C#:
Interpolating a string

How to:

In C#, string interpolation is denoted by a dollar sign ($) followed by a string literal. The variable names or expressions are enclosed within curly braces ({}).

string name = "Jane";
int age = 28;
string interpolatedString = $"Hello, {name}! You are {age} years old.";
Console.WriteLine(interpolatedString);
// Output: Hello, Jane! You are 28 years old.

In a more complex example, you can perform operations or call methods within the curly braces:

double price = 19.99;
int quantity = 3;
string orderDetail = $"Total price: {price * quantity:C2}";
Console.WriteLine(orderDetail);
// Output: Total price: $59.97

The :C2 format specifier inside the curly braces formats the number as a currency with two decimal places.

For scenarios requiring more advanced formatting or localization, you might consider using the string.Format method or libraries like Humanizer. Humanizer can manipulate and display strings, dates, times, timespans, numbers, and quantities in a more human-readable format. Below is an example of using Humanizer for complex string manipulation. Note that Humanizer is not part of the .NET standard library and requires installing the NuGet package Humanizer.

First, install Humanizer via NuGet:

Install-Package Humanizer

Then, you can use it as follows:

using Humanizer;

int dayDifference = 5;
string humanized = $"The event was {dayDifference} days ago.".Humanize();
Console.WriteLine(humanized);
// Depending on the configuration and culture, a possible output: The event was 5 days ago.

This example demonstrates basic usage. Humanizer supports a broad range of functionalities that can be applied to strings, dates, numbers, and more, making your applications more accessible and intuitive.