Dynamics CRM: How to Add working days by calculating business closure and weekends

Recently I received a requirement to set the Incident Auto Closure date to 'CreatedOn' + 7 working days. To add working days to 'CreatedOn' date, we need to exclude all the weekend and business closures. I came up with the following solution to achieve the required outcome.
Add the following Class to your project to calculate working day and business closures.

using System;
using System.Collections.Generic;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;

namespace HayerCrmPackage.Plugins
{
    public class AddWorkingDaysClass
    {
        /// 

        /// Add working days to a specific date by calculating Business Closure and weekends
        /// 
        public static DateTime AddWorkingAndBusinessClosureDays(DateTime specificDate, int workingDaysToAdd, 
            IOrganizationService service, IPluginExecutionContext context)
        {
            var currentDate = specificDate;
            var businessClosures = GetBusinessClosureCalendarRules(context, service);

            // Calculate the working days by taking out the weekends
            int completeWeeks = workingDaysToAdd / 5;
            DateTime date = specificDate.AddDays(completeWeeks * 7);
            workingDaysToAdd = workingDaysToAdd % 5;
            for (int i = 0; i < workingDaysToAdd; i++)
            {
                date = date.AddDays(1);
                while (!IsWorkingDayOfWeek(date))
                {
                    date = date.AddDays(1);
                }
            }

            // Calculate the working days by taking out Business Closures
            for (var i = currentDate; i <= date; i = i.AddDays(1))
            {
                if (i.DayOfWeek == DayOfWeek.Saturday || i.DayOfWeek == DayOfWeek.Sunday)
                    continue;

                foreach (var closure in businessClosures)
                {
                    var startDate = (DateTime)closure["effectiveintervalstart"];
                    var endDate = (DateTime)closure["effectiveintervalend"];
                    var range = new DateRange(startDate, endDate);

                    if (range.Includes(i))
                    {
                        date = date.AddDays(1);

                        if (date.DayOfWeek == DayOfWeek.Saturday)
                        {
                            date = date.AddDays(2);
                            i = i.AddDays(1);
                        }
                        else if (date.DayOfWeek == DayOfWeek.Sunday)
                        {
                            date = date.AddDays(1);
                        }
                    }
                }
            }
            return date;
        }

        /// 

        /// Get Business Closure Calendar Rules
        /// 
        private static IEnumerable<Entity> GetBusinessClosureCalendarRules(IPluginExecutionContext context,
            IOrganizationService service)
        {
            // Get Organization Business Closure Calendar Id
            var organization = service.Retrieve("organization", context.OrganizationId, new ColumnSet("businessclosurecalendarid"));

            var query = new QueryExpression("calendar")
            {
                ColumnSet = new ColumnSet(true),
                Criteria = new FilterExpression()
            };

            // Add condition to get Get Calander where CalanderId is equal to Organization's businessclosurecalendarid
            query.Criteria.AddCondition(new ConditionExpression("calendarid", ConditionOperator.Equal, organization["businessclosurecalendarid"].ToString()));

            // Get Calendar
            var businessClosureCalendar = service.RetrieveMultiple(query).Entities[0];

            // Return the Calendar rules
            return businessClosureCalendar != null ? businessClosureCalendar.GetAttributeValue<EntityCollection>("calendarrules").Entities : null;
        }

        private static bool IsWorkingDayOfWeek(DateTime date)
        {
            var day = date.DayOfWeek;
            return day != DayOfWeek.Saturday && day != DayOfWeek.Sunday;
        }

        public interface IRange<T>
        {
            T Start { get; }
            T End { get; }
            bool Includes(T value);
        }

        public class DateRange : IRange<DateTime>
        {
            public DateRange(DateTime start, DateTime end)
            {
                Start = start;
                End = end;
            }

            public DateTime Start { get; private set; }
            public DateTime End { get; private set; }

            public bool Includes(DateTime value)
            {
                return (Start <= value) && (value < End);
            }
        }
    }
}

