Reporting Services 2005: Attempt to export to Excel gives “Object reference not set to an instance of an object.” error
问题 I have a moderately complex report consisting of a lot of subreports. One particular one is causing an issue: if you run it standalone, it works fine. If you integrate it as a subreport, it refuses to allow you to export to Excel format (from Preview), with the following error: An error occurred during local report processing. An error occurred during rendering of the report. An error occurred during rendering of the report. Object reference not set to an instance of an object. Producing to