英文:
Route never get the correct parameters sent from another route
问题
我有一个在.NET Core 7.0中使用C#10编写的非常简单的MVC控制器。
问题是，在Index方法中，我发送到Calculate方法的值从未到达，它总是到达VolatilityViewQueryModel类的新实例。为什么会这样？
提前感谢。
英文:
I have this very simple MVC controller in .net-core net7.0, using c#10
public class HomeController : Controller
{
public IActionResult Index(VolatilityViewQueryModel model = null)
{
if (model is null)
{
model = new VolatilityViewQueryModel
{
BigInterval = 365,
SmallInterval = 7
};
}
return View(model);
}
[HttpPost]
public IActionResult Calculate([FromForm]VolatilityViewQueryModel query)
{
//here i will go to a service to get some data, this is just to make the example easier to understand
query.Data = new VolatilityResult[] { new VolatilityResult() };
return RedirectToAction(nameof(Index), new { model = query});
}
}
the problem is that at Index method it never arrives the value i send in the Calculate method, it always arrives a new instace of the VolatilityViewQueryModel class. Why is that?
Thanks in advance
答案1
得分: 2
这是因为您使用匿名类型调用Index方法，但它需要VolatilityViewQueryModel类型。因此，MVC会创建一个新的空实例VolatilityViewQueryModel并将其传递给Index操作方法。
使用：
return RedirectToAction(nameof(Index), query);
英文:
This is because you call the Index method with anonymous type, but it expect the VolatilityViewQueryModel type. Therefore, the MVC is creating a new empty instance of the VolatilityViewQueryModel and pass it to the Index action method.
Use:
return RedirectToAction(nameof(Index), query);
答案2
得分: 0
由于它是相同的控制器，您可以使用更简单的代码：
return Index(query);
英文:
since it is the same controller, you can use much more simple code
return Index(query);
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