i am using mvc4, In my project,, i want to add cart so that when anyone click on buy item, that page direct redirect to cart with item price , item name ... please refer me any logic....... also i have set two views,, i want when i click on view one, means on computer product, next page should open only laptops regarding to that selected product.. i have used product primary key as 1.. computers 2..LED 3..Mobiles 4..cosmatics.... and i have used this primary key as foreign key like laptop primarykey 1 , foregin key Productid=1, mobile primary key 2, foregin key productID=3 .... please tell me how to set querystring so that when i click on led , only led should be displayed...... plzzzzz urgent help me...........