![]() ![]() Inside the report, you link the band to this logical DataSet and you use standard components to print the column values of this DataSet. OnNext, OnPrior you move your current row one next or one prior position.Īs you see, the row/column concept (a DataSet) is used to provide the data to the report, but you can pull your data from any structure you use to store the result of your calculations (lists, arrays, or any other object/structure/file etc.).OnGetValue and OnNewGetValue you provide values for each of the different columns of the current row.OnFirst you do whatever you have to do to start walking for the data.OnCheckEOF is functionally equivalent to the OnNeedData, if there's no more to print, you set the EOF var parameter to true.To connect a report to a data source managed by the program itself, you use a TfrxUserDataSet component, which let's you see a data set inside the report, but you manually specify the column names in the Fields (TStrings) property and manage and supply values programatically writing event handlers for the following events: I appologise for the vagueness of this question, I am very new to reporting software and any suggestions of where to go and what to look at would be greatly appreciated.įast reports use a intermediary object descending from _TFrxDataSet to connect the report engine which the data it prints. ![]() Is there anyway to fill out the values of a data band in code and have it print again until all data is printed without connecting the band to a dataset? Also fastReports doesn't seem to have an event similar to OnNeedData. The problem I'm having is Fast Reports seems to need a band to be connected to an actual data source, which I don't have. The Quick Report OnNeedData events are then used to fill out the bands until there is no more data (signified by setting MoreData = false) The current implementation pulls all the data out of the database, does a lot of work to organise and calculate the required data for the reports and stores all this in several different objects. I have been asked by my company to update the reporting functionality of a paticular application written in delphi and using Quick reports to use FastReports instead. Powerful and flexible net reports generator with visual report designer. ![]()
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March 2023
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