Question

Is it possible to using ‘paging’ functionality in Linq queries? Let’s say I have some XML like this:

<Root>     <BetaSection>         <Choices>             <SetA>                 <Choice id='choice1'>Choice One</Choice>                  <Choice id='choice2'>Choice Two</Choice>                 <Choice id='choice3'>Choice Three</Choice>                 .                 .                 .                 <Choice id='choice48'>Choice Forty-Eight</Choice>                 <Choice id='choice49'>Choice Forty-Nine</Choice>                 <Choice id='choice50'>Choice Fifty</Choice>             </SetA>         </Choices>     </BetaSection> </Root> 

If I wanted to implement paging functionality, would I be able to provide an offset to a LINQ query such that I could start at the 11th element and end on the 20th element? If so, would the query be any different if the data was a list of objects instead of XML?

Answer 1

var q = from X in Choices.Skip((page-1)*pageSize).Take(pageSize)         select X; 

Now, if you need a where clause in it, it gets a bit trickier:

var q = (from X in Choices          where x.SomeField == SomeValue          select X).Skip((page-1)*pageSize).Take(pageSize);