Unable to populate group header value

[Jonas]

I have a report that I have populated programmatically with data.  The data in the detail section populates correctly.  I recently introduced a group into the report, but when I add a field (one of the detail fields) to the new group, the field is always blank.  I feel like there's some missing piece to setting the group values, but I can't find any examples online that mirror my scenario.

Here's how the report looks in the designer:

Here's the group configuration:

Here's where I'm setting the data into the table:

                        var table = report.Items.Find(pair.Key, true)[0] as Table;
                        if (table != null)
                        {
                            table.DataSource = data; // data is an List<Model>
                        }

The report doesn't actually group and the field in the group header is empty:

 

[Momchil]

Hello Jonas,

I see that you have created a support ticket regarding the same issue, which I have replied to.

You can take a look at what I have suggested there, but I will provide a summary here as well, in case someone else faces a similar issue.

The likely cause for the issue is that a report group is used, but no data is supplied to the report itself. This causes the report's group header/footer to be empty, and the detail section of the report to be rendered only once in a "static" group.

To resolve this behavior, you can do either of the following:

• Send the data only to the data source of the report, and add a binding to the Table item, so that it uses the DataObject of its parent.
• Remove the report group and apply the grouping to the Table item, as shown in the How to Add groups to Table item and Crosstab item documentation article.

Best Regards,
Momchil
Progress Telerik