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Editorial Team
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Asked: 2026-06-07T00:55:35+00:00

I have a C# 2010 application that uses Crystal Reports for VS 2010. My

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I have a C# 2010 application that uses Crystal Reports for VS 2010. My report’s purpose is to show where a person should be each day of one or more weeks. The format is this:

enter image description here

Please note that it is displayed in pairs, rather than a table with a general header.

It uses a DataSet that contains two DataTables, one for the header dates and one for the location.

The problem is that if I have n items in each DataTable, the report displays n^2 pairs of header / location instead of just n. The pattern is similar to a Cartesian product of the two tables.

I think it might have something to do with the linking part in the report’s Database Expert but I couldn’t manage to fix it. It contains no links right now.

The DataSet I use looks like this:

enter image description here

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  1. Editorial Team

    Why do you need a table for the headers? What are you trying to accomplish?

    Why not add a date (StartOfWeek) to the WeekTable that represents the starting date of the week? If you have that date, each column header would be a formula field that calculates the day based on the StartOfWeek field. So much easier and it eliminates the Cartesian product that you are experiencing.

    ** edit **

    There would be 7 header formulae (one for each day):

    //{@Sunday}
DateAdd("d", 0, {WeekTable.StartOfWeek})

...

//{@Saturday}
DateAdd("d", 7, {WeekTable.StartOfWeek})

    Add each field to the Page Header section and format as desired (they are Date values).

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