Boolean.ToString() Method in C#

The Boolean.ToString() method in C# converts a boolean value to its equivalent string representation. It returns "True" for true values and "False" for false values.

Syntax

Following is the syntax −

public override string ToString();

Return Value

The method returns a string that represents the current boolean value −

• Returns "True" if the boolean value is true

• Returns "False" if the boolean value is false

Using Boolean.ToString() with True Value

Example

using System;

public class Demo {
    public static void Main() {
        bool b = true;
        string res = b.ToString();
        Console.WriteLine("Boolean value: " + b);
        Console.WriteLine("String representation: " + res);
        Console.WriteLine("Type: " + res.GetType().Name);
    }
}

The output of the above code is −

Boolean value: True
String representation: True
Type: String

Using Boolean.ToString() with False Value

Example

using System;

public class Demo {
    public static void Main() {
        bool b = false;
        string res = b.ToString();
        Console.WriteLine("Boolean value: " + b);
        Console.WriteLine("String representation: " + res);
        Console.WriteLine("Are they equal as strings? " + (res == "False"));
    }
}

The output of the above code is −

Boolean value: False
String representation: False
Are they equal as strings? True

Practical Example with Multiple Boolean Values

Example

using System;

public class Demo {
    public static void Main() {
        bool[] booleans = { true, false, 5 > 3, 10 < 2 };
        
        Console.WriteLine("Boolean to String Conversions:");
        for (int i = 0; i < booleans.Length; i++) {
            Console.WriteLine($"Value {i + 1}: {booleans[i]} -> "{booleans[i].ToString()}"");
        }
        
        // Demonstrate case sensitivity
        bool check = true;
        Console.WriteLine("\nCase sensitivity check:");
        Console.WriteLine("ToString() result: " + check.ToString());
        Console.WriteLine("Equals 'true': " + (check.ToString() == "true"));
        Console.WriteLine("Equals 'True': " + (check.ToString() == "True"));
    }
}

The output of the above code is −

Boolean to String Conversions:
Value 1: True -> "True"
Value 2: False -> "False"
Value 3: True -> "True"
Value 4: False -> "False"

Case sensitivity check:
ToString() result: True
Equals 'true': False
Equals 'True': True

Key Points

• The ToString() method returns capitalized strings: "True" and "False" (not "true" or "false")

• The method is inherited from the Object class and overridden in the Boolean struct

• It's commonly used for displaying boolean values in user interfaces or logging

• The returned string can be used in string comparisons but remember the exact casing

Conclusion

The Boolean.ToString() method provides a simple way to convert boolean values to their string representations. It returns "True" for true values and "False" for false values, with proper capitalization that should be considered when performing string comparisons.