Hi:
I found thesolution,andalsofoundhowtochangethetexttothefiltermenu items
Private Sub GridViewGeneral_ContextMenuOpening(ByVal sender As System.Object, ByVal e As Telerik.WinControls.UI.ContextMenuOpeningEventArgs) Handles GridViewGeneral.ContextMenuOpening
For i As Integer = 0 To e.ContextMenu.Items.Count - 1
If e.ContextMenu.Items(i).Text = "No filter" Then
e.ContextMenu.Items(i).Text = "No Filtrar"
ElseIf e.ContextMenu.Items(i).Text = "Contains" Then
e.ContextMenu.Items(i).Visibility = ElementVisibility.Collapsed
End If
Next