Difference between http call and webservice

HTTP call is a pure HTTP Request/Reponse using GET and POST. 

Webservice can be implemented via HTTP/JMS/MQ 

As far as the transport protocol is concerned, HTTP is pretty similar to both XML and Web Service. In case of a general HTTP call, XML message is transported over HTTP protocol, and SOAP message is transported over HTTP protocol in case of a web service. 

But, the kind of message that's being transported over this HTTP protocol really matters. XML differs a lot from a SOAP Message. While XML is specific to one transaction and to one particular system, a SOAP Message can be made generic to multiple systems. 

Weeks of dates range

private string GetWeeks(DateTime date1, DateTime date2)

        {

            string weeks = string.Empty;

            DateTime date = date1;

            int weekNumber = 1;

            while (date <= date2)

            {

                weeks += "Week " + weekNumber.ToString() + "- (Start Date): ";

                weeks += date.ToShortDateString() + " to (End Date) ";

                date = date.AddDays(6);

                if (date > date2)

                    date= date2;

                weeks += date.ToShortDateString();

                date = date.AddDays(1);

                weeks += Environment.NewLine;

                weekNumber++;

            }

            return weeks;

           

        }