Classe EntityQueryExpression

Artigo
12/03/2014

Aplica-se a: CRM 2015 on-prem, CRM Online

Defines a complex query to retrieve entity metadata.

Namespace: Microsoft.Xrm.Sdk.Metadata.Query
Assembly: Microsoft.Xrm.Sdk (em Microsoft.Xrm.Sdk.dll)

Sintaxe

'Declaração
<DataContractAttribute(Name:="EntityQueryExpression", Namespace:="https://schemas.microsoft.com/xrm/2011/Metadata/Query")> _
Public NotInheritable Class EntityQueryExpression
    Inherits MetadataQueryExpression

[DataContractAttribute(Name="EntityQueryExpression", Namespace="https://schemas.microsoft.com/xrm/2011/Metadata/Query")] 
public sealed class EntityQueryExpression : MetadataQueryExpression

Comentários

The following example shows the use of an EntityQueryExpression to retrieve entity metadata.

//An entity query expression to combine the filter expressions and property expressions for the query.
EntityQueryExpression entityQueryExpression = new EntityQueryExpression()
{

 Criteria = EntityFilter,
 Properties = EntityProperties,
 AttributeQuery = new AttributeQueryExpression()
 {
  Criteria = AttributeFilter,
  Properties = AttributeProperties
 },
 LabelQuery = labelQuery

};

//Retrieve the metadata for the query without a ClientVersionStamp
RetrieveMetadataChangesResponse initialRequest = getMetadataChanges(entityQueryExpression, null, DeletedMetadataFilters.OptionSet);
   
   
   ...
   
   
   
protected RetrieveMetadataChangesResponse getMetadataChanges(
 EntityQueryExpression entityQueryExpression,
 String clientVersionStamp,
 DeletedMetadataFilters deletedMetadataFilter)
{
 RetrieveMetadataChangesRequest retrieveMetadataChangesRequest = new RetrieveMetadataChangesRequest()
 {
  Query = entityQueryExpression,
  ClientVersionStamp = clientVersionStamp,
  DeletedMetadataFilters = deletedMetadataFilter
 };

 return (RetrieveMetadataChangesResponse)_service.Execute(retrieveMetadataChangesRequest);

}

Hierarquia de Herança

System.Object
   Microsoft.Xrm.Sdk.Metadata.Query.MetadataQueryBase
     Microsoft.Xrm.Sdk.Metadata.Query.MetadataQueryExpression
      Microsoft.Xrm.Sdk.Metadata.Query.EntityQueryExpression

Segurança do Thread

Todos os membros estáticos (Shared in Visual Basic) desse tipo são protegidos por thread. Não há nenhum garantia de que os membros de instância sejam protegidos por thread.

Plataformas

Plataformas de desenvolvimento

Windows Vista, Windows Server 2003 e

Plataformas de destino

Windows 98,Windows 2000,Windows 2000 Server,Windows CE,Windows Server 2008,Windows 98 Second Edition,Pocket PC,Smart Phone,Windows Server 2003,Windows XP Professional,Windows Vista,Windows XP

Change History

Consulte também

Referência

Membros de EntityQueryExpression
Namespace Microsoft.Xrm.Sdk.Metadata.Query

Outros recursos

Query and Capture Changes to Metadata
Sample: Query Metadata and Detect Changes

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