Disallow field change

[Andrea]

Hello,

I'm creating a DataFilter showing a premade expression and not allowing to Add or Remove other expressions or groups.

I'd like also to disable the possiblity to click on a field and change it, I want to keep them fixed.

I've seen the AllowEdit property, but it's too drastic, since it does not allow even to change the value to look for.

Where should I look?

Thank you!

[Hristo]

Hello Valerio,

You can handle the Editing event and cancel it for the DataFilterFieldEditorElement object. In  a similar way, you can also cancel the edit operation for the other elements as well: 

private void RadDataFilter1_Editing(object sender, TreeNodeEditingEventArgs e)
{
    if (sender is DataFilterFieldEditorElement)
    {
        e.Cancel = true;
    }

    //Cancels editing of the filter operator
    if (sender is DataFilterOperatorEditorElement)
    {
        //e.Cancel = true;
    }

    //Cancels editing of the value element
    if (sender is DataFilterValueEditorElement)
    {
        //e.Cancel = true;
    }
}

You can also check the Events documentation article in the Editing section: https://docs.telerik.com/devtools/winforms/datafilter/editing/events.

Regards,
Hristo
Progress Telerik

[Andrea]

Great!

Thanks Hristo!