Problem with showing strings on textbox on forms, showing one at a time (async wait) C#

I got stuck on a problem for so long and I really need your help!
So my project is using Twitter API and my goal is to show specific tweets on win forms.
after using the API I’m getting an Array and each object inside the array contain a text section with the string that represents the tweet as you can see here:
enter image description here

So I wrote :
textBox2.Text = tweets5[0].Text;
and each time the textbox shows one tweet at a time and I want it to show
all of them together on that textbox.

I tried to use for but the signature of the method is :
enter image description here

I tried to print the length, tried foreach, tried while and
nothing seems to work…

Thanks a lot for your time!

>Solution :

There are many ways you can accomplish this. I’ll suggest one:

You could loop through your array and append the text each time to a StringBuilder.

StringBuilder AllText = new StringBuilder(tweets5[0].Text + Environment.NewLine);

for (int i = 1; i < tweets5.Count; i++)
{
    AllText.Append(tweets5[i].Text + Environment.NewLine);
}

TextBox.Text = AllText.ToString();