RichHtmlField.AllowDragDrop property

SharePoint 2013

Gets or sets a Boolean value that indicates if the drag and drop of elements is supported for the field.

Namespace:  Microsoft.SharePoint.Publishing.WebControls
Assembly:  Microsoft.SharePoint.Publishing (in Microsoft.SharePoint.Publishing.dll)

public bool AllowDragDrop { get; set; }

Property value

Type: System.Boolean
The default value is true.

When set to false, the image field does not allow users to drag and drop elements into the HTML field.