[Solved] Read, write, from and to a file using C#

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The problem is that you are declaring your string array inside the loop and never populating it with anything. Move that string array outside the loop instead. Also, I don’t think you want to write the file every time through the loop, so move file write outside the loop too.

static void Main(string[] args)
{
    String Readfiles = File.ReadAllText(@"C:\Users\ken4ward\Desktop\Tidy\WriteLines.txt");
    Int32 myInt = Int32.Parse(Readfiles);

    //Declare array outside the loop
    String[] start = new String[myInt];

    for (int i = 0; i < myInt; ++i)
    {
        //Populate the array with the value (add one so it starts with 1 instead of 0)
        start[i] = (i + 1).ToString();

        Console.WriteLine(i);
        Console.ReadLine();  
    }

    //Write to the file once the array is populated
    File.WriteAllLines(@"C:\Users\ken4ward\Desktop\Tidy\writing.txt", start);
}

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solved Read, write, from and to a file using C#