ADD. RadGridView add functionality to support the NOT operator while filtering i.e Not Starts With, Not Equals etc

ADD. Paging functionality for RadGridView.

RadGridView crashes when it is in AutoSizeRows rows and a third level hierarchy cell is edited.

When the AddNewBoundRowBeforeEdit property of GridViewTemplate is enabled, the properties of the underline business object are not set, while the GridViewNewRowInfo is edited.

If you delete rows of the active view in tabbed child hierarchy, the new tab should be selected and the old tab should become invisible.

Currently the column virtualization is disabled in column groups view, which causes slow scrolling when using a large number of columns

The GroupRow Height cannot be changed when ColumnGroupsViewDefinition and HtmlViewDefinition are used.

The issue appears when the ViewDefinition of the control is ColumnGroupsViewDefinition, summary rows are added and grouping is performed.

If you create conditional formatting, the rows that obey the rule should not be affected if they are selected.
To support this formatting the format.ApplyOnSelectedRows property must be set to false.
Test project:
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using Telerik.WinControls.UI;
namespace Lab.Grid
{
public partial class GridConditionalFormattingForm : Form
{
private RadGridView gridView = new RadGridView();
public GridConditionalFormattingForm()
{
InitializeComponent();
gridView.Dock = DockStyle.Fill;
gridView.Parent = this;
gridView.MultiSelect = true;
DataTable data = new DataTable();
data.Columns.Add("ID");
data.Columns.Add("Name");
data.Rows.Add(1, "Name1");
data.Rows.Add(2, "Name2");
data.Rows.Add(1, "Name3");
data.Rows.Add(4, "Name4");
data.Rows.Add(1, "Name5");
gridView.DataSource = data;
}
protected override void OnLoad(System.EventArgs e)
{
base.OnLoad(e);
ConditionalFormattingObject format = new ConditionalFormattingObject("MyCondition", ConditionTypes.Equal, "1", "", true);
format.CellBackColor = Color.Red;
format.ApplyOnSelectedRows = false;
gridView.Columns[0].ConditionalFormattingObjectList.Add(format);
}
}
}

related to fitering functionality of RadGridView control
Comment: 
Refreshing the master template of RadGridView in the CellEndEdit event handler is not allowed from the current architecture of the control. Use radGridView1.TableElement.Update(GridUINotifyAction.DataChanged) instead.

The AlternatingRowColor value is restarted when the ViewDefinition is changed.

When canceling the CurrentRowChanging event and the changing row is the new row, then the click here to add new row text will not be visible anymore.

Replacing the RadTextBoxItem with RadTextBoxElement in the RadGridView editor will provide richer theming capabilities.

If you change the values of the other business objects, when one of them is changed, RadGridView's rows' values are not affected.

The issue occurs when using a BindingSource bound to a DataSet as DataSource for combo box columns in RadGridView.

RadGridView does not clear the GridSpinEditor value when navigating to another cell.

RadGridView. Incorrect behavior of arrow keys when RightToLeft is enabled.

Save\Load functionality of the control should work with ColumnGroupsViewDefinition.

When switching from a child view that does not contain rows to one containing rows, the child view size is not updated and no child rows are shown.

If you go to The Demos >> Grid View >> Performance >> Load 50,000 rows. And then drag the group to group by the first two columns, then editing cells is slow.