如何在类库中创建ASP.NET Core ViewResult？

发布于 2025-02-09 03:00:53 字数 908 浏览 0 评论 0原文

在我的ASP.NET Core网站中，我有一个类库，它可以执行一些无聊的逻辑，但最终返回：

new RedirectResult（“ - some wory url”）;
new ViewResult（... ）

现在我不确定如何将模型传递到viewResult？

我尝试了以下操作：

var viewResult = new ViewResult
{
    ViewName = "MarketingPreferences",
};

viewResult.ViewData.Model = myModel; // Exception is thrown :(

但是viewData属性为null。

所以我想：创建它，对吗？

viewResult.viewData = new ViewDatadictionary（..），但我不知道该输入什么:(

有两个选项：

public viewDataDationary（viewDataDadictionary source）;>
public ViewDataDictionary（Imodelmetadataprovider Metadataprovider，ModelStateDictionary ModelState）;

，我没有第一个选项中的现有viewDataDicticaly ...

我不知道。我不知道imodelmetadataprovider是什么

？

原文

In my ASP.NET Core website, I have a class library which does some boring logic but finally returns either:

new RedirectResult("-some url");
new ViewResult(....)

now I'm not sure how I can pass a model to the ViewResult?

I tried this:

var viewResult = new ViewResult
{
    ViewName = "MarketingPreferences",
};

viewResult.ViewData.Model = myModel; // Exception is thrown :(

but the viewData property is null.

So then I thought: just create it, right?

viewResult.ViewData = new ViewDataDictionary(..) but I don't know what to pass into that :(

There are the two options:

public ViewDataDictionary(ViewDataDictionary source);
public ViewDataDictionary(IModelMetadataProvider metadataProvider, ModelStateDictionary modelState);

and I don't have an existing ViewDataDictionary in the first option ...

and for the second .. i have no idea what an IModelMetadataProvider is?

Can anyone help, please?

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剧终人散尽 2025-02-16 03:00:53

如果要将模型传递到viewResult，则可以按以下代码：

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ViewFeatures;

public class Test
    {
        Stu stu = new Stu()
        {
            Name = "Jack"
        };


        public ViewResult