SDK: Create Email Using Template

        private static Guid CreateEmailMessageFromTemplate(IOrganizationService service, EntityReference contact, Guid templateId, EntityReference fromQueue)
        {
            InstantiateTemplateRequest request = new InstantiateTemplateRequest()

            {
                TemplateId = templateId,
                ObjectId = contact.Id,
                ObjectType = contact.LogicalName
            };
            InstantiateTemplateResponse response = (InstantiateTemplateResponse)service.Execute(request);
            Entity email = response.EntityCollection[0];
            var toActivityParty = new Entity("activityparty");
            toActivityParty["partyid"] = new EntityReference("contact", contact.Id);
            EntityCollection toParty = new EntityCollection() { EntityName = "activityparty" };
            toParty.Entities.Add(toActivityParty);

            var fromActivityParty = new Entity("activityparty");
            fromActivityParty["partyid"] = fromQueue;
            EntityCollection fromParty = new EntityCollection() { EntityName = "activityparty" };
            fromParty.Entities.Add(fromActivityParty);

            email.Attributes["to"] = toParty;
            email.Attributes["from"] = fromParty;
            return service.Create(email);
        }

Restrict Browser Back button

history.pushState(null, null, location.href);
    window.onpopstate = function () {
        history.go(1);
    };

Use the above code to restrict going to the back page from the current page.

This piece of code comes very handy when you are working on dynamics portals and you have logic where you should not allow users to navigate to back page.