number.
6. The Console.ReadLine method is then used to read the user’s input, which is stored in the decimalNumber variable as a string. The int.Parse method is used to convert the string to an integer.
7. The Convert.ToString method is then called with the decimalNumber and the base 2 (binary) as arguments, to convert the decimal number to its binary equivalent. The binary equivalent is stored in the binary string variable.
8. The binary equivalent is then displayed on the console using the Console.WriteLine method, along with a message.
9. Finally, the Console.ReadLine method is called to prevent the console from closing immediately after the program runs.