IDataReaderExtension.AggregationFieldCount Property
Gets the number of fields by which the data is aggregated.
Namespace: Microsoft.ReportingServices.DataProcessing
Assemblies: Microsoft.ReportingServices.Interfaces (in Microsoft.ReportingServices.Interfaces.dll)
Microsoft.ReportingServices.SharePoint.UI.WebParts (in Microsoft.ReportingServices.SharePoint.UI.WebParts.dll)
Syntax
'Declaration
ReadOnly Property AggregationFieldCount As Integer
Get
'Usage
Dim instance As IDataReaderExtension
Dim value As Integer
value = instance.AggregationFieldCount
int AggregationFieldCount { get; }
property int AggregationFieldCount {
int get ();
}
abstract AggregationFieldCount : int
function get AggregationFieldCount () : int
Property Value
Type: System.Int32
When not positioned in a valid record set, 0; otherwise the number of aggregation columns in the current record. The default is -1.
Remarks
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.