How to make Block Name is editable in Preview?

Hi everyone,

I have an issue, I want to edit the block name in Preview in edit mode.

I tried these lines but the Block Name is still not editable:

<h3 @Html.EditAttributes(x => (x as IContent).Name)>
    @Html.DisplayFor(x => (x as IContent).Name)</h3>

or

<h3>
   @Html.PropertyFor(x => ((IContent)x).Name)</h3>

The screenshot

Can anyone help me? Or if the Block Name is editable in Preview, can anyone explain help me?

Thanks,