Gets the identifier of the current dashboard.
A String that identifies the current dashboard.
If the dashboard has been loaded from the location specified by the ASPxDashboard.DashboardXmlPath property, the DashboardId property contains the full path to the dashboard file.
If the dashboard has been provided at runtime, the DashboardId property contains the identifier assigned to the ASPxDashboard.DashboardXmlPath property.
To identify the data source for which the event is raised, use the CustomFilterExpressionEventArgs.DataSourceName property.
To specify the filter expression, use the CustomFilterExpressionEventArgs.FilterExpression property.