Code should be written in C#

Replace the 2 ListBox with 2 COMBOX

Should include an ERRORPROVIDER

Workshop Selector ws a training company's workshops, the number of days of Number of Days Registration Fee The following table shows each, and their registration fees. Workshop Handling Stress Time Management Supervision Skills Negotiation How to Interview company's $1,000 $800 $1,500 $1,300 $500 company conducts its workshops in the six locations shown in the fol- The table also shows the lodging fees per day at each location The training company cond lowing table. The tab Location Austin Chicago Dallas Orlando Phoenix Raleigh Lodging Fees per Day $150 $225 $300 $175 $150 a customer registers for a workshop, he or she must pay the registration fee plu s the lodging fees for the selected location. For example, here are the charges to the Supervision Skills workshop in Orlando: Registration: $1,500 Lodging: $300 3 days = $900 Total: $2,400 Create an application that lets the user select a workshop from one ListBox and a location from another ListBox. When the user clicks a button, the application should calculate and display the registration cost, the lodging cost, and the total cost