C# program to write multiple (all) lines into a text file

Program

using System;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main()
        {
         
            string[] line={
                            "Sample Line 1",
                            "Sample Line 2",
                            "Sample Line 3",
                            "Sample Line 4",
                            "Sample Line 5"
                          };

            File.WriteAllLines("sample.txt", line);

            Console.WriteLine("Data written successfully");
        }
    }
}

Output

Data written successfully

Note: In above program, we need to remember, when we use "File" class, System.IO namespace must be included in the program.