Restrict to select one row only at a time

[nishan]

    Dear Telerik.

 

Is there a way to restrict to select one row only at one time?

Thanks,

 

Nishan.

[Dess | Tech Support Engineer, Principal]

Hello Nishan,

Thank you for writing. 

In order to prevent multiple cell selection in RadPivotGrid with MouseMove, you can use the following code snippet:

public class CustomPivot : RadPivotGrid
{
    public override string ThemeClassName
    {
        get
        {
            return typeof(RadPivotGrid).FullName;
        }
    }

    protected override RadPivotGridElement CreatePivotGridElement()
    {
        return new CustomRadPivotGridElement();
    }
}

public class CustomRadPivotGridElement : RadPivotGridElement
{
    protected override Type ThemeEffectiveType
    {
        get
        {
            return typeof(RadPivotGridElement);
        }
    }

    public override bool ProcessMouseMove(MouseEventArgs e)
    {
        RadElement element = this.ElementTree.GetElementAtPoint(e.Location);
        PivotCellElement cellElement = element as PivotCellElement;

        FieldInfo fi = typeof(RadPivotGridElement).GetField("selecting", BindingFlags.Instance | BindingFlags.NonPublic);
        bool selecting = (bool)fi.GetValue(this);
        if (selecting)
        {
            FieldInfo fi2 = typeof(RadPivotGridElement).GetField("selectionTimer", BindingFlags.Instance | BindingFlags.NonPublic);
            Timer selectionTimer = fi2.GetValue(this) as Timer;
            if (cellElement != null)
            {
                selectionTimer.Stop();
                this.SelectCell(cellElement, false, false);

                foreach (PivotRowElement row in this.PivotRowsContainer.Children)
                {
                    row.Synchronize();
                }
            }
            else
            {
                int selectionDirection = 0;
                Rectangle rect = this.PivotRowsContainer.ControlBoundingRectangle;

                if (e.X < rect.Left)
                {
                    selectionDirection |= (int)Telerik.WinControls.ArrowDirection.Left;
                }
                if (e.X > rect.Right)
                {
                    selectionDirection |= (int)Telerik.WinControls.ArrowDirection.Right;
                }
                if (e.Y < rect.Top)
                {
                    selectionDirection |= (int)Telerik.WinControls.ArrowDirection.Up;
                }
                if (e.Y > rect.Bottom)
                {
                    selectionDirection |= (int)Telerik.WinControls.ArrowDirection.Down;
                }

                selectionTimer.Tag = selectionDirection;

                if (!this.PivotRowsContainer.ControlBoundingRectangle.Contains(e.Location))
                {
                    selectionTimer.Start();
                }
                else
                {
                    selectionTimer.Stop();
                }
            }

            return false;
        }
        return base.ProcessMouseMove(e);
    }
}

I hope this information helps. Should you have further questions I would be glad to help.

Regards,
Dess
Telerik