Easily paginate collections in C#
This post looks at how to easily paginate collections in C#, which can be easily achieved with two very basic extensions.
When paginating a collection in C#, I find the following extensions useful:
public static IEnumerable<TSource> Paginate<TSource>(this IEnumerable<TSource> source, int? page, int pageSize)
{
return source.Skip((page ?? 0) * pageSize).Take(pageSize);
}
public static IQueryable<TSource> Paginate<TSource>(this IQueryable<TSource> source, int? page, int pageSize)
{
return source.Skip((page ?? 0) * pageSize).Take(pageSize);
}
By adding them to an extension class within a certain namespace, all IQueryable
and IEnumerable instances will automatically receives this functionality:
List<string> strings = new List<string> { "a","b","c","d","e","f" };
strings.Paginate(2, 2);
The pagination code above will return a list that contains “c” and “d”.
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