To consume above class in your plugin, use the following code:

using System;
using System.Linq;
using HayerCrmPackage.Plugins.Entities;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;

namespace HayerCrmPackage.Plugins
{
    public class PreCaseCreate : Plugin
    {
        public PreCaseCreate()
            : base(typeof(PreCaseCreate))
        {
            base.RegisteredEvents.Add(new Tuple<int, string, string, Action<LocalPluginContext>>(20, "Create", "incident", new Action<LocalPluginContext>(ExecutePreCaseCreate)));            
        }

        protected void ExecutePreCaseCreate(LocalPluginContext localContext)
        {
            if (localContext == null)
            {
                throw new ArgumentNullException("localContext");                
            }

            var pluginContext = localContext.PluginExecutionContext;
            var service = localContext.OrganizationService;
            var context = new OrganizationServiceContext(service);

            var targetEntity = (pluginContext.InputParameters != null && pluginContext.InputParameters.Contains("Target"))
            ? (Entity)pluginContext.InputParameters["Target"]
            : null;

            // Converting Entity to Incident
            var incident = (targetEntity != null && targetEntity.LogicalName == Incident.EntityLogicalName) ? targetEntity.ToEntity<Incident>() : null;
            
            // If you want to update the number of working days to add, change the value of 2nd parameter below
            incident.new_AutoClosureDate = AddWorkingDaysClass.AddWorkingAndBusinessClosureDays(DateTime.Now, 7, service,
                        pluginContext);
        }
    }
}

Happy Coding

P. S. Hayer
(ਪ੍ਰੇਮਜੀਤ ਸਿੰਘ ਹੇਰ)

Ref:
 1. Adding Working Week Days to a Specific Date
 2. Check if Date Time is in Date Range

Please check my other (non-CRM) blog here: Programming Blogs

CRM 2011: How to Cancel/Terminate Workflow Programmatically using C#

I was assigned a task where workflow was running on status change and then it waits for few days to send an email message to contact. During the period of wait if status has been changed to something else then workflow should be cancelled.

So I have written a plugin with following code, which check for the status. if status is changed then cancel the workflow as following. There is an easy way to code by hard-coding the process Guid but I tried to write generic code so that I can reuse it if needed.

        /// 

        /// Cancel the running workflow if it is still not completed
        /// 
        /// Organization Service Context
        /// Regarding Entity Id
        /// Name of the workflow
        /// Logical name of the Entity on which worklow is running
        private static void CancelRunningWorkflow(OrganizationServiceContext context,string entityLogicalName, Guid regardingObjectId, string processName)
        {
           // Get Process by name where its running on given incident
           // and current status is waiting, in process or waiting for resources
            var processes = (from p in context.CreateQuery<AsyncOperation>()
                where p.PrimaryEntityType == entityLogicalName
                      && p.RegardingObjectId.Id == regardingObjectId
                      && p.Name == processName
                      &&
                      (p.StatusCode.Value == 10 ||       // Waiting
                       p.StatusCode.Value == 20 ||       // In Process
                       p.StatusCode.Value == 0)          // Waiting For Resources
                select new AsyncOperation {Id = p.Id, StateCode = p.StateCode, StatusCode = p.StatusCode})
                .ToList();

           // Go through each process and set the status to Cancelled
            foreach (var process in processes)
            {
                process["statecode"] = new OptionSetValue(3);
                process["statuscode"] = new OptionSetValue(32);       // Cancelled
                context.UpdateObject(process);
            }
            // Save the changes
            context.SaveChanges();
        }

You can call the method as below:

CancelRunningWorkflow(context, Incident.EntityLogicalName, incident.Id, "Workflow to Stop");

You can create linq Context as following:

OrganizationServiceContext context = new OrganizationServiceContext(_service);

Note: Make sure use have permissions to cancel the process.

Happy Coding

P. S. Hayer
(ਪ੍ਰੇਮਜੀਤ ਸਿੰਘ ਹੇਰ)

Please check my other (non-CRM) blog here: Programming Blogs