How to find the length of the StringBuilder in C#

StringBuilder.Length Property is used to get or set the length of the current StringBuilder object.

Syntax: public int Length { get; set; }
It returns the length of the current instance.

Exception: This property will give ArgumentOutOfRangeException if the value specified for a set operation is less than zero or greater than MaxCapacity.

Below programs illustrate the use of the above-discussed property:

Example 1:

// C# program to demonstrate
// the Length() Property
using System;
using System.Text;

class GFG {

    // Main Method
    public static void Main(String[] args)
    {

        // create a StringBuilder object
        // with a String passed as parameter
        StringBuilder str = new StringBuilder("WelcomeGeeks");

        // print string
        Console.WriteLine("String = "
                   + str.ToString());

        // get length of StringBuilder object
        int length = str.Length;

        // print length
        Console.WriteLine("length of String = "
                                     + length);
    }
}

Output:

String = WelcomeGeeks
length of String = 12

Example 2:

// C# program to demonstrate
// the Length() Property
using System;
using System.Text;

class GFG {
    public static void Main(String[] args)
    {

        // create a StringBuilder object
        // with a String passed as parameter
        StringBuilder str = new StringBuilder("India is Great");

        // print string
        Console.WriteLine("String = "
                   + str.ToString());

        // get length of StringBuilder object
        int length = str.Length;

        // print length
        Console.WriteLine("length of String = "
                                     + length);
    }
}

Output:

String = India is Great
length of String = 14

Reference:

• https://docs.microsoft.com/en-us/dotnet/api/system.text.stringbuilder.length?view=netframework-4.7.2