When RadGridView is scrolled while selecting (SelectionMode is CellSelect), the control throws exception.

1. Create a new project with RadGridView.
2. Setup self-referencing hierarchy with 1000 rows and 14 columns.
3. Run the project.
4. Scroll up and down several times.
5. Resize the window.
6. Scroll up and down again.
7. RadGridView will hang.

In particular customers want to add a button showing the excel like filter popup.

When you copy from excel & if there are some empty columns in the excel file those empty columns aren't copied.The grid simply ignores the empty columns.Just run the attached sample project and copy the content from excel file and paste on the grid.T

Closing a form in CellDoubleClick event causes NullReferenceException in RadGridView.

Filtering in self-reference hierarchy should be performed over the rows from all levels

If you dispose the grid or the form it is placed on the grid's DoubleClick, MouseDoubleClick, MouseDown, etc. events, an exception is thrown.

Add the ability to print all levels of a hierarchical RadGridView.

1. Create a new project with RadGridView and setup hierarchy with three levels.
2. Add a button and when handling its Click event call the ExpandAll method.
3. Run the project and expand the first row.
4. Click the button.

1. Create a new project with RadGridView. 
2. Setup hierarchy with two child templates.
3. Set the AutoSizeRows to true.
4. Run the project, select the second template on 5 consecutive rows.
5. Start scrolling up and down with the mouse wheel slowly.
6. Click on a child row.

FIX. RadGridView - FilterOperator.IsEqualTo and FilterOperator.IsNotEqualTo should work with null using System; using System.Data; using System.Windows.Forms; using Telerik.WinControls.Data; using Telerik.WinControls.UI; namespace Lab.Grid { public partial class GridFilterEqualNullSupport : MainForm { private RadGridView gridView = new RadGridView(); public GridFilterEqualNullSupport() { InitializeComponent(); gridView.Dock = DockStyle.Fill; gridView.Parent = this; gridView.BringToFront(); gridView.EnableFiltering = true; } protected override void OnLoad(EventArgs e) { base.OnLoad(e); DataTable table = new DataTable(); table.Columns.Add("Id", typeof(int)); table.Columns.Add("Name"); table.Columns.Add("Number", typeof(DateTime)); table.Rows.Add(1, "Ivan", DateTime.Now); table.Rows.Add(2, "Ivan", DateTime.Now.AddDays(-1)); table.Rows.Add(null, "Peter", DateTime.Now); table.Rows.Add(4, "George", null); table.Rows.Add(5, "George", null); table.Rows.Add(null, "George", null); table.Rows.Add(7, "Enzo", DateTime.Now.AddDays(-3)); table.Rows.Add(8, "Enzo", DateTime.Now.AddDays(5)); table.Rows.Add(null, "Enzo", null); table.Rows.Add(10, "Enzo", DateTime.Now.AddDays(-1)); gridView.DataSource = table; } protected override void OnButton1Click() { base.OnButton1Click(); FilterDescriptor filter1 = new FilterDescriptor("Id", FilterOperator.IsEqualTo, null); gridView.FilterDescriptors.Add(filter1); } protected override void OnButton2Click() { base.OnButton2Click(); FilterDescriptor filter1 = new FilterDescriptor("Id", FilterOperator.IsNotEqualTo, null); gridView.FilterDescriptors.Add(filter1); } protected override void OnButton3Click() { FilterDescriptor filter1 = new FilterDescriptor("Id", FilterOperator.IsEqualTo, ""); gridView.FilterDescriptors.Add(filter1); } } }

1. Open attached project and run it. 2. Click button 1 and you will see that is not apply 

The check box should be placed in the header cell (if the users wants to). Additionally it should be able to control both one level and hierarchy
Resolution: 
You need to set the EnableHeaderCheckBox property to true. Please refer in help article for more information: http://www.telerik.com/help/winforms/gridview-columns-gridviewcheckboxcolumn.html

Use the ticket project:

- type in filtercell T2 the following text: test
- make no commit of the filter cell!
- click directly on the radbutton of the ribbonbar
- click in the filter cell of T2
- click in grid
- click in filter cell of T2
- click in grid

1. Create a new project with RadGridView and bind it.
2. Run the application.
3. Double click on a column to best fit.
4. Double click the same column twice

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();
  }

virtual filtering operation - detached filter GUI to support filtering in external datasource or possibility to replace the data in RadGridView control when new filter is applied.

Steps to reproduce.
1. Add a RadGridView to a form
2. Add a decimal column and set its DataType to any unsigned integer type (uint16, uint32, uint64)
3. Add some values and export the grid with ExportToExcelML
4. You will see that in the exported grid the cells in the column would have "0" as a value.

I have a form with a RadGridView that's bound to an list of Custom Objects. Each custom object has a property that is also a list of custom objects of a different class. I added a child template to the main grid for this property and created a relation between the two. Everything displays nicely and I can add new rows to the main grid. However, when I attempt to add a new row to one of the child grids, the row does not get added.

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;

1. By default I cannot paste data on the radgrid if I don't have any rows created.For e.g in a grid with no rows I cannot paste data on the radgrid.Is there any setting to chane this behavior?
2. When I copy data from excel and paste in the grid the column order has to be the same as that in the excel.For e.g in the excel the columns are A,B,C and in the grid the order is C,B,A..Then 'paste' copies A' data to C and C's data on excel to column A on the grid.
Is it possible to trap the pasting programmatically to paste A's data in excel to A's column of the grid.ie. one to one. irrespective of the column order mismatch between the excel and the grid?
Also I should be able to paste data to an empty grid by identifying how many rows needs to be created.