Some of the major advantages of using Crystal Reports are:
1. Rapid report development since the designer interface would ease the coding work for the programmer.
2. Can extend it to complicated reports with interactive charts and enhance the understanding of the business model
3. Exposes a report object model, can interact with other controls on the ASP.NET Web form
4. Can programmatically export the reports into widely used formats like .pdf, .doc, .xls, .html and .rtf

Report has got standard sections like 'Page Header', 'Page Footer', 'Report Header', 'Report Footer', and 'Details'.
However you can add other sections also. Select 'Sections' in the Insert menu item. You can insert group sections also.
If you don't want to show any section just right click on that section and suppress that.

CRAXDRT Error Occured on Server. -2147189176 : Logon Failed. Details:
Database Vendor Code: -329

Database is Informix with odbc System DSN setup on this webserver. Testing
connection through odbc panel works fine. Checked asp file and
authentication info is correct......

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For many Crystal Report creators, there has not been a good way to distribute your reports without additional programming. You can programmatically export to PDF then in your program email it or use BusinessObjects Enterprise to set up your report to a distribution list using a particular format. Now there is a free viewer called the Crystal Viewer that you can utilize to allow others without a version of Crystal Reports to view your report. The beauty of this viewer is how you can use many of the natural features inherent in Crystal for other users.