C# Quiz 5

Create a Windows Forms application using Visual Studio 2010 via New -> Project -> C# Windows Forms Application. Give it the name Quiz5.

Create the following on your main form:

• A TextBox called txtItemToAdd.
• A Button called btnAdd with text "Add Item" on it.
• A ListBox called lbItems with MultiSimple selection mode.
• A Button called btnDelete with text "Delete Item(s)" on it.

Do the following with what you’ve created:

• Create an Event Handler for the btnAdd clicked event that does the following:
  • Takes the text value from txtItemToAdd and Validates it using the ValidateItem method.
  • If validated add the text value as a new item in the lbItems list Items collection.
• Create an Event Handler for the btnDelete clicked event that does the following:
  • Goes through every item in the lbItems ListBox and removes it if it is selected.
• Create a ValidateItem() method that does the following:
  • Takes a string parameter and returns a Boolean.
  • Ensures the string parameter is not an empty string or return false.
  • Goes through the lbItems, Items collection and makes sure that the string parameter does not match any of the string items there already, return false if it does.
  • Otherwise, return true.