This is from Introduction to programming in visual basic 10th edition pg#335 problem #39. No issue with settin gup the problem but I am haveing trouble writing out the correct procedure for the button. Can you show me how to write this?

39. State Flowers Write a program using the file StatesBFNC.txt that displays the state flovw ers in a list box and the number of different state flowers. Each flower should appear once in the list box and the flowers should be ordered by the lengths of their names. See Fig. 7.36 Flowers Display the Different State Flowers Capitals Rose Iris Peony Yucca Violet Syringa Dogwood Camellia A Number of Find the States Whose Capital City Begins with the Same Letter as the State different state flowers Dover, Delaware Honolulu, Hawaii Indianapolis, Indiana Oklahoma City, Oklahoma 45 FIGURE 7.36 Outcome of Exercise 39 FIGURE 7.37 Outcome of Exercise 40