1. Add Value Writer

As of Dynamics CRM Connect 1.2, no value writer is included that is able to set values on attributes on CRM entities that are option sets. You must add a component to do this.

1. In Visual Studio, create a new project:

Project template	Class Library
Name	Examples.DynamicsCrm

2. Add references to following NuGet packages:

• Sitecore.DataExchange.Providers.DynamicsCrm

3. Add the following class:

using Microsoft.Xrm.Sdk;
using Sitecore.DataExchange.DataAccess;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;

namespace Examples.DynamicsCrm
{
    public class EntityAttributeOptionSetValueWriter : IValueWriter
    {
        public EntityAttributeOptionSetValueWriter(string attributeName)
        {
            this.AttributeName = attributeName;
        }
        public string AttributeName { get; private set; }

        public CanWriteResult CanWrite(object target, object value, DataAccessContext context)
        {
            var canWrite = false;
            var isGuess = false;
            if (value != null && value is int)
            {
                if (target is Entity)
                {
                    canWrite = true;
                    isGuess = true;
                }
            }
            return new CanWriteResult { CanWriteValue = canWrite, IsGuess = isGuess};
        }
        public bool Write(object target, object value, DataAccessContext context)
        {
            if (value != null && value is int)
            {
                var entity = target as Entity;
                if (entity != null)
                {
                    if (entity.Attributes.ContainsKey(this.AttributeName))
                    {
                        if (entity.Attributes[this.AttributeName] is OptionSetValue)
                        {
                            var value2 = entity.Attributes[this.AttributeName] as OptionSetValue;
                            value2.Value = (int)value;
                            return true;
                        }
                    }
                    else
                    {
                        entity.Attributes[this.AttributeName] = new OptionSetValue((int)value);
                        return true;
                    }
                }
            }
            return false;
        }
    }
}