CSHARP

c# arrow

// Make a new lambda function
Func<string, string> greet = (name) => $"Hello, {name}!";

// Call it
Console.WriteLine(greet("John"));

C# and Arrow Keys

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
    bool shiftPressed = (keyData & Keys.Shift) != 0;
    Keys unmodifiedKey = (keyData & Keys.KeyCode);

    // rest of code goes here
}