How to unbind properties by using razor pages-CodePudding

I use razor pages.
I have this property

[BindProperty]
public ProductDto CreateProduct { get; set; }

In OnPost Method, I check ModelState.IsValid and everything is ok.
But when I send a request to my handlers that are next to my OnPost method the validation will be false.
The reason is ModelState check my handler inputs and also CreateProduct that used bind property attribute, how can I unbind property that use BindProperty attribute when I send request to the hanlders.

public IActionResult OnPostAddBrand(AddBrandDto model)
{
    if (!ModelState.IsValid)
    {
        // AddBrandDto is valid but I got here.
        Return Json(false);
    }
    // todo: SaveBrand
    Return Json(true);
}

I know if I don't use BindProperty attribute and get the object from the method inputs, problem will be solved, like this:

public ProductDto CreateProduct { get; set; }
public async Task<IActionResult> OnPost(ProductDto createProduct)
{
}

But is there any other way to solve this problem.

CodePudding user response：

You can use ModelState.Remove to remove properties from the ModelStateDictionary e.g.

ModelState.Remove("Password");

If you want to "unbind" a complex property, you can use reflection to remove its properties:

foreach(var prop in ProductDto.GetType().GetProperties())
{
    ModelState.Remove($"{nameof(ProductDto)}.{prop.Name}");
}