Multi-Column Lists
A multi-column list is a very basic type of tabular data table that allows data to be arranged in columns. Unlike a traditional data table, with its rows and columns, a multi-column list displays all its data in cells typically arranged into a small number of columns. Developers should consider this primarily as a means of creating "lists", rather than as a way to present data in a table.
About Multi-Column Lists
The following illustrates the difference between a data table and a multi-column list:
As shown above, all of the data from one record is available in one cell of the multi-column list.
The multi-column list shown above is organized so that the data is arranged from top-to-bottom in the first column, showing all the information from one record in individual cells, then from top-to-bottom in the second column. The number of columns is configurable.
The example above shows the same data in a 3-column list. Because the direction of this list is Down, the sort order (based on Last Name) causes the data to be arranged in a top-to-bottom fashion in each column.
Now, in the example shown above, the direction has been switched to Across, so the sort order runs left-to-right.
Developers can choose any type of datalayer element to retrieve data for the list. Label elements are used to display the data, and developers can combine them with other types of elements to organize the data.
The Data Multi-Column List element is used to create the list in a report definition. Multi-column lists are different from other types of data tables in that the number of columns that can be displayed is not dependent on the datalayer. Data Table Column elements arenot used and, instead, developers set the Data Multi-Column List element's Columns attribute to a numeric value that determines the fixed number of columns the list will display.
The number of rows displayed is determined automatically by distributing the data in the columns, based on the list orientation, beginning with the upper left-hand corner of the list. Any elements (other than datalayer elements) placed below a Data Multi-Column List element are repeated for each row of data in the datalayer. Content that must appear only once in the final report should not be placed within a multi-column list.
Creating a Multi-Column List
Creating a multi-column list involves configuring the list, retrieving data for the list, and displaying the list. The element itself does the work of arranging the data.
- Add a Data Multi-Column List element to your definition.
- Set the Columns attribute to the desired number of list columns.
- Set the ID attribute.
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Set Multi-list Direction attribute to control the data layout.
Set it to Across to display data left-to-right: a new table cell
is created for each row in the data layer. Leave it blank, or set it to
Down, to display data top-to-bottom.
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Beneath the Data Multi-Column List element, add a
DataLayer element and configure it as necessary.
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Beneath the Data Multi-Column List element, add Label elements,
New Lines, etc. as needed.
Data Table Column elements
are not necessary. Use a standard @Data token
for the Label element's Caption attributes to display the data.
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In the example shown above, multiple Label and New Line elements have
been added. The Label element that displays City and Region data uses a
formula that suppresses the display of a comma after the City if there
is no Region data.
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And the example above shows the resulting output. The background color
has been set using CSS for illustration purposes.