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Business Days in c# (a very fast way)

Hi, Today I needed a simple code that returns the business days between two dates and ended with this: public static int GetFullWorkingDaysBetween(DateTime firstDate, DateTime lastDate, IEnumerable holidays) { if (firstDate > lastDate)// Swap the dates if firstDate > lastDate { DateTime tempDate = firstDate; firstDate = lastDate; lastDate = tempDate; } int days = (int)(lastDate.Subtract(firstDate).Ticks / TimeSpan.TicksPerDay); int weekReminder = days % 7; if (weekReminder > 0) { switch (firstDate.DayOfWeek) { case DayOfWeek.Monday: days = days - ((weekReminder > 5) ? 1 : 0); // Another way for this: //days = days - ((int)weekReminder % 5); // but i think its more expensive ...
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Use fastJSON with WCF (C#)

To use fastJson Serializer with WCF Web Service: Within a Web Site or App Project (VS), Add AjaxService Add: Method: Get, Use: Only to retrieve Data [ OperationContract ] [ WebGet (ResponseFormat = WebMessageFormat .Json)] public Stream TestStream( string ticker) { WebOperationContext .Current.OutgoingResponse.ContentType = "application/json" ; string jsonString= "{\"d\":{}}" ;//Here you do the serialization MemoryStream ms = new MemoryStream ( ASCIIEncoding .Default.GetBytes(jsonString)); return ms; } Method: Post, Use: Insert data / data manipulation [ OperationContract ] [ WebInvoke (Method= "POST" , ResponseFormat = WebMessageFormat .Json)] public Stream TestStream( string ticker) { WebOperationContext .Current.OutgoingResponse.ContentType = "application/json" ; string jsonString= "{\"d\":{}}" ;//Here you do the serialization MemoryStream ms = new MemoryStream ( ASCIIEncoding .Def...
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Wpf, TreeView and Mvvm: Conceptual Findings (Part 1)

I have read a lot of articles, comments and how To's (see below for a brief list of links) about the use of MVVM with TreeView (WPF & C#), but none of them convince me for the proof of concept that i have in mind. Why? Because i think that the Drag & Drop operation is, only, a View Operation. As i understand the MVVM is like:  Model: Data and data extract/insert operations ViewModel: Commands, Main Logic and so on... View: User Experience After defining the concepts, i want to note something: the view can be a console application, a web page, a window application or a touch application. I'm not sure that if the view is a console app, there must be commands to handle the drag and drop operations like Sparky at al mentioned (we can have an interface defining the ViewModel and a lot of pairs classes (View & ViewModel), but then, where is the re usability of the code?) Let me be clear about something, the idea of Sparky is very interesting (and c...
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