How do I put that code into streamwriter and streamreader

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How do I put that code into streamwriter and streamreader. I have tried several techniques but didnt work.

here is what i want to achieve:
id;
1
name:
jones
salary:
1200

id:
2
name:
gale
salary:
1300

id:
3
name:
bel
salary:
1800

but first i have to record it in a file rekisteri.txt. Then streamwrite it and finally streamread it.

What I have tried:

using System IO;

namespace ConsoleApp1
{
    class Ohjelma
    {
        public static void Main(string[] args)
        {
            string data = "E:\\visual studio 2017\\ConsoleApp1\\rekisteri.txt";

            FileStream fOutStream = File.Open(data, FileMode.Append, FileAccess.Write);

            StreamWriter sWriter = new StreamWriter(fOutStream);

            int id;
            string name;
            float salary;

            label:

            Console.WriteLine("Give id: ");
            id = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Give name: ");
            name = Convert.ToString(Console.ReadLine());

            Console.WriteLine("Give salary: ");
            salary = float.Parse(Console.ReadLine());

            
            if (id <= 3)
            {
                goto label;
            }
            else
            {
                Console.WriteLine();
            }
            Console.ReadLine();


            /*StreamReader code here*/
            
        }
    }
  
}

Posted 26-Feb-20 3:23am

bangashizsc

Updated 26-Feb-20 4:23am

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Richard MacCutchan · Answer 1 · 2020-02-26T04:23:00

You are only writing the data to the console, you also need to write it to your sWriter stream. When there is no more data you need to close the stream. To read it back you just use a StreamReader.

See StreamWriter Class (System.IO) | Microsoft Docs[^] and StreamReader Class (System.IO) | Microsoft Docs[^].

OriginalGriff · Answer 2 · 2020-02-26T04:24:00

For starters, get rid of labels and goto - you should use a loop construct like for or while instead. In fact, forget goto even exists for a couple of years - by then you will understand when it is appropriate, which in almost never in "normal" code.

You also should never use Convert methods on user input - they make mistakes, and it's kinda annoying when your app crashes because of a miskey.

C#

int id;
while (true)
   {
   Console.Write("Enter ID: ");
   if (int.TryParse(Console.ReadLine(), out id))
      {
      break;
      }
   Console.WriteLine($"\"{val}\" is not a valid integer.");
   }

Is a lot more friendly!

Write a method that takes four parameters:

C#

private static void WriteLine(StreamWriter sw, int id, string name, float salary)
   {
   }

And make it write the values to the stream. That way, it's more "organised" and clearer to read. And trivial: StreamWriter has a WriteLine method.

Then reading back is pretty simple too - just loop through the file until it runs out of data, and read each item back. Use the same TryParse code to convert teh values and it's pretty easy.

How do I put that code into streamwriter and streamreader

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