need help in C# Visual Studio

This program will estimate the cost of hard wood floors for up to three rooms. For each room there will be a textbox for the length of the room and another for the width of the room. For each room there will also be a check box to indicate if the customer wishes us to install the flooring and another checkbox to indicate if the customer wants us to sand and stain (i.e. finish) the flooring. There will also be a label to indicate the cost of each room.

The cost of each room will be displayed separately in a label. The costs will be calculated based upon $5.00 per square foot of flooring (materials only), plus $1.50 per square foot of flooring for installation (if ordered), plus $2.00 per square foot of flooring for finishing (if requested).

The button that calculates the costs will call a method that calculates the cost of each room. This subroutine will be called three times, so that the programmer must pass parameters to make it work. Use a Try-Catch block or tryParse functions to prevent errors for missing or invalid input data. The grand total for the three rooms should be displayed in a label near the bottom of the form.

There should be tool tips for the textboxes to indicate that the measurements should be in feet.

The form title should be Flooring Cost Estimate followed by the date the program is run. You will need to use the built-in function DateTime.Now to get the current date. This should be used in a form-load event procedure which will assign a value to the text property of the form.

please post design and designer code thank you