ColumnSet 類別

文章
07/17/2015

Specifies the attributes for which non-null values are returned from a query.

命名空間: Microsoft.Xrm.Sdk.Query
組件: Microsoft.Xrm.Sdk (在 Microsoft.Xrm.Sdk.dll 中)

語法

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

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

備註

The ColumnSet class is used with methods and messages that retrieve one or more records from the database. The query returns non-null values for the attributes that are contained in the Columns property. The attributes not included in the ColumnSet will contain null values. If the column set includes attributes that are not valid for retrieve, they will be ignored and no values will be returned for those attributes.

The primary key is always returned and contains a non-null value.

Attributes are specified by name. For more information, see SchemaName.

繼承階層

System.Object
Microsoft.Xrm.Sdk.Query.ColumnSet

執行緒安全

此類型的任何公用靜態 (Visual Basic 中的 Shared) 成員都具備執行緒安全。任何執行個體成員都不保證具備執行緒安全。

平台

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

請參閱

參照

其他資源

Using the ColumnSet Class
Using the QueryByAttribute Class
Using the QueryExpression Class

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