DevExpress by default gives you the functionality within the Model to group list views together based on a selected field and show a count of records within the Group Header as seen in the screenshot below.
A user can then expand each group to see each individual record. To give the user a better understanding and overview of the records we wish to add a group footer to each group and display a total of the Time In Days spent against each group.
Within the Module.Win project create a new blank View Controller and customise the code below as required within it to get the results you require.
/// <summary> /// Called when [view controls created]. /// </summary> protected override void OnViewControlsCreated() base.OnViewControlsCreated(); if (View.Id == "MyListView") GridControl grid = (GridControl)View.Control; GridView view = (GridView)grid.FocusedView; view.Columns.View.OptionsSelection.MultiSelect = true; view.OptionsSelection.MultiSelectMode = GridMultiSelectMode.CellSelect; view.OptionsView.GroupFooterShowMode = GroupFooterShowMode.VisibleAlways; GridColumn timeValueColumn = view.Columns["TimeInDays"]; GridGroupSummaryItem timeValueSummaryItem = new GridGroupSummaryItem(); timeValueSummaryItem.FieldName = "TimeInDays"; timeValueSummaryItem.SummaryType = SummaryItemType.Sum; timeValueSummaryItem.DisplayFormat = "Personnel Total (Days) =
0:n2"; timeValueSummaryItem.Tag = 1; timeValueSummaryItem.ShowInGroupColumnFooter = timeValueColumn; view.GroupSummary.Add(timeValueSummaryItem);
Implementing the above code creates a group footer against each group and displays a count of the Time In Days of each record within the group.