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NP124 overloading Append()

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Maha

Maha

16y
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Hi Guys

 

NP124 overloading Append()

 

When overloading Append() method (highlighted in yellow) why new char[] has been used.

 

Please explain.

 

Thank you

 

using System;

using System.Text;

 

public sealed class App

{

    static void Main()

    {

        // Create a StringBuilder that expects to hold 50 characters.

        // Initialize the StringBuilder with "ABC".

        StringBuilder sb = new StringBuilder("ABC", 50);

 

        // Append three characters (D, E, and F) to the end of the StringBuilder.

        sb.Append(new char[] { 'D', 'E', 'F' });

 

        // Append a format string to the end of the StringBuilder.

        sb.AppendFormat("GHI{0}{1}", 'J', 'k');

 

        // Display the number of characters in the StringBuilder and its string.

        Console.WriteLine("{0} chars: {1}", sb.Length, sb.ToString());

 

        // Insert a string at the beginning of the StringBuilder.

        sb.Insert(0, "Alphabet: ");

 

        // Replace all lowercase k's with uppercase K's.

        sb.Replace('k', 'K');

 

        // Display the number of characters in the StringBuilder and its string.

        Console.WriteLine("{0} chars: {1}", sb.Length, sb.ToString());

    }

}

 

// This code produces the following output.

//

// 11 chars: ABCDEFGHIJk

// 21 chars: Alphabet: ABCDEFGHIJK


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