(Delphi) How to read a string variable and split it into multiple lines and put into a listbox

If you have a list box at hand, and the database hands you a string with line breaks embedded, then you can simply do this.

ListBox.Items.Text := QueryString;

When you assign to the Text property of Items, the string will be parsed by splitting on line breaks. Each line is added to the list box as a separate item.

If your string is using a different delimiter, then you can use DelimitedText and Delimiter instead.