Detail grouping is useful when you do not want to repeat values within the details. When a detail grouping is set, the value repeats for each distinct result of the grouping expression instead of for each row of data. For example, if you use the Customers table to create a list of countries without setting the details grouping, each country is listed as many times as there are customers in that country. If you set the details grouping to =Fields!Country.Value each country is listed only once.
Note: If the detail grouping expression you use results in a value that is distinct for every row of data, a customer number, for example, you will see no difference in the results.
The Detail Grouping page of the List dialog has the following tabs.
General
Name: Enter a name for the group that is unique within the report. This property cannot be set until after a Group on expression is supplied. You can only use underscore (_) as a special character in the Name field. Other special characters such as period (.), space ( ), forward slash (/), backslash (\), exclamation (!), and hyphen (-) are not supported.
Group on: Enter an expression to use for grouping the data.
Document map label: Enter an expression to use as a label to represent this item in the table of contents (document map).
Parent group: For use in recursive hierarchies. Enter an expression to use as the parent group.
Filters
You need to provide three values to add a new filter to the collection: Expression, Operator, and Value.
Expression: Enter the expression to use for evaluating whether data should be included in the group.
Operator: Select from the following operators to decide how to compare the expression to the left with the value to the right.
- Equal Filters data for which the value on the left is equal to the value on the right.
- Like Filters data for which the value on the left is similar to the value on the right.
For more information on using the Like operator, see the MSDN Web site.
- NotEqual Filters data for which the value on the left is not equal to the value on the right.
- GreaterThan Filters data for which the value on the left is greater than the value on the right.
- GreaterThanOrEqual Filters data for which the value on the left is greater than or equal to the value on the right.
- LessThan Filters data for which the value on the left is less than the value on the right.
- LessThanOrEqual Filters data for which the value on the left is less than or equal to the value on the right.
- TopN Filters data items from the value on the left which are the top number specified in the value on the right.
- BottomN Filters items from the value on the left which are the bottom number specified in the value on the right.
- TopPercent Filters items from the value on the left which are the top percent specified in the value on the right.
- BottomPercent Filters items from the value on the left which are the bottom percent specified in the value on the right.
- In Filters items from the value on the left which are in the array of values specified on the right.
Selecting this operator enables the Values list at the bottom.
- Between Filters items from the value on the left which fall between the pair of values you specify on the right. Selecting this operator enables two Value boxes instead of one.
Value: Enter a value to compare with the expression on the left based on the selected operator. For multiple values used with the Between operator, the lower two value boxes are enabled.
Values: When you choose the In operator, you can enter as many values as you need in this list.
Sorting
Click the plus sign button to enter new sort expressions, and remove them using the X button.
In the Expression box, enter an expression by which to sort the data in the group, and under Direction, select Ascending or Descending for the selected sort expression.
Data Output
Element Name: Enter a name to be used in the XML output for this group.
Collection: Enter a name to be used in the XML output for the collection of all instances of this group.
Output: Choose Yes or No to decide whether to include this group in the XML output.
Layout
BreakLocation: Select from these options to decide where to insert a page break in relation to the group.
- None: Inserts no page break.
- Start: Inserts a page break before the group.
- End: Inserts a page break after the group.
- StartAndEnd: Inserts a page break before and after the group.
- Between: Inserts a page break between groups (at the end of a current group and the beginning of the next group).
NewPage:
- Next: A default value that makes a new group start from the immediate next page of the report.
- Odd: A new group starts from the next odd page of the report.
- Even: A new group starts from the next even page of the report.
See Manage Page Breaks in Data Regions topic for more detail.
Has own page numbering: Used in conjunction with the "Page Number in Section" and "Total Pages in Section" properties, tells the report that the group constitutes a new page numbering section.