Add N items to a Numericupdown-based Textbox

Question

I created a program that generates passwords, but only generates one at a time.

What I wanted was to be able to provide NumericUpDown so that the user could choose how many passwords or, which would then be presented in a Textbox.

How can I do that?

The code to my button is this:

Answer 1

You can do it as follows:

// No clique de um botão, ou num outro evento que queira
private void button1_Click(object sender, System.EventArgs e)
{
    // Remove as passwords que existirem na ListBox (caso as deseja manter remova a linha seguinte.
    listBox1.Items.Clear();

    // Loop ate ao numero seleccionado no numericupdown 
    for (int i = 0; i < numericUpDown1.Value; ++i)
    {
        // A cada iteraccao gere uma password nova
        var password = //seu código de gerar passwords;

        // Por fim adicione a nova password a ListBox.
        listBox1.Items.Add(password);
    }
}

The final result will be (using GUIDs as passwords):

Edit:

Taking into account your specific case:

if(...)
{
}
else
{
    CopyButton.Enabled = true;
    SaveButton.Enabled = true;

    // Modifique aqui para o seguinte codigo
    listBox1.Items.Clear();

    // Loop ate ao numero seleccionado no numericupdown 
    for (int i = 0; i < numericUpDown1.Value; ++i)
    {
        // A cada iteraccao gere uma password nova
        var password = Generator.GetRandomPassword(Convert.ToInt32(PasswordLengthList.Value), GetStringTemplate());

        // Por fim adicione a nova password a ListBox.
        listBox1.Items.Add(password);
    }
}

The way you currently have it printing the generated password for a textbox. You have to add a listbox and use the code above.