Comment; We still don't have such property in the Templates.
There should be AllowMultiColumnSorting proeprty at GridViewTemplate.

If the dropdownlist editor is opened and closed quickly, it produces an exception. The timer of the RadListElement should be reset when the editor is closed and then reopened.

If you have an object that has a property that returns another type of object and you want to choose the value of this property by getting it from a GridViewComboBoxColumn, you will notice that currently this is not possible.
COMMENT: This scenario is not possible. However we added support for subproperty binding in GridViewComboBoxColumn. For example:
FieldName = "MatrixParameter.ID"

Manually generated hierarchy does not contain data if the Relation is defined before setting the data source to the parent level.

If your screen scaling is set to 125% the location of the editors that appear in the Composite Filter Form is not correct.

Let's have a RadGridView that is RightToLeft.Yes with at least three columns. In the CellFormatting event set RightToLeft.No to the CellElements that belong to the middle column. Now start dragging the last column (first in RightToLeft.Yes) so that it becomes bigger and its size goes beyond what RadGridView gives as available estate area. You will notice that the CellElements that are RightToLeft.No go in the opposite direction.

Resolution: Currently, the correct way to achieve a grid with RightToLeft.Yes while some of its cells are RightToLeft.No is to use a custom column with custom cells:

 public class MyGridViewDecimalColumn : GridViewDecimalColumn
    {
        public MyGridViewDecimalColumn()
            : base()
        {

        }

        public MyGridViewDecimalColumn(string fieldName)
            : base(fieldName)
        {
        }

        public MyGridViewDecimalColumn(string fieldName, string uniqueName)
            : base(uniqueName, fieldName)
        {
        }

        public override Type GetCellType(GridViewRowInfo row)
        {
            if (row is GridViewDataRowInfo)
            {
                return typeof(MyGridDecimalCellElement);
            }

            return base.GetCellType(row);
        }
    }

    public class MyGridDecimalCellElement : GridDataCellElement
    {
        public MyGridDecimalCellElement(GridViewColumn col, GridRowElement row)
            : base(col, row)
        {

        }

        protected override Type ThemeEffectiveType
        {
            get
            {
                return typeof(GridDataCellElement);
            }
        }

        protected override Telerik.WinControls.Primitives.TextParams CreateTextParams()
        {
            Telerik.WinControls.Primitives.TextParams parameters = base.CreateTextParams();
            parameters.rightToLeft = false;
            return parameters;
        }

        public override bool IsCompatible(GridViewColumn data, object context)
        {
            return base.IsCompatible(data, context) && data is GridViewDecimalColumn;
        }
    }

The should be able to operate with a threestate checkbox in RadGridView.

It will be a nice addition to the GridViewImageColumn if we add an ImageAlignment property.

One may want to perform a search operatior over the records of RadGridView instead of filtering them. The search should be incremental and should scroll to the first position that contains a record that matches the search criteria.

Column Chooser form's BackColor cannot be set trough Theme.

RadGrid's HierarchyRowTraverser throws an exception when all levels are expanded and filter is applied
Please, tests with the attached project.

Run time error occurs when setting AutoSuggestMode to Suggest only in GridViewComboBoxColumn Editor
Steps to reproduce:

GridViewComboBoxColumn cmb = new GridViewComboBoxColumn(); 
cmb.Name = "Test"; 
cmb.HeaderText = "Test"; 
cmb.DataSource = dt;
cmb.ValueMember = "Id"; 
cmb.DisplayMember = "Name"; 
cmb.FieldName = "Test"; 
cmb.Width = 100;
radGridView1.Columns.Add(cmb);
radGridView1.Columns["Test"].ReadOnly = false;
radGridView1.Columns["Test"].IsVisible = true;
cmb.DropDownStyle = RadDropDownStyle.DropDown;
cmb.AutoCompleteMode = AutoCompleteMode.Suggest;

TAB navigation does not work properly with Grid TimePickerCell. The timepicker cell gets the focus only for a moment, and the grid immediately sets the focus to the next cell.

 public Form1()
 {
            radGridView1.Columns.Add(new GridViewDateTimeColumn());
            radGridView1.EditorRequired += new EditorRequiredEventHandler(radGridView1_EditorRequired);
    
 }

 void radGridView1_EditorRequired(object sender, EditorRequiredEventArgs e)
 {
      e.Editor = new GridTimePickerEditor();
  }

The following works;
	
GridGroupByExpression groupBy = new GridGroupByExpression();
groupBy.Expression = "[Status] format \"Current {0}: {1}\" Group By Status DESC";
this.fundsGrid.MasterGridViewTemplate.GroupByExpressions.Add(groupBy);

The following doesnt work

GridGroupByExpression groupBy = new GridGroupByExpression();
groupBy.Expression = "[Status] format \"Current {0}: {1}\" Group By Status desc";
this.fundsGrid.MasterGridViewTemplate.GroupByExpressions.Add(groupBy);

related to RadGridView AutoSizeRows property and layout logic for row height

When user types in non-numeric input into filter cell, exception is thrown. Expected behavior would be that grid just ignores such a value.

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

Sub-Properties binding - nullable support, initialization order

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.

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.