Get User Role For CRM from .Net App.

//Para obtener el Guid Id del usuario que ejecuta el WS.
WhoAmIRequest userRequest = new WhoAmIRequest();
WhoAmIResponse userResp = (WhoAmIResponse)
oCrmService.Execute(userRequest);
userResp.UserId; string
UserRole=GetRole(userResp.UserId;)

private String GetRole(Guid UserID) {
//Guid userid = new Guid(UserID);
CrmService oCrmService = new CrmService();
oCrmService.Credentials = System.Net.CredentialCache.DefaultCredentials;
QueryExpression qe = new QueryExpression();
qe.EntityName = "role";
qe.ColumnSet = new AllColumns();
LinkEntity le = new LinkEntity();
le.LinkFromEntityName = "role";
le.LinkFromAttributeName = "roleid";
le.LinkToEntityName = "systemuserroles";
le.LinkToAttributeName = "roleid";
LinkEntity le2 = new LinkEntity();
le2.LinkFromEntityName = "systemuserroles";
le2.LinkFromAttributeName = "systemuserid";
le2.LinkToEntityName = "systemuser";
le2.LinkToAttributeName = "systemuserid";
ConditionExpression ce = new ConditionExpression();
ce.AttributeName = "systemuserid";
ce.Operator = ConditionOperator.Equal;
ce.Values = new object[]{UserID};
le2.LinkCriteria = new FilterExpression();
le2.LinkCriteria.Conditions = new ConditionExpression[]{ce};
le.LinkEntities = new LinkEntity[]{le2};
qe.LinkEntities = new LinkEntity[]{le};
BusinessEntityCollection bec = oCrmService.RetrieveMultiple(qe);
if (bec.BusinessEntities.Length > 0)
{
return ((role)bec.BusinessEntities[0]).name.ToString();
}
else throw new Exception("User not found");
// return "";
}