How to take the path of the subfolder that was "SELECTED " in the listbox by the user and save the file inside

Question

The program I’m creating should take the following steps:

1. First the user creates a subfolder to go saving the projects that were calculated by the program, as image and code below.

2. When the user creates a subfolder, for example "Em01_project of a block 4", it is created within a predefined directory (c: Vandro Tad "Em01_project of a block 4")

3. How do I save a file where the name already fixed in the code written in C# "Loads.txt" where when the user clicks on the "Save" button, as shown below, and this command recognizes the path of the subfolder opened or created through the textBox_NomeBloco.Text by the end user as explained in item 2?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Tad_Bloco1._0
{
     public partial class NovoBloco : Form
     {
        string[] listapasta = Directory.GetDirectories(@"c:\evandro\tad");        

    public NovoBloco()
    {
        InitializeComponent();
    }

    private void NovoBloco_Load(object sender, EventArgs e)
    {

        foreach (string p in listapasta)
            listBox_ListaBlocos.Items.Add(Path.GetFileName(p));

    }

    private void button_Ok_Click(object sender, EventArgs e)
    {          
        string pasta = @"c:\evandro\Tad\" + textBox_NomeBloco.Text;

        if (Directory.Exists(pasta) == false)
        {
            Directory.CreateDirectory(pasta);
            listBox_ListaBlocos.Items.Add(Path.GetFileName(pasta));
            MessageBox.Show("Pasta criada com sucesso!");
        }
        else
            MessageBox.Show("Esta pasta já existe");
    }

    private void button_Cancelar_Click(object sender, EventArgs e)
    {
        this.Close();
    }

    private void listBox_ListaBlocos_SelectedIndexChanged(object sender, EventArgs e)
    {
        textBox_NomeBloco.Text = listBox_ListaBlocos.Text;
    }
  }
}

Answer 1

I find it difficult for anyone to formulate this here for you, I did not find the question very clear and it was very specific to the point where it really seems that you are asking someone for the ready code... well, I did not understand the question but I will try to highlight a few points....

• You can write a txt with this simple command
• System.IO.File.Writealltext("C: example.txt", "content");

If the question is a button on a secondary Form save a file that is somehow contained in the Primary Form you can try using a Global variable Setting a variable to "public" let’s assume that Form Main should call Form Example by passing it a string... there is more than one way to do this, I’ll try to show you the simplest...

public class Main : Form
{
    public Main(){
        InitializeComponents();
    }
    public void Button1_Click(object o, EventArgs e){
        Exemplo form = new Exemplo();
        form.Caminho = "C:\Exemplo.bin";//aqui é onde a Form Exemplo salvará
        form.Conteudo = "Conteúdo de Exemplo";//aqui é o conteúdo a salvar...
        form.ShowDialog();
    }  

}
public class Exemplo : Form
{
    public string Caminho;
    public string Conteudo;
    public Exemplo(){
        InitalizeComponents();
    }

    public void Salvar_Click(object o, EventArgs e){
        System.IO.File.WriteAllText(Caminho, Conteudo);
    }

}

Well, I ended up giving half a hand but that’s it... I prefer to pass the argument straight to form, but I think this is easier for you