LinkEntity 클래스

아티클
07/17/2015

Specifies the links between multiple entity types used in creating complex queries.

네임스페이스: Microsoft.Xrm.Sdk.Query
어셈블리: Microsoft.Xrm.Sdk(Microsoft.Xrm.Sdk.dll에 있음)

구문

‘선언
<DataContractAttribute(Name:="LinkEntity", Namespace:="https://schemas.microsoft.com/xrm/2011/Contracts")> _
Public NotInheritable Class LinkEntity
    Implements IExtensibleDataObject

[DataContractAttribute(Name="LinkEntity", Namespace="https://schemas.microsoft.com/xrm/2011/Contracts")] 
public sealed class LinkEntity : IExtensibleDataObject

예제

q = new QueryExpression();
q.EntityName = "account";
q.ColumnSet = new ColumnSet();
q.ColumnSet.Columns.Add("name");

q.LinkEntities.Add(new LinkEntity("account", "contact", "primarycontactid", "contactid", JoinOperator.Inner));
q.LinkEntities[0].Columns.AddColumns("firstname", "lastname");
q.LinkEntities[0].EntityAlias = "temp";

q.Criteria = new FilterExpression();
q.Criteria.AddCondition("accountnumber", ConditionOperator.Equal, accountNumber);
q.Orders.Add(new OrderExpression("name", OrderType.Descending));
q.Distinct = true;
EntityCollection ec = this.Context.Proxy.RetrieveMultiple(q);

Log.Assert(ec.Entities.Count == 3, "Expected 3 entities, received {0}", ec.Entities.Count);
Log.Assert((string)ec.Entities[0]["name"] == "SdkAccount3", "First Entity should be SdkAccount3");
Log.Assert((string)ec.Entities[1]["name"] == "SdkAccount2", "First Entity should be SdkAccount2");
Log.Assert((string)ec.Entities[2]["name"] == "SdkAccount1", "First Entity should be SdkAccount1");
Log.Assert((string)((AliasedValue)ec.Entities[0]["temp.firstname"]).Value == (string)contact["firstname"], "Expected {0} Got {1}", contact["firstname"], ec.Entities[0]["temp.firstname"]);
Log.Assert((string)((AliasedValue)ec.Entities[1]["temp.lastname"]).Value == (string)contact["lastname"], "Expected {0} Got {1}", contact["lastname"], ec.Entities[1]["temp.lastname"]);

상속 계층

System.Object
Microsoft.Xrm.Sdk.Query.LinkEntity

스레드 보안

이 형식의 공용 정적(Visual Basic에서는 Shared) 구성원은 스레드로부터 안전합니다. 인스턴스 구성원은 스레드로부터 안전하지 않을 수 있습니다.

플랫폼

Development Platforms

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

Target Platforms

Windows Server 2008,Windows Server 2012,Windows 7

Change History

참고 항목

참조

LinkEntity 구성원
Microsoft.Xrm.Sdk.Query 네임스페이스
LinkEntities

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