In this exercise, you modify the Numbers application from Exercise 6. Use Windows to make a copy of the Numbers Solution folder. Rename the copy Modified Numbers Solution. Open the Numbers Solution.sln file contained in the Modified Numbers Solution folder.
a. Open the Code Editor window. Modify the btnForNext_Click procedure to display only the even numbers within the range specified by the user. Save the solution and then start and test the procedure. (If the From and To boxes contain 1 and 9, respectively, the procedure should display the numbers 2, 4, 6, and 8.) 

b. Now, modify the btnDoPretest_Click procedure to display only the odd numbers within the range specified by the user. Save the solution and then start and test the procedure.