private List<FundraisingMenuResult> ExpandByPackage(List<FundraisingMenuResult> list)
{
// Map the input list to a list of lists, each of which
// contains a single association between a FundraisingMenuResult
// and a singleton ProjectPackageDto list. Once the mapping is done,
// we flatten the nested list back into a single list. The result
// of this operation is a single list of FundraisingMenuResults
// that has been expanded to include extra entries, with one
// entry per project-package relationship.
return list.Select(delegate(FundraisingMenuResult i)
{
return i.ProjectPackage.Select(delegate(ProjectPackageDto p)
{
FundraisingMenuResult result = new FundraisingMenuResult(i);
result.ProjectPackage = new List<ProjectPackageDto>() { p };
return result;
});
}).SelectMany(i => i).ToList();
}
