Comments by Pareek Rahul (Top 1 by date)

I think, I could not post my requirement properly.

I'll rephrase the requirement:

We are using ASP.NET application.We have a list box which contain some values e.g. let say there are 10 values A,B,C,D,E,F,G,H,I,J in the list box.

Using mouse and control key we can select any values sequentially (let say we need to select all the values from A to F) or randomly, let say we want to select only A, D, E, I. It is very much possible by combination of mouse and keyboard, but we want to achieve the same functionality using only keyboard (to help physically impaired users). It means when we want to select values sequentially we should be able to do it by combination of (Control+Shift+ Up/Down arrow key) and random values can be selected by (Control+ Up/Down arrow key + Spacebar).

As we are using Javascript and jQuery, any solution provided using these two will be helpful for me.

Thank in advance.