The OnDataCombined Event allows the inspection and/or modification of the raw data set after retrieval from the Data Sources and initial combining within Exago. A common use of this event is to modify or blank sensitive data fields in a Report depending on the authorizations available to the user executing the report.
In v2018.1 this event was extended to provide access to the active execution object, as well as the ability to modify report execution schema via the SessionInfo object. After modifying the execution schema, the method Report.ReprocessAfterAlteration() must be called in order to process the changes.
Signature pre-v2018.1
For custom code the args array is structured as follows:
args[] contains a single DataTable of the combined data in position zero.
For .NET Assemblies the method signature is as follows:
DataTable EventHandlerName(SessionInfo sessionInfo, DataTable combinedData)
Signature v2018.1+
For custom code the args array is structured as follows:
args[] contains a single DataTable of the combined data in position zero and the ActiveLocalExecution object in position one.
For .NET Assemblies the method signature is as follows:
DataTable EventHandlerName(SessionInfo sessionInfo, DataTable combinedData, ActiveLocalExecution execution)
NoteThe ActiveLocalExecution object is defined in the
WebReports.Api.Executenamespace.
Expected Return
The OnDataCombined Event expects a DataTable to be returned. The schema of the DataTable must match that of combinedData.
Notes
In the DataTable, if a Data Object has an Id then that will be used as the column names, otherwise the database name will be used. Data Fields will always use their database names despite any Column Metadata.