Add the hyperlink cell's row and column to the HyperlinkOpening event arguments.

RadGridView loses the multiple selected rows when it has a sorted column and a cell value is edited.

1. Create a new project and open a form at design time
2. Add RadGridView
3. Add a GridViewDecimalColumn
4. Set its TextAlignment property to MiddleLeft
5. Run the application

I still have the performance problem. I have attached the same project extende by a new button/(function to create a new group with one root entry and 100 sub-entries. This takes a while due to the log of the data context, but what really takes me off is the performance of the grid when opening this root entry. On my machine (i5, 4GB ram) it takes about 5-6 seconds for the sub-structure to open. The zip also contains an old version of the program and in the bin/debug folder you can find the "RadTest.exe" (as opposed to the RadTest2.exe), wich will open the sub-structure in no time.
So - there must be something wrong with my way of working the grid.

To reproduce: Run the program, click the "Generate" Button and enter a name for the new group. This will create 101 new entries (1 root, 100 subs), taking about 15-20 secs (which is ok, as I said above).
Then open the "RootEntry" within the group -> takes 5-6 seconds. When the subentries are visible, scrolling the grid vertically is really slow as well.

The summary row values are not updated in the following scenario:
1. Group by one column and expand one group row.
2. Remove this grouping.
3. Group by second column in a way it creates a group with the same value as the one of the previously expanded group.

1. Create a new project with RadGridView
2. Enable the multiple row selection and set the second column to be read only
3. Run the project
4. Start selecting from the "add new row" and the second column
5. Move the mouse down
6. Release the mouse button on the second column

The ValueChanged event of RadGridView is not fired when you select a new item of RadDropDownListEditor in AutoCompleteMode.Append.

Setting RadGridView CurrentRow to a child row should make the control scroll to this row. This is the control behavior when setting row from the MasterTemplate as CurrentRow.

IMPROVE. RadGridView - expose the color dialog form in GridColorPickerElement

1. Load the ControlDefault theme in Visual Style Builder
2. Edit the cell style and try to disable the cell border when RadGridView is not focused and the HideSelection property is set to true.
3. You cannot because the HotTracking property is not updated correctly for grid cells.

Workaround: 
void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
    if (e.CellElement.IsCurrent && !e.CellElement.RowElement.HotTracking)
    {
        e.CellElement.DrawBorder = false;
        e.CellElement.DrawFill = false;
    }
    else
    {
        e.CellElement.ResetValue(LightVisualElement.DrawFillProperty, ValueResetFlags.Local);
        e.CellElement.ResetValue(LightVisualElement.DrawBorderProperty, ValueResetFlags.Local);
    }
}

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

1. Create a new project and setup hierarchy
2. Add a large number of rows as child rows to the last row at first level
3. Run the project and try to expand the last row

Currently there is SortDirectionArrowPrimitive allowing you to set an arrow for both states, but this way you cannot use custom image for the different sort operations.

The GridViewBrowseColumn's editor could have two modes - OpenFileDialog and FolderBrowserDialog.

There is a bug regarding the filtering of the grid, in the GridViewComboBoxColumn.
The filtering result displays wrong value.  
The bug accurse when:
   - Select a value form a GridViewComboBoxColumn.
   - Clear Filtering of the grid.
   - write a new value in the filtering GridViewComboBoxColumn cell, before living the cell.
The grid is filtered with the previous selected value.  
Note: the bug accurse only when the ReadOnly Property of column is off.

Allow hiding of whole group in ColumGroupsViewDefinition by adding Visibility property to ColumnGroup class.

The horizontal scrollbar of the control does not behave correctly when there are several pinned columns and their width is larger than the visible area of RadGridView.

ADD. RadGridView - add support for sorting GridViewComboBoxColumn by Display or Value member in unbound mode.

When you select the cells of a pinned column and this column overlaps the next column, the cells from the next column are selected too.

There are 2 main problems in this functionality:
A) User has to click the filter check box twice to get the state changed for the first time. That is unacceptable, It must work from first click from first click check box must change its state.
B) Parameters of FilterChanging event are absolutely useless and what is worse they even lie about real state of the filter.
C) If I want to edit in column editor FilterDescriptor property of the column some maybe old dialog window appears because whatever I set here it does not change anything.