C# visual studio

Create a Windows application for purchasing floor covering. Allow the length and width (feet and inches) of a room to be entered. Be sure to include program statements that will keep your program from crashing if they enter non-numeric characters for the room dimensions. Using the tab control, provide selections such as Hardwood, Carpet, and Laminate. On each tab allow the user to select a type and price. Have a control that displays different types along with the prices of floor covering. Include, for example, options like Oak, Maple, Walnut, and Cherry Hardwood floors with prices such as $34.95 per square yard for Oak and $41.95 per square yard for Cherry. After the users enter their room dimensions and select the floor covering and price, display the total cost to cover the room. Include an option to clear selections. Place both the type of floor covering and the price in a single control, such as a ComboBox, and use string manipulation techniques to strip the price out of the string.

Please go step by when creating the form. I AM NEW AT THIS I AM SO LOST.