10. Open the VB2015\Chap08\Count Solution\Count Solution (Count Solution.sln) file.

The interface provides a text box for the user to enter a string. The btnSearch_Click procedure should prompt the user to enter the sequence of characters for which he or she wants to search. The procedure should determine the number of times the sequence of characters appears in the string. Use the IndexOf method to search the string for the sequence of characters. Save the solution and then start the application.

Enter the string “The weather is beautiful!” (without the quotes), and then click the Search button. Search for the two characters “ea” (without the quotes). The two characters appear twice in the string. On your own, test the application using other data.