How can i add different exercises to my workout classes c# forms

Question

I'm doing a c# forms app for gym workout administration. I have 2 classes: workout and clients.

Clients can have different workouts and workouts can have different exercises, my doubt is how I can add different exercises to my workout classes, because I can have a workout with 5 exercises or with 1, it's a value that is always changing because each client has different needs.

private void button3_Click(object sender, EventArgs e)
{
    ex_geral.add_ex(textBox_ex.Text);
    lista_exer.Add(ex_geral);
    
    foreach (exercisios_gerais ex in lista_exer)
    {
        listBox_ex.Items.Add(ex.devolve_ex());
    }
}

Now I just need to add an exercise to a workout, but I can't have a number of exercises set, because it's a value that is always changing depending on the client needs.

Answer 1

Use a lista_exer to store the data entered from the textbox.

Then traverse lista_exer and pass the traversed data into listBox .

Code show as below:

namespace WinFormsApp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            List<string> lista_exer = new List<string>();
            lista_exer.Add(textBox_ex.Text.ToString());
            foreach (string ex in lista_exer)
            {
                listBox_ex.Items.Add(ex);
            }
        }
    }
}

Output: