Question

I have an array list called str, i want to see the elements inside that array list, how should I use a messagebox to display that?

p.s. displaying the first field of the element is also fine

example code(a method I created to retrieve data from api:

void downloader_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                Stream responseStream = e.Result;
                StreamReader responseReader = new StreamReader(responseStream);
                string response = responseReader.ReadToEnd();

                string[] split1 = Regex.Split(response, "},{");
                List<string> pri1 = new List<string>(split1);
                pri1.RemoveAt(0);
                string last = pri1[pri1.Count() - 1];
                pri1.Remove(last);

                str = pri1;
            }
        }

Answer 1

To show comma delimited values:

var list = new List<string> { "tes1", "test2", "test3" };

var message = string.Join(",", list);
MessageBox.Show(message);

[Update]

A few enhancements you could make in your code:

private void button1_Click(object sender, RoutedEventArgs e)
{
    var response = "asdf},{asaaa},{shf";
    var split = Regex.Split(response, "},{");

    var elements = split
        .Skip(1)
        .Take(split.Length - 2)
        .ToList();

    var message = string.Join(",", elements);
    MessageBox.Show(message);
}