IDataReaderExtension.AggregationFieldCount Property

Gets the number of fields by which the data is aggregated.

命名空间: Microsoft.ReportingServices.DataProcessing
程序集: Microsoft.ReportingServices.Interfaces (in microsoft.reportingservices.interfaces.dll)

语法

声明
<StrongNameIdentityPermissionAttribute(SecurityAction.LinkDemand, PublicKey:="0024000004800000940000000602000000240000525341310004000001000100272736ad6e5f9586bac2d531eabc3acc666c2f8ec879fa94f8f7b0327d2ff2ed523448f83c3d5c5dd2dfc7bc99c5286b2c125117bf5cbe242b9d41750732b2bdffe649c6efb8e5526d526fdd130095ecdb7bf210809c6cdad8824faa9ac0310ac3cba2aa0523567b2dfa7fe250b30facbd62d4ec99b94ac47c7d3b28f1f6e4c8")> _
ReadOnly Property AggregationFieldCount As Integer

[StrongNameIdentityPermissionAttribute(SecurityAction.LinkDemand, PublicKey="0024000004800000940000000602000000240000525341310004000001000100272736ad6e5f9586bac2d531eabc3acc666c2f8ec879fa94f8f7b0327d2ff2ed523448f83c3d5c5dd2dfc7bc99c5286b2c125117bf5cbe242b9d41750732b2bdffe649c6efb8e5526d526fdd130095ecdb7bf210809c6cdad8824faa9ac0310ac3cba2aa0523567b2dfa7fe250b30facbd62d4ec99b94ac47c7d3b28f1f6e4c8")] 
int AggregationFieldCount { get; }

[StrongNameIdentityPermissionAttribute(SecurityAction::LinkDemand, PublicKey=L"0024000004800000940000000602000000240000525341310004000001000100272736ad6e5f9586bac2d531eabc3acc666c2f8ec879fa94f8f7b0327d2ff2ed523448f83c3d5c5dd2dfc7bc99c5286b2c125117bf5cbe242b9d41750732b2bdffe649c6efb8e5526d526fdd130095ecdb7bf210809c6cdad8824faa9ac0310ac3cba2aa0523567b2dfa7fe250b30facbd62d4ec99b94ac47c7d3b28f1f6e4c8")] 
property int AggregationFieldCount {
    int get ();
}

/** @property */
/** @attribute StrongNameIdentityPermissionAttribute(SecurityAction.LinkDemand, PublicKey="0024000004800000940000000602000000240000525341310004000001000100272736ad6e5f9586bac2d531eabc3acc666c2f8ec879fa94f8f7b0327d2ff2ed523448f83c3d5c5dd2dfc7bc99c5286b2c125117bf5cbe242b9d41750732b2bdffe649c6efb8e5526d526fdd130095ecdb7bf210809c6cdad8824faa9ac0310ac3cba2aa0523567b2dfa7fe250b30facbd62d4ec99b94ac47c7d3b28f1f6e4c8") */ 
int get_AggregationFieldCount ()

function get AggregationFieldCount () : int

属性值

When not positioned in a valid record set, 0; otherwise the number of aggregation columns in the current record. The default is -1.

备注

The AggregationFieldCount property enables you to supply specific, aggregation information about your result set to the report server. Take, for instance, the following result set:

City          State          Sales
====================================
Seattle       WA             150.65
Seattle       (null)         150.65
Tacoma        WA              75.54
Tacoma        (null)          75.54
(null)        WA             226.19
Portland      OR             112.25
Portland      (null)         112.25
(null)        OR             112.25
(null)        (null)         338.44

You should return an integer value representing the number of fields that are aggregation fields for each row in your result set. In the previous example, AggregationFieldCount should return 2 for the first row, 1 for the second row, 2 for the third row and so forth. For row nine, AggregationFieldCount should return 0.

After executing a query that does not return rows, AggregationFieldCount should return -1.

线程安全

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

请参阅

参考

IDataReaderExtension Interface
IDataReaderExtension Members
Microsoft.ReportingServices.DataProcessing Namespace