我正在使用Asp.net core 2.0和razor页面开发Web应用程序。我创建了一个带有一些数据的对象，并希望将该对象发送到另一个页面。
实际上，我正在执行以下操作：
var customObject = new{
//some values
};
return RedirectToPage("NewPage", customObject);
我发现URL中有我发送的对象的值，但是我找不到如何在NewPage实例中获取这些值。
有人知道如何在Razor页面之间共享对象吗？这是正确的实现方式吗？还是有更好的方法？
提前致谢。
return RedirectToPage("Orders", "SingleOrder", new {orderId = order.Id});
页面模型类方法的签名如下：
public void OnGetSingleOrder(int orderId)
如果您要传递一个对象，您可以直接传递该对象，但是根据我的经验，任何子对象都不会被填充。
return RedirectToPage("PageName", new { id = 3 });
如果您只想重定向到当前页面（但传递特定的id），只需执行以下操作：
return RedirectToPage(new { id = 3 });
public async Task<IActionResult> OnGet([FromRoute]string userId, [FromQuery]bool? cs = null)当从同一页重定向时，只需执行以下操作：
return RedirectToPage(new { cs = true }); - 1atera1uszModel class.
public class Car
{
public int ID { get; set; }
public string Name { get; set; }
public string Model { get; set; }
public string Description { get; set; }
}
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" }
};
}
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>
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();
}
}
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>
我不知道这是否对你有所帮助，或者在类似Razor的MVVM风格中是否是最佳实践，但在ASP.NET Core API项目中，我经常使用自定义全局DI服务，例如
public void ConfigureServices(IServiceCollection services)
{
...
services.AddSingleton<IMyService, MyService>();
...
services.AddMvc();
}
您可以通过设置IndexModel和CustomModel之间的数据来进行交换，例如：
public class CustomModel : PageModel
{
public IMyService _myService;
public CustomModel(IMyService myService)
{
_myService = myService;
}
public async Task<IActionResult> OnPostAsync(...)
{
...
_myService.SetDataOrSometing(...);
...
return RedirectToPage();
}
}
并像这样检索它
public class IndexModel : PageModel
{
public IMyService _myService;
public IndexModel(IMyService myService)
{
_myService = myService;
}
public void OnGet()
{
var data = _myService.GetDataOrSomething();
}
}
从这里开始，您还可以使用ObservableCollection并注册事件，以便将更新传递到您的PageModels。
在我看来，这是一种通过清晰地分离关注点来在页面之间传递对象的方式。
RedirectToPage()调用中创建一个匿名实例。 - FoggyDayreturn Redirect("/Home/NewPage?id=" + customObject.Id);
GET实现数据共享。 - McGuireV10