Hi satish,
Regarding on the app features you mentioned, do you have some basic ideas about how you'd like to implement them?
Personally, here are something I can get based on your description:
* You can use ListView to display all the menu items
* Let user tap/select an item to view detailes and choose to add into his order list
* For the order list data, it can include the table id (and some other identities) and the list of selected food items.
* You can use HTML5 localStorage or built-in windows store localsettings storage to store the order list (and items) as a custom JSON object
Maybe you can start working out a draft design of all features and the basic workflow. Then, you can focus on them one by one.
Please remember to mark the replies as answers if they help and unmark them if they provide no help.