Sub-Properties binding - nullable support, initialization order

When the form loads, the rows visible area have the expander, but when scrolling down the list or resizing the form to show the hidden rows, the expander is not shown.

I have noticed some strange behaviour when adding and editing records in a hierarchical radGridview.

I have attached a Visual Studio Sample solutions to help illustrate this issue.

Follow these steps to recreate the issue:

1.Run the attached sample solution. Form1 will load with a radGridview containing hierarchical data.
2. Expand the region record to show it's child records.
3. Click on "Click here to add new row" directly underneath the Field_Value column and enter any value.
4. Try and click on the Operator column on the same row to add a value. You will notice that nothing happens.
5. Expand the Sub_Region record to show it's child records.
6. Click on "Click here to add new row" directly underneath the Operator column and enter any value.
7. Try and click on the Field_Value column on the same row to add a value. You will notice that nothing happens.

I have noticed that this behaviour happens not only when you are adding a new row, but in existing rows as well. If you move around between records after expanding the nodes this issue happens allot (but not always). If you try a few different scenarios by collapsing and expanding the nodes and adding or editing records in different orders you should be able to reproduce the error allot. If you use the TAB key then it does not seem to be an issue, only when you are trying to click into the adjacent column on the same row. It does not seem like correct behaviour. Is this a bug or am I doing something wrong? Please let me know if there is a way to correct this behaviour?

To reproduce the issue:
1. Use the designer to set ShowRowHeaderColumn property to 'false'.
2. Set the property value back to 'true'.
The serialized value of the property will remain 'false'.

The last RadGridView column has incorrect cell spacing.

ADD. RadGridView - add new column type, where each cell has a drop down which displays a calculator (GridViewCalculatorColumn)

Selection should not be processed while scrolling the control and the mouse hovers RadGridView rows.

Problem: When adding a new row using the RadGridView control, when the row is actually added to the control (after the initial editing in the new row area), two rows actually appear and they both appear to be bound to the same object.

The attached example is in vb, but I believe I did the same thing in c#.  Also, I believe the same occurs whether you are using .NET 3.5 or .NET 4.

This is not a problem using a standard datagridview.  It exists with RadGridView.  As such, I thought the problem was limited to RadGridView and not OpenAccess, but I am not really sure which is the culprit.  

My sample uses the Cars table copied from the SofiaCarRental example.

I have used the older Reverse Mapped style OA project.  I have seen this behavior since 2010.Q3, but not sure when it really started.

The HeaderText of the RadGridView columns is not properly serialized in the resource file for the corresponding language.

The RadGridView ScrollToRow functionality does not work correctly when the target row is in child hierarchy view.
COMMENT: Actually this is not a bug. The described method should check whether the lastRow field is expanded. If it is not expanded, the method should expand the row, or it should ignore it.

- Create a new project containing RadGridView
- Build hierarchy with large text data in cells
- Set the AutoSizeRows property to true and AutoSizeColumnMode to Fill
- Run the project, scroll down and try to click on a cell

The issue appears when the RadGridView control has a Multiline GridViewTextBoxColumn and applied AutoSizeRows functionality.

Row reorder feature not work in unbound mode RadGridView with self-reference hierarchy

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

When I binded such datatable to GridView it freezed during expand tree node. I also test it with RadTreeView and it works fine.

When the RadGridView is bind to a data source, which contains a flagged enum, an instance of GridViewComboBoxColumn should be added and its editor should be checked drop down list.

When you define a data source which contains display value for null value, the display value does not appear in the column's cells.

The BestFitColumns algorithm should be performed for columns groups in ColumnGroupsViewDefinition.

The mouse drag selection does not work when the SelectionMode of the control is CellSelect and RowSpacing is defined.

In some particular cases it is possible to experience a undesired scroll behaviour in RadGridView with lots rows. When clicking on first or second grid's row, it scrolls on row down and the first row goes out of sight.