Clase de DeletedMetadataCollection

Artigo
12/03/2014

Se aplica a: CRM 2015 on-prem, CRM Online

The structure used to return deleted metadata.

Espacio de nombres: Microsoft.Xrm.Sdk.Metadata.Query
Ensamblado: Microsoft.Xrm.Sdk (en Microsoft.Xrm.Sdk.dll)

Sintaxis

'Declaración
<CollectionDataContractAttribute(Name:="DeletedMetadataCollection", Namespace:="https://schemas.microsoft.com/xrm/2011/Metadata/Query")> _
Public NotInheritable Class DeletedMetadataCollection
    Inherits DataCollection(Of DeletedMetadataFilters, DataCollection(Of Guid))

[CollectionDataContractAttribute(Name="DeletedMetadataCollection", Namespace="https://schemas.microsoft.com/xrm/2011/Metadata/Query")] 
public sealed class DeletedMetadataCollection : DataCollection<DeletedMetadataFilters,DataCollection<Guid>>

Comentarios

This is the collection returned as the RetrieveMetadataChangesResponse.DeletedMetadata property when the RetrieveMetadataChangesRequest has values set for the ClientVersionStamp and DeletedMetadataFilters properties.

The following code snippets taken from Sample: Query Metadata and Detect Changes show how the DeletedMetadataCollectioncan be used to detect deleted OptionSetMetadata.

protected String updateOptionLabelList(EntityQueryExpression entityQueryExpression, String clientVersionStamp)
{
 //Retrieve metadata changes and add them to the cache
 RetrieveMetadataChangesResponse updateResponse;
 try
 {
  updateResponse = getMetadataChanges(entityQueryExpression, clientVersionStamp, DeletedMetadataFilters.OptionSet);
  addOptionLabelsToCache(updateResponse.EntityMetadata, true);
  removeOptionLabelsFromCache(updateResponse.DeletedMetadata, true);

 }
 catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
 {
  // Check for ErrorCodes.ExpiredVersionStamp (0x80044352)
  // Will occur when the timestamp exceeds the Organization.ExpireSubscriptionsInDays value, which is 90 by default.
  if (ex.Detail.ErrorCode == unchecked((int)0x80044352))
  {
   //reinitialize cache
   _optionLabelList.Clear();

   updateResponse = getMetadataChanges(entityQueryExpression, null, DeletedMetadataFilters.OptionSet);
   //Add them to the cache and display the changes
   addOptionLabelsToCache(updateResponse.EntityMetadata, true);

  }
  else
  {
   throw ex;
  }

 }
 return updateResponse.ServerVersionStamp;
}
   
   
   ...
   
   
   
protected void removeOptionLabelsFromCache(DeletedMetadataCollection DeletedMetadata, Boolean showChanges)
{
 List<OptionSetOption> optionSetOptionsToRemove = new List<OptionSetOption>();

 if (DeletedMetadata.Keys.Contains(DeletedMetadataFilters.OptionSet))
 {
  DataCollection<Guid> optionsetmetadataids = (DataCollection<Guid>)DeletedMetadata[DeletedMetadataFilters.OptionSet];
  foreach (Guid metadataid in optionsetmetadataids)
  {
   foreach (OptionSetOption oso in _optionLabelList)
   {
    if (metadataid == oso.optionsetId)
    {
     optionSetOptionsToRemove.Add(oso);
    }
   }
  }
 }
 foreach (OptionSetOption option in optionSetOptionsToRemove)
 {
  _optionLabelList.Remove(option);
 }
 if (showChanges)
 {
  if (optionSetOptionsToRemove.Count > 0)
  {
   Console.WriteLine("{0} Option Labels removed", optionSetOptionsToRemove.Count);
   Console.WriteLine("{0} Total Option Labels currently cached", _optionLabelList.Count);
   Console.WriteLine("");
  }
  else
  {
   Console.WriteLine("No Option Labels removed.");
   Console.WriteLine("");
  }

 }
}

Jerarquía heredada

System.Object
Microsoft.Xrm.Sdk.DataCollection
Microsoft.Xrm.Sdk.Metadata.Query.DeletedMetadataCollection

Seguridad de hilo

Los miembros estáticos públicos (Shared en Visual Basic) de este tipo son seguros para el hilo. No se garantiza que los miembros de instancia sean seguros para el hilo.

Plataformas

Plataformas de desarrollo

Windows Vista, Windows Server 2003 y

Plataformas de destino

Windows 98,Windows 2000,Windows 2000 Server,Windows CE,Windows Server 2008,Windows 98 Second Edition,Pocket PC,Teléfono inteligente,Windows Server 2003,Windows XP Professional,Windows Vista,Windows XP

Change History

Vea también

Referencia

Miembros de DeletedMetadataCollection
Espacio de nombres de Microsoft.Xrm.Sdk.Metadata.Query
Retrieve Information about Deleted Metadata

Otros recursos

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

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