Conditional Statements

C# in Visual Studio 2026 — a hands-on guide for developers at every level.

if / else if / else

int score = 73;

if (score >= 90)
    Console.WriteLine("Grade: A");
else if (score >= 80)
    Console.WriteLine("Grade: B");
else if (score >= 70)
    Console.WriteLine("Grade: C");
else
    Console.WriteLine("Grade: F");

Ternary Operator

int age = 20;
string status = age >= 18 ? "Adult" : "Minor";
Console.WriteLine(status);  // Adult

switch Statement

int day = 3;
switch (day)
{
    case 1: Console.WriteLine("Monday");    break;
    case 2: Console.WriteLine("Tuesday");   break;
    case 3: Console.WriteLine("Wednesday"); break;
    default: Console.WriteLine("Other");   break;
}

switch Expression (C# 8+)

The switch expression is a concise alternative that returns a value:

string dayName = day switch
{
    1 => "Monday",
    2 => "Tuesday",
    3 => "Wednesday",
    4 => "Thursday",
    5 => "Friday",
    _ => "Weekend"
};
Console.WriteLine(dayName);

Pattern Matching

object obj = "Hello";

if (obj is string s && s.Length > 3)
    Console.WriteLine($"Long string: {s}");