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.

If you want to cancel CurrentRowChanging (e.Cancel=true), when you click on next row's check box column, it throws the event twice and the next rows' check box has been improperly checked.

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

Expand All method does not work as expected if there is grouping applied.

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.

Add support for drag and drop operations in column chooser when ColumnGroup view is applied.

Default sort in excel-like filtering menu always is as text. Should be appropriate for given data type (for example numeric or DateTime)

Curently ExportToExcelML does not support DateTimeOffset types

In the add new row element there is some cells€™ values, which are set through code (programmatically). 
However, if there is not at least one cell, which was manually edited (changed its value), the row cannot be committed.

Include an easy way to clear selection and current row if the data source changed. Currently, it sets the first row as current and there is not a clear way to avoid this on every data source change.

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

Add support for filtering guid type of values

Add support for pinning multiply selected rows at once.

Extend the support of Translucent Selection Rectangle on pinned rows.

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

Print support for RadGridView.

You should be able to bind GridViewColorColumn to a text column.