You can easily format an integer to an octal string in C# using the Convert.ToString method.

Below is a sample sourcecode that demonstrates How to convert an Integer to Octal string in C# ?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
    static class Program
        static void Main()

        static void FormatString()
            int intVal = 9;

            string formattedString = Convert.ToString(intVal, 8);


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