How to Move the Current Row with Arrow Keys while RadGridView is in Edit Mode

Updated over 6 months ago

Environment

Product Version	Product	Author
2023.2.718	RadGridView for WinForms	Desislava Yordanova

Description

When the editor in RadGridView is active, it is expected to handle the user's input. For example, when a spin editor is activated in a decimal column, pressing the up/down arrow keys increases/decreases the editor's value. If you want to skip handling the up/down arrows by the editor and move the current row in the respective direction, you can have a look at the following code snippet which result is illustrated below:

Solution

When the editor is initialized, we can handle the keyboard processing and execute custom logic when the up/down arrow keys are pressed. In addition, the default logic for increasing/decreasing the value in the spin editor should be restricted:

C#

        public RadForm1()
        {
            InitializeComponent();
            this.radGridView1.CellEditorInitialized += RadGridView_CellEditorInitialized;
        }

        private void RadGridView_CellEditorInitialized(object sender, Telerik.WinControls.UI.GridViewCellEventArgs e)
        {
            var spinEditor = e.ActiveEditor as GridSpinEditor;
            if (spinEditor != null)
            {
                var element = spinEditor.EditorElement as RadSpinEditorElement;
                element.InterceptArrowKeys = false;
                element.KeyDown -= element_KeyDown;
                element.KeyDown += element_KeyDown;
            }
        }

        private void element_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyData == Keys.Down)
                this.radGridView1.GridNavigator.SelectNextRow(1);
            else if (e.KeyData == Keys.Up)
                this.radGridView1.GridNavigator.SelectPreviousRow(1);
        }
        

VB.NET

    Sub New() 
        InitializeComponent()

        AddHandler Me.RadGridView1.CellEditorInitialized, AddressOf RadGridView_CellEditorInitialized

    End Sub

    Private Sub RadGridView_CellEditorInitialized(sender As Object, e As Telerik.WinControls.UI.GridViewCellEventArgs)
        Dim spinEditor = TryCast(e.ActiveEditor, GridSpinEditor)
        If spinEditor IsNot Nothing Then
            Dim element = TryCast(spinEditor.EditorElement, RadSpinEditorElement)
            element.InterceptArrowKeys = False 
            RemoveHandler element.KeyDown, AddressOf element_KeyDown
            AddHandler element.KeyDown, AddressOf element_KeyDown
        End If
    End Sub

    Private Sub element_KeyDown(sender As Object, e As KeyEventArgs)
        If e.KeyData = Keys.Down Then
            Me.RadGridView1.GridNavigator.SelectNextRow(1)
        ElseIf e.KeyData = Keys.Up Then
            Me.RadGridView1.GridNavigator.SelectPreviousRow(1)
        End If
    End Sub  
    

See Also

• Handling Editors' events
• Editing Lifecycle