属性值在 Razor 页面中重置 OnPost

Question

I am trying to keep the values of my property for my OnPost method. I set the values in the OnGet method, when I change from the last page to the current. Here's the HTML for the button that redirects to the page with my property:

<a class="btn" type="button" asp-page="CreateDate" asp-route-dateString="@Model.model.StartDate.AddDays(i).ToString("yyyy-MM-dd")"><i class="fa fa-plus-square"></i></a>

Here's the OnGet method:

        [BindProperty]
    public DateTime eventDate { get; set; }

    public void OnGet(string dateString)
    {
        var stringToDate = DateTime.Parse(dateString);
        eventDate = stringToDate;
    }

Here's the OnPost:

        public IActionResult OnPost()
    {
        Date date = new Date();
        date.Date1 = eventDate;
        date.Title = Request.Form["Title"];
        date.Description = Request.Form["Description"];

        dateService.AddDate(date, userID);

        return RedirectToPage("Calendar");
    }

And lastly the HTML for the OnPost method:

<div>
<h5 class="pageTitle">Udfyld formular for at oprette et event for denne dato: @Model.eventDate.ToString("D")</h5>
<form method="post">
    Navn på event:
    <br />
    <input name="Title" type="text" class="form-control input-lg" required autofocus />
    <br />
    Beskrivelse:
    <br />
    <input name="Description" type="text" class="form-control input-lg" required autofocus />
    <br />
    <input type="submit" value="Opret Event" class="btn btn-primary">
</form>

I am still very new, so I'm just (hopefully) looking for a simple answer. Thanks!

Answer 1

As you redirect to Calendar page in your OnPost method,you will go to the Calendar page,so you can pass property to the Calendar page and keep property in Calendar PageModel.

OnPost method:

public IActionResult OnPost()
    {
        Date date = new Date();
        date.Date1 = eventDate;
        date.Title = Request.Form["Title"];
        date.Description = Request.Form["Description"];

        dateService.AddDate(date, userID);

        return RedirectToPage("Calendar",date);
    }

Calendar.cshtml.cs:

public class CalendarModel : PageModel
    {
        [BindProperty]
        public Date date { get; set; }
        public void OnGet(Date Date)
        {
            date = Date;
        }
    }