I don't know if that might help you or it is good practice for MVVM flavours like Razor, but inside ASP.NET Core API projects I often use custom global DI'ed services, like

public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSingleton<IMyService, MyService>();

    ...

     services.AddMvc();
}

You can exchange data between your IndexModel and a CustomModel eg. by setting it like

public class CustomModel : PageModel
{
   public IMyService _myService;

   public CustomModel(IMyService myService)
   {
       _myService = myService;
   }

   public async Task<IActionResult> OnPostAsync(...)
   {
        ...

        _myService.SetDataOrSometing(...);

        ...

        return RedirectToPage();
   }
}

and retrieving it like

public class IndexModel : PageModel
{
    public IMyService _myService;

    public IndexModel(IMyService myService)
    {
        _myService = myService;
    }

    public void OnGet()
    {
        var data = _myService.GetDataOrSomething();
    }
}

From here you can also use an ObserveableCollection and register events to get the updates down to your PageModels.

IMHO this is a way to pass objects from one page to another with a clean separation of concerns.

State Management In Razor Pages, For example, if you define an id (optional) routing constraint in the Razor Page: @page "{id?}" To redirect to that view passing a specific id , just do: return RedirectToPage("PageName", new { id = 3 }); In this folder, create new Razor Page named Index as below: NET Core Razor PagesPass Object from Page Model to Razor Page in ASP.

You can pass parameters to specified handlers in the page model class, like this:

return RedirectToPage("Orders", "SingleOrder", new {orderId = order.Id});

Where the page model class method has this signature:

public void OnGetSingleOrder(int orderId)

If you are passing an object, you can pass the object directly, but in my experience any child objects are not populated.

razor pages two way binding, 1 Answer1. Active Oldest Votes. 3. BindProperty allow us to have a two way binding but you will also need an input. This works like this. You set the value of the BindProperty and you create an input which will host the value of the property. <input asp-for="Source" class="form-control" />. 1 Answer1. Active Oldest Votes. 3. BindProperty allow us to have a two way binding but you will also need an input. This works like this. You set the value of the BindProperty and you create an input which will host the value of the property. <input asp-for="Source" class="form-control" />.

The key here is that you need to pass an anonymous object whose property names match the routing constraints defined in the Razor Page.

For example, if you define an id (optional) routing constraint in the Razor Page:

@page "{id?}"

To redirect to that view passing a specific id, just do:

return RedirectToPage("PageName", new { id = 3 });

If you just one to redirect to the current page (but passing a specific id), just do:

return RedirectToPage(new { id = 3 });

If you just pass the number without the anonymous object it won't work.

razor pages redirect to page, Redirect To Page in ASP.NET Core Razor Pages Create ASP.NET Core Razor Pages Project. Configurations. Builder; using Microsoft. Hosting; using Microsoft. Create Razor View Imports. Select Views folder and right click to select Add\New Item Menu Select Web\ASP.NET in left Index2 Razor Redirect To Page in ASP.NET Core Razor Pages Create ASP.NET Core Razor Pages Project. Configurations. Builder; using Microsoft. Hosting; using Microsoft. Create Razor View Imports. Select Views folder and right click to select Add\New Item Menu Select Web\ASP.NET in left Index2 Razor

Pass object from one page to another through Anchor Tag Helper.

1. Model class.

   public class Car
   {
       public int ID { get; set; }
       public string Name { get; set; }
       public string Model { get; set; }
       public string Description { get; set; }
   }
   

2. Cars - PageModel.

   public class CarsModel : PageModel
   {
       public List<Car> Cars { get; private set; } = new List<Car> {
           new Car{ ID = 1, Name = "Car1", Model = "M1", Description = "Some description" },
           new Car{ ID = 2, Name = "Car2", Model = "M2", Description = "Some description" },
           new Car{ ID = 3, Name = "Car3", Model = "M3", Description = "Some description" },
           new Car{ ID = 4, Name = "Car4", Model = "M4", Description = "Some description" }
       };
   }
   

3. Cars - RazorPage(source of the pass-object) -> display all items(in our case cars) from the list of 'CarsModel'. In the 'Anchor Tag Helper' use 'asp-all-route-data' attribute, which is initialized with dictionary name as string(in our case 'dictCars').

   @page
   @using Newtonsoft.Json
   @model CarsModel
   
   @{
       ViewData["Title"] = "Cars";
   }
   
   <table>
       <thead>
           <tr>
               <th>
                   @Html.DisplayNameFor(model => model.Cars[0].Name)
               </th>
               <th>
                   @Html.DisplayNameFor(model => model.Cars[0].Model)
               </th>
               <th></th>
           </tr>
       </thead>
       <tbody>
   
       @foreach (var car in Model.Cars)
       {
   
           Dictionary<string, string> dictCars = 
           new Dictionary<string, string> { { "passedObject", JsonConvert.SerializeObject(car) } };
   
           <tr>
               <td>
                   @Html.DisplayFor(modelItem => car.Name)
               </td>
               <td>
                   @Html.DisplayFor(modelItem => car.Model)
               </td>
               <td>
                   <a asp-page="./Details" asp-all-route-data="dictCars">Details</a>
               </td>
           </tr>
       }
       </tbody>
   </table>
   

4. Details - PageModel(destination of the pass-object).

   public class DetailsModel : PageModel
   {
   
       public Car Car { get; set; }
   
       public IActionResult OnGet(string passedObject)
       {
   
           Car = JsonConvert.DeserializeObject<Car>(passedObject);
   
           if (Car == null)
           {
               return NotFound();
           }
   
           return Page();
       }
   }
   

5. Details - RazorPage.

   @page
   
   @model DetailsModel
   
   @{
       ViewData["Title"] = "Car Details";
   }
   
   <h2>Details</h2>
   
   <div>
       <h4>Car</h4>
       <hr />
       <dl class="dl-horizontal">
           <dt>
               @Html.DisplayNameFor(model => model.Car.Name)
           </dt>
           <dd>
               @Html.DisplayFor(model => model.Car.Name)
           </dd>
           <dt>
               @Html.DisplayNameFor(model => model.Car.Model)
           </dt>
           <dd>
               @Html.DisplayFor(model => model.Car.Model)
           </dd>
           <dt>
               @Html.DisplayNameFor(model => model.Car.Description)
           </dt>
           <dd>
               @Html.DisplayFor(model => model.Car.Description)
           </dd>
       </dl>
   </div>
   

razor pages tempdata, Create ASP.NET Core Razor Pages Project. On the Visual Studio, create new ASP.NET Core Web Application project. Select Empty Template. Click Ok button to Finish. Configurations. Open Startup.cs file and add new configurations as below: Create ASP.NET Core Razor Pages Project. On the Visual Studio, create new ASP.NET Core Web Application project. Select Empty Template. Click Ok button to Finish. Configurations. Open Startup.cs file and add new configurations as below: