When MessageBox is used in CellValidating event and during editing the RadGridView loses focus (for example click on button outside the grid), the event has been thrown twise.

In a DateTime column if you creating a new row, when enter into a DateTime cell the default date appears, but when you procceed to the next cell it does not saved. You have to open the DropDown Calendar and chose the same date as already shown to save it in the newly created row.

While scrolling down a grid with HTMLView settings, the rows shrink in both height and width towards the upper left corrner of the grid.

If you have two (or more) child views in RadGridView and one of them has horizontal scrollbar and greater height (more rows), when switching to it from a smaller one, the scrollbar overlaps latest row.

When there is an HtmlView defined, and ComboBox column, the ComboBox element is out of the bounds of the grid's cell.

RadGridView's SelectAll method does not trigger SelectionChanged event.

There is a validation condition for a given cell, implemented through the CellValidating event. The end user enters a wrong value and hits tab key. Validation occurs and the value has prevented from confirming. However, if after that the user presses escape key, the old value is not returned as expected.

When using Entity Framework as data source for RadGridView when deleting child rows the IndexOutOfRange exception is thrown.

RowValidating does not fire when moving from child row to parent row.

We have a RadGridView, which uses a custom object for data source and that object override Equals method from INotifyPropertyChanged interface. If Equals return true for records that actually aren't equal, than the RadGridView takes(displays) them as equal (with one and the same values), despite the fact that in underling data source they are still different.

When there is as self-referencing hierarchy, column's BestFit method does not work properly.

When AutoSizeRows = true and there is column with multiline text values, when hiding that column - shrink row height accordingly.

If there are DateTime values less than "1900-01-01", the exported file cannot be opened from MS Excel because it does not support them. 

To Do: a warning for invalid excel values before exporting.

Curently ExportToExcelML does not support DateTimeOffset types

Add error provider for AddNewRow element and options to show validation error icon and text.

Add support for pinning multiply selected rows at once.

Extend the support of Translucent Selection Rectangle on pinned rows.

Transfer the pinned status of grid's columns and rows to the exported excel file.

Add an API for easy switching to sort by DisplayMember in combo-box column.