MetadataFilterExpression 类

应用到: CRM 2015 on-prem, CRM Online

Specifies complex condition and logical filter expressions used for filtering the results of a metadata query.

命名空间: Microsoft.Xrm.Sdk.Metadata.Query
程序集: Microsoft.Xrm.Sdk (在 Microsoft.Xrm.Sdk.dll 中)

语法

声明
<DataContractAttribute(Name:="MetadataFilterExpression", Namespace:="https://schemas.microsoft.com/xrm/2011/Metadata/Query")> _
Public NotInheritable Class MetadataFilterExpression
    Implements IExtensibleDataObject

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

备注

The following example shows the use of a MetadataFilterExpression to return non-intersect, user-owned entities not found in a list of excluded entities.

     // An array SchemaName values for non-intersect, user-owned entities that should not be returned.
     String[] excludedEntities = {
"WorkflowLog",
"Template",
"CustomerOpportunityRole",
"Import",
"UserQueryVisualization",
"UserEntityInstanceData",
"ImportLog",
"RecurrenceRule",
"QuoteClose",
"UserForm",
"SharePointDocumentLocation",
"Queue",
"DuplicateRule",
"OpportunityClose",
"Workflow",
"RecurringAppointmentMaster",
"CustomerRelationship",
"Annotation",
"SharePointSite",
"ImportData",
"ImportFile",
"OrderClose",
"Contract",
"BulkOperation",
"CampaignResponse",
"Connection",
"Report",
"CampaignActivity",
"UserEntityUISettings",
"IncidentResolution",
"GoalRollupQuery",
"MailMergeTemplate",
"Campaign",
"PostFollow",
"ImportMap",
"Goal",
"AsyncOperation",
"ProcessSession",
"UserQuery",
"ActivityPointer",
"List",
"ServiceAppointment"};

     //A filter expression to limit entities returned to non-intersect, user-owned entities not found in the list of excluded entities.
     MetadataFilterExpression EntityFilter = new MetadataFilterExpression(LogicalOperator.And);
     EntityFilter.Conditions.Add(new MetadataConditionExpression("IsIntersect", MetadataConditionOperator.Equals, false));
     EntityFilter.Conditions.Add(new MetadataConditionExpression("OwnershipType", MetadataConditionOperator.Equals, OwnershipTypes.UserOwned));
     EntityFilter.Conditions.Add(new MetadataConditionExpression("SchemaName", MetadataConditionOperator.NotIn, excludedEntities));
     MetadataConditionExpression isVisibileInMobileTrue = new MetadataConditionExpression("IsVisibleInMobile", MetadataConditionOperator.Equals, true);
     EntityFilter.Conditions.Add(isVisibileInMobileTrue);

继承层次结构

System.Object
  Microsoft.Xrm.Sdk.Metadata.Query.MetadataFilterExpression

线程安全性

此类型的所有公共静态（Visual Basic 中的 Shared）成员都是线程安全成员。不保证任何实例成员是线程安全成员。

平台

开发平台

Windows Vista、Windows Server 2003 和

目标平台

Windows 98,Windows 2000,Windows 2000 Server,Windows CE,Windows Server 2008,Windows 98 Second Edition,Pocket PC,智能电话,Windows Server 2003,Windows XP Professional,Windows Vista,Windows XP

Change History

另请参阅

参考

MetadataFilterExpression 成员
Microsoft.Xrm.Sdk.Metadata.Query 命名空间

其他资源

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

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