Dynamics CRM: Use OrganizationServiceContext (LINQ) to Retrieve Data + Tips

I have quite a long journey to hands-on Dynamics CRM (around six years and still counting), and I have a confession to make. I never use OrganizationServiceContext ever! This class will allow you to retrieve Dynamics CRM data using the infamous LINQ (Language-Integrated Query) which more convenient compare using to FetchXml/QueryExpression/QueryAttribute. The first thing that we must …