We want to create a new attribute[BindProperty] which means that the property should be model bound.

We'll have an override via a propertybool SupportsGet which enables binding of the properties for GET requests.

Placing the attribute on a class means that it applies to all public properties in the class. This has overriding behavior - the attribute on the property wins. There is no way toun-bind a property if you use the attribute at the class level.

This new attribute should go in the RazorPages namespace. Features likeSupportsGet aren't relevant to controllers.

Examples:

public class Index : PageModel{    [BindProperty]    public string CustomerName { get; set; } // This property is only bound for non-GET requests}public class Search : PageModel{    [BindProperty(SupportsGet = true)]    public string Query { get; set; } // This property is bound for all requests}[BindProperty(SupportsGet = true)]public class Search : PageModel{    public string Query { get; set; } // This property is bound for all requests    public bool ImFeelingLucky { get; set; } // This property is bound for all requests}