Question

Requirements:

1. The rows must be grouped to groups
2. There will be subtotal rows for these groups = header rows that not in datasource for actual data rows.
3. Sorting and filtering should be so that rows stay under their groups/headers
4. Every column can be used for sorting and filtering
5. Columns can be added and deleted
6. Filtering is like in Excel -> by many columns and many values for each column can be chosen as filter criteria.
7. Rows filtered out are not calculated in subtotal rows.
8. Possibly other non-data rows can be in table and naturally they are not subject to subtotal calculation / filtering.

I specially want to know is there some kind of support for filtering like this: http://cybersavvyservices.files.wordpress.com/2011/04/excel-filter-drop-down.png

Answer 1

Adding 2nd answer might result million down votes but gotta add it ’cause my previous answer does not seem to make sense.

I found an article that describes more or less the requirements stated in my orig. question:

http://msdn.microsoft.com/en-us/library/ff407126.aspx

Requirement:

1. -> article explains this
2. -> these can be added to group header by making it more complex. sums of the columns can be fetched like in article the row sum
3. -> default functionality
4. -> sorting works for all columns in article. filtering example can be extended
5. -> this has to be implemented. column headers can have controls for hiding a column (see my other answer to my own question in Is it possible to hide columns in WPF DataGrid when defined and bound with CollectionView?)
6. -> implement popup for columnheader and dynamically fill it with values in that column
7. -> easy to implement with a converter and binding of the ui element that shows the values in group header.
8. -> it can be added to bound datasource as extra row or the data can be shown in groupheader if it’s only little data for each groups.