enhanced home utility auditing program

Design, implement, test and debug a Visual Basic program to create    an enhanced home utility auditing program based on Week 3
   
    The user should be able to do the following:
     Enter the cost per kilowatt-hour
     Select from a list of home appliances which includes a washer, among other appliances
     Enter the power needed in kilowatts (kW) for the selected appliance
     Enter the number of hours used per day for the selected appliance
     If the washer is selected, enter both the number of gallons of water used by
      the washer per hour and the cost per gallon
     Export the data in the listing area to an external text file
     Change default power ratings of a selected appliance
   
    The program should do the following:
     Validate that the data entered has the correct format and
      is within a reasonable range
     Calculate and display the cost for operating a home appliance as soon
      as the data is entered
     Create a listing area to display each of the following for each appliance entered
     Home appliance
     Number of hours per day
     Cost
     Display and update the total cost of all appliances as soon as a new entry is
      added to the listing area
     Use arrays or structures where applicable
     Read the default power rating for appliances from an external text f
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