ASP.Net Displaying the data dynamically on the screen

ASP.Net Displaying the data dynamically on the screen

How to display the data on the webpage when it is entered using the form.
Data should get added and appended. Database use is prohibited
e.g
Step 1)I/p Name:Laptop
Color:Black
O/p Laptop, <Black>
Step 2)I/p Name:Car
Color:White
O/p Car, <White>
Laptop, <Black>
Step 3)I/p Name:Laptop
Color:Red
O/p Car, <White>
Laptop, <Black,Red>