C# | Padding an integer number with leading and trailing spaces/zeros

In this tutorial, we will learn how to pad an integer number with leading and trailing spaces/zeros in C#? By IncludeHelp Last updated : April 09, 2023

Padding an integer number with leading and trailing spaces/zeros

To pad an integer number with leading and trailing spaces/zeros, we use String.Format() method which is library method of String class in C#. It converts the given value based on the specified format.

Consider the below statement for padding with leading and trailing spaces/zeros,

String.Format("{0,6:00000}", number)
// Here, 6 is the number of digits

C# code for padding an integer number with leading and trailing spaces/zeros

using System;

namespace ConsoleApplication1 {
  class Program {
    static void Main(string[] args) {
      Console.WriteLine("Demo for left or right alignment of an integer number:");

      Console.WriteLine(String.Format("{0,6}", 256));
      Console.WriteLine(String.Format("{0,-6}", 256));
      Console.WriteLine(String.Format("{0,6:00000}", 256));
      Console.WriteLine(String.Format("{0,-6:00000}", 256));

      Console.WriteLine();
    }
  }
}

Output

Demo for left or right alignment of an integer number:
   256
256
 00256
00256

Explanation

In the above program, 6 is used for right alignment, here space is padded at the left side. And in the case of -6, it is reverse. And we also padded zeros.




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