switch Expression

An expression that selects and returns a value by matching an input against patterns.

What is switch Expression in C#?

switch Expression — An expression that selects and returns a value by matching an input against patterns.

class Shirt
{
    string SizeName(string size)
    {
        return size switch
        {
            "M" => "Medium",
            _ => "Other"
        };
    }
}

Level: Novice · More C# terms at this level

Updated September 27, 2026