How to prevent loosing IFormFile data on postback in ASP.NET core 2 razor page?

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How to prevent loosing IFormFile data on postback in ASP.NET core 2 razor page?



I'm using IFormFile type to save uploaded file to my database. It works fine when I capture the file at first call of OnPost method. But when it needs a postback (e.x. ModelState.Isvalid == false) then I loose data on second call of OnPost method even using BindProperty attribute. How can I fix this?


IFormFile


OnPost


ModelState.Isvalid == false


OnPost


BindProperty



Property definition:


[BindProperty]
public IFormFile Photo { get; set; }



Thanks in advance for taking your time.









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