Check if Caps Lock and Num Lock is on or off through Console in C#

The C# Console class provides built-in properties to check the status of the Caps Lock and Num Lock keys. The Console.CapsLock and Console.NumberLock properties return a boolean value indicating whether these keys are currently active.

Syntax

Following is the syntax to check Caps Lock status −

bool capsLockStatus = Console.CapsLock;

Following is the syntax to check Num Lock status −

bool numLockStatus = Console.NumberLock;

Return Value

• Console.CapsLock returns true if Caps Lock is on, false otherwise.

• Console.NumberLock returns true if Num Lock is on, false otherwise.

Checking Caps Lock Status

Example

using System;

public class Demo {
    public static void Main(string[] args) {
        Console.WriteLine("The CAPS LOCK is on or not? " + Console.CapsLock);
    }
}

The output of the above code is −

The CAPS LOCK is on or not? False

Checking Num Lock Status

Example

using System;

public class Demo {
    public static void Main(string[] args) {
        Console.WriteLine("The Num LOCK is on or not? " + Console.NumberLock);
    }
}

The output of the above code is −

The Num LOCK is on or not? True

Checking Both Keys Together

Example

using System;

public class Demo {
    public static void Main(string[] args) {
        bool capsLock = Console.CapsLock;
        bool numLock = Console.NumberLock;
        
        Console.WriteLine("Caps Lock Status: " + (capsLock ? "ON" : "OFF"));
        Console.WriteLine("Num Lock Status: " + (numLock ? "ON" : "OFF"));
        
        if (capsLock && numLock) {
            Console.WriteLine("Both keys are active");
        } else if (!capsLock && !numLock) {
            Console.WriteLine("Both keys are inactive");
        } else {
            Console.WriteLine("Keys have different states");
        }
    }
}

The output of the above code is −

Caps Lock Status: OFF
Num Lock Status: ON
Keys have different states

Key Features

Conclusion

The Console.CapsLock and Console.NumberLock properties provide a simple way to check the current state of these toggle keys in C# console applications. These properties return boolean values that can be used for conditional logic or user feedback in your programs.