Where can I find XrmServicesContext Class? - dynamics-crm

Question

I found this snippet that provides a creation of a new entity called annotation.
I can't find the class XrmServicesContext declared into the using directive.
has anybody knows what the hell is this?
private static void AddNoteToContact(IOrganizationService service, Guid id)
{
Entity annotation = new Entity();
annotation.LogicalName = "annotation";
using (var crm = new XrmServicesContext(service))
{
var contact = crm.ContactSet.Where(c => c.ContactId == id).First();
Debug.Write(contact.FirstName);
annotation["createdby"] = new EntityReference("systemuser", new Guid("2a213502-db00-e111-b263-001ec928e97f"));
annotation["objectid"] = contact.ToEntityReference();
annotation["subject"] = "Creato con il plu-in";
annotation["notetext"] = "Questa note è stata creata con l'esempio del plug-in";
annotation["ObjectTypeCode"] = contact.LogicalName;
try
{
Guid annotationId = service.Create(annotation);
crm.AddObject(annotation);
crm.SaveChanges();
}
catch (Exception e)
{
throw new Exception(e.Message);
}
// var note = new Annotation{
//Subject ="Creato con il plu-in",
//NoteText ="Questa note è stata creata con l'esempio del plug-in",
//ObjectId = contact.ToEntityReference(),
//ObjectTypeCode = contact.LogicalName
};
}

Answer 1

First you have to generate the early bound entity classes. Check this article. Then, insert using statement in your code.
In your example you are using combination of early and late binding. I suggest you to choose one of them. In case of early binding, after generating early binding classes you can modify your code like:
Annotation annotation = new Annotation();
using (var crm = new XrmServiceContext(service))
{
annotation.ObjectId = contact.ToEntityReference();
annotation.Subject = "Creato con il plu-in";
annotation.NoteText = "Questa note e stata creata con l'esempio del plug-in";
annotation.ObjectTypeCode = Contact.LogicalName;
crm.AddObject(annotation);
crm.SaveChanges();
}
You have one error here, annotation.CreatedBy field is read only and you can't set value to this from code.
If you're gonna use late binding, XrmServiceContext is not necessary. You can get Contact from CRM using QueryExpression. Find examples here. And for annotation create use:
Guid annotationId = service.Create(annotation);

Answer 2

In SDK/bin/CrmSvcUtil.exe, This tool is used to generate early bound entity classes
from command prompt, run CrmSvcUtil.exe with parameters i.e.
If your sdk bin location is "D:\Data\sdk2013\SDK\Bin\CrmSvcUtil.exe" then your command will like this,
cmd:
D:\Data\sdk 2013\SDK\Bin>CrmSvcUtil.exe /out:Xrm\Xrm.cs /url:[OrganizationServiceUrl] /username:[yourusername] /password:[yourpass] /namespace:Xrm /serviceContextName:XrmServiceContext
[OrganizationServiceUrl]: is your organization service url, u can find it from setting/customization/Developer rosources/Organization service e.g
https://msdtraders.api.crm.dynamics.com/XRMServices/2011/Organization.svc
[yourusername]: your user name
[yourpass]: your password
This will generate and Entity classes in file with name Xrm.cs in bin/Xrm/Xrm.cs. Create folder Xrm in bin if it not exist, or edit parameters in cmd [out:Xrm\Xrm.cs].
Add Xrm.cs in your project
Add using statement in your code where you use XrmServicesContext.
like using Xrm;
Now you can use/access XrmServicesContext and all Entities ...... enjoy.