TextBox2.Text | Transfer Text to ListBox

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Hello, I'm having a small problem developing my program. I would like to be able to transfer the text from TextBox2, and make a new collection item in ListBox1.

Example:
I type "Hello" in TextBox2.
I click a button.
"Hello" is a new item in the ListBox.

Hope I could make it easy to understand, I'm just waking up so my grammar probably isn't 100%.

Thanks to anybody that helps!