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RadGridView filter crashes due to multi select and fast clicking

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Nathan asked on 02 Jul 2015, 03:49 PM

I am having an issue with the filter option crashing with radgridview.

To reproduce, create a radgridview as I describe below.

Run the program

Quickly click around in the cells of the table a few times, making sure to drag your mouse a bit so to select a few rows on some of the clicks.

Then quickly click the filter. (sometimes takes a few tries)

I get the following error


System.NullReferenceException: Object reference not set to an instance of an object. 

   at Telerik.WinControls.UI.GridRowBehavior.DoMultiFullRowSelect(GridCellElement currentCell, Point currentLocation)
   at Telerik.WinControls.UI.GridRowBehavior.DoMouseSelection(GridCellElement currentCell, Point currentLocation)
   at Telerik.WinControls.UI.GridRowBehavior.ProcessMouseSelection(Point mousePosition, GridCellElement currentCell)
   at Telerik.WinControls.UI.GridRowBehavior.OnMouseMove(MouseEventArgs e)
   at Telerik.WinControls.UI.BaseGridBehavior.OnMouseMove(MouseEventArgs e)
   at Telerik.WinControls.UI.RadGridView.OnMouseMove(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseMove(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at Telerik.WinControls.RadControl.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at BeaconQuerySource.Program.Main(String[] args)


To create the grid do the following.

 Make a RadGridView with the following options (not sure if all are important but the filter and multiselect are) 

this.gridConnectedSessions.MasterTemplate.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;

this.gridConnectedSessions.MasterTemplate.EnableAlternatingRowColor = true;
this.gridConnectedSessions.MasterTemplate.EnableFiltering = true;

this.gridConnectedSessions.MasterTemplate.MultiSelect = true;

(leave the rest as the default options)

Add 3 columns to the grid

Add 5 rows of data to the grid (I used the following)

radGridView1.Rows.Add("test2", "test2", "test2");
radGridView1.Rows.Add("test3", "test3", "test3");
radGridView1.Rows.Add("test4", "test4", "test4");
radGridView1.Rows.Add("test5", "test5", "test5");


Any help would be appreciated, thank you.

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Dess | Tech Support Engineer, Principal
Telerik team
answered on 06 Jul 2015, 02:08 PM
Hello Nathan,

Thank you for writing.

Following the provided information I have prepared a sample project and successfully reproduced the NullReferenceException. I have logged it in our feedback portal. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - feedback item.

I have also updated your Telerik points.

Currently, the possible solution that I can suggest is to use a custom filter row behavior:
public Form1()
    this.radGridView1.MasterTemplate.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
    this.radGridView1.MasterTemplate.EnableAlternatingRowColor = true;
    this.radGridView1.MasterTemplate.EnableFiltering = true;
    this.radGridView1.MasterTemplate.MultiSelect = true;
    for (int i = 0; i < 3; i++)
        this.radGridView1.Columns.Add("Col" + i);
    radGridView1.Rows.Add("test1", "test1", "test1");
    radGridView1.Rows.Add("test2", "test2", "test2");
    radGridView1.Rows.Add("test3", "test3", "test3");
    radGridView1.Rows.Add("test4", "test4", "test4");
    radGridView1.Rows.Add("test5", "test5", "test5");
    BaseGridBehavior gridBehavior = radGridView1.GridBehavior as BaseGridBehavior;
    gridBehavior.RegisterBehavior(typeof(GridViewFilteringRowInfo), new CustomGridFilterRowBehavior());
public class CustomGridFilterRowBehavior : GridFilterRowBehavior
    protected override bool ProcessMouseSelection(Point mousePosition, GridCellElement currentCell)
        return false;

I hope this information helps. Should you have further questions, I would be glad to help.
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Dess | Tech Support Engineer, Principal
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