Classe LabelQueryExpression

Articolo
12/03/2014

Si applica a: CRM 2015 on-prem, CRM Online

Defines the languages for the labels to be retrieved for metadata items that have labels.

Spazio dei nomi: Microsoft.Xrm.Sdk.Metadata.Query
Assembly: Microsoft.Xrm.Sdk (in Microsoft.Xrm.Sdk.dll)

Sintassi

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

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

Note

The number of labels returned for each item depends on the number of language packs installed by the organization. If no additional language packs are installed, there will only be labels for the organization base language. For best performance when additional language packs are installed you can limit labels to those that correspond to the user’s language preference. These preferences can be determined using the values returned by the client-side context getUserLcid function or by querying the UserSettings.UILanguageId value.

The following example shows those portions of the Sample: Query Metadata and Detect Changes which deal with setting the LabelQueryExpression.

private Guid _userId;
private int _languageCode;
   
   
   ...
   
   
   
_userId = ((WhoAmIResponse)_service.Execute(new WhoAmIRequest())).UserId;
_languageCode = RetrieveUserUILanguageCode(_userId);
   
   
   ...
   
   
   
protected int RetrieveUserUILanguageCode(Guid userId)
{
 QueryExpression userSettingsQuery = new QueryExpression("usersettings");
 userSettingsQuery.ColumnSet.AddColumns("uilanguageid", "systemuserid");
 userSettingsQuery.Criteria.AddCondition("systemuserid", ConditionOperator.Equal, userId);
 EntityCollection userSettings = _service.RetrieveMultiple(userSettingsQuery);
 if (userSettings.Entities.Count > 0)
 {
  return (int)userSettings.Entities[0]["uilanguageid"];
 }
 return 0;
}
   
   
   ...
   
   
   

//A label query expression to limit the labels returned to only those for the user's preferred language
LabelQueryExpression labelQuery = new LabelQueryExpression();
labelQuery.FilterLanguages.Add(_languageCode);

Gerarchia ereditarietà

System.Object
Microsoft.Xrm.Sdk.Metadata.Query.MetadataQueryBase
Microsoft.Xrm.Sdk.Metadata.Query.LabelQueryExpression

Thread Safety

Tutti i membri statici pubblici (Shared in Visual Basic) di questo tipo sono thread-safe. Non è garantito che i membri di istanza siano thread-safe.

Piattaforme

Piattaforme di sviluppo

Windows Vista, Windows Server 2003 e

Piattaforme di destinazione

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

Change History

Vedere anche

Riferimento

Membri LabelQueryExpression
Spazio dei nomi Microsoft.Xrm.Sdk.Metadata.Query

Altre risorse

Query and Capture Changes to Metadata
Customize Labels to Support Multiple Languages
Sample: Query Metadata and Detect Changes

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