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[SOLVED]How to use cookies in .NET Core 3.1 MVC?

You only need to write these 3 methods in the controller. (Note that it must be written in the controller)

protected string GetCookies(string key)
    HttpContext.Request.Cookies.TryGetValue(key, out string value);
    if (string.IsNullOrEmpty(value))
        value = string.Empty;
    return value;
public void SetCookies(string key, string value, int days = 30)
    HttpContext.Response.Cookies.Append(key, value, new CookieOptions
        Expires = DateTime.Now.AddDays(days)
protected void DeleteCookies(string key)

I dare not say that this is the best way, but I want to say that it is effective.

This article was last edited at 2020-10-24 22:45:27

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