Formato Básico de Cadenas

We can output text and a variable value using an already known method (the + operator):

main


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using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			int number = 10;
			Console.WriteLine("The value is: " + number);
        }
    }
}

However there are better and more suitable methods for string formatting which can also handle complex cases. The first method is by using the placeholder syntax. To understand this syntax we will use the Console.WriteLine method:

main


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using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			int val1 = 10;
			int val2 = 20;
			int val3 = 30;
			Console.WriteLine("The values are: {0}, {1} and {2}", val1, val2, val3);
        }
    }
}

In the above code we insert placeholders in the string where values are to be inserted. The syntax of a placeholder is a number (index) enclosed in curly brackets {index} and the value index starts from 0. When the output string is generated, the placeholders are filled with the corresponding values that are passed as additional arguments to the Console.WriteLine method.

Hay otro método mucho más simple para formatear cadenas. Podemos usar el carácter para indicar que una cadena es una cadena formateada e insertar directamente valores dentro de ella usando las llaves ({}`):

Usando esta sintaxis, también podemos generar y almacenar cadenas formateadas en variables de cadena:

Using this syntax, we can also generate and store formatted strings into string variables:

main


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using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
			int val1 = 10;
			int val2 = 20;
			int val3 = 30;
			string text = $"The values are: {val1}, {val2} and {val3}";
			Console.WriteLine(text);
        }
    }
}

¿Todo estuvo claro?

¡Gracias por tus comentarios!

Sección 2. Capítulo 8