Tag: ASP.NET

One of the thing that sometimes annoys is Lambda Expression with IEqualityComparer. I was trying to pick items with Except Comparer from the list. After doing quick search on google found the below extension method which can be used in such scenario. 

public static IEnumerable Except(this IEnumerable first, IEnumerable second, Func<TSource, TSource, bool> comparer)
{
return first.Where(x => second.Count(y => comparer(x, y)) == 0);
}

How to use:

List myItemsList = source.Except(myDeals, (x, y) => x.ID == y.ID).Take(requiredCount).ToList();

This will return the list of items except item(s) which match with an ID in myDeals. 

There was already code written to do the processing once we get the response object from web-service.But when we get the object via web-service, it append the Web Service Reference Name because of which we were not able to utilize the already written code for processing that object. We believe in Re-usability as much as possible and wanted to re-utilize that code which was also used by other functions. Web-Service was returning lot of data which includes list and list of object inside the list etc.