public override object EditValue(ITypeDescriptorContext context, System.IServiceProvider provider, object value)
{
if (context != null && context.Instance != null && provider != null)
{
FrequencyEditorForm dlg = new FrequencyEditorForm(context.Instance as ChannelTV);
if(dlg.ShowDialog() == DialogResult.OK)
return (context.Instance as ChannelDVB).Frequency;
}
return null;
}