CRM 2011 常用对象
Microsoft.Xrm.Sdk.Entity
Microsoft.Xrm.Sdk.EntityReference
Microsoft.Xrm.Sdk.OptionSetValue
Microsoft.Xrm.Sdk.Query.ConditionExpression
Microsoft.Xrm.Sdk.Query.FilterExpression
Microsoft.Xrm.Sdk.Query.QueryExpression
Microsoft.Xrm.Sdk.EntityReferenceCollection
Microsoft.Xrm.Sdk.Relationship