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[Zerka]

Hi

I want to hide the system context menu which is visible when cell is in edit mode and user presses right button. I come to know that it can be disable on EditingControlShowing event of DataGridView. But as this event is not available in RadGridView, How can I disable or hide this context menu. Any help would be appreciated!

Regards!

[Richard Slade]

Hello Michael,

In order to do this, you could create a custom cell for the editor. Here is a very basic example

Public Class TextEditor
    Inherits BaseGridEditor
    Private radTextBox As RadTextBox

    Public Sub New()
        radTextBox = New RadTextBox()
        radTextBox.TextBoxElement.TextBoxItem.HostedControl.ContextMenu = New ContextMenu()
        radTextBox.TextBoxElement.TextBoxItem.SelectionStart = 0
    End Sub

    Private Sub radTextBox_TextChanged(ByVal sender As Object, ByVal e As EventArgs)
        OnValueChanged()
    End Sub

    Protected Overrides Function CreateEditorElement() As RadElement
        Return New RadHostItem(radTextBox)
    End Function

    Public Overrides Property Value() As Object
        Get
            Return radTextBox.Text
        End Get
        Set(ByVal value As Object)
            radTextBox.Text = value.ToString()
        End Set
    End Property
End Class

Public Class MyTextEditorElement
    Inherits RadTextBoxElement

    Public Sub New()
        Me.CanFocus = True
    End Sub
    Protected Overrides ReadOnly Property ThemeEffectiveType() As Type
        Get
            Return GetType(RadTextBoxElement)
        End Get
    End Property
    Protected Overrides Sub OnPropertyChanged(ByVal e As RadPropertyChangedEventArgs)
        MyBase.OnPropertyChanged(e)
    End Sub
End Class

and then handle the EditorRequired event

Private Sub RadGridView1_EditorRequired(ByVal sender As Object, ByVal e As Telerik.WinControls.UI.EditorRequiredEventArgs) Handles RadGridView1.EditorRequired
    If e.EditorType Is GetType(RadTextBoxEditor) Then
        e.EditorType = GetType(TextEditor)
    End If
End Sub

for more information on Custom Cells, please take a look at this documentation
hope that helps
Richard

[Richard Slade]

Hello,

Did this help? If so please remember to mark as answer. If you need more assistance, please let me know.
Thanks
Richard

[Zerka]

Hello Richard

Sorry, I had been busy with some other high priority tasks. Yes It works. But in this way, I will lose some other features of RadTextBox. Also I have differnet kind of columns in my grid and hence different editors, so this requires a lot of code just for hiding this default system context menu.

Thanks 

Regards  

[Martin Vasilev]

Hi Michael,

I just would like to suggest another idea to remove the default context menu, which could match your scenario better. You can do that by accessing the TextBox item in the standard RadTextBoxEditor. Please consider the following code as example:

void radGridView1_CellBeginEdit(object sender, GridViewCellCancelEventArgs e)
{
    RadTextBoxEditor editor = e.ActiveEditor as RadTextBoxEditor;
    if (editor != null)
    {
        RadTextBoxEditorElement editorElement = (RadTextBoxEditorElement)editor.EditorElement;
        (editorElement.HostedControl as TextBox).ContextMenu = new ContextMenu();
    }
}

I hope this helps. Let me know if you have any additional questions.

Best wishes,
Martin Vasilev
the Telerik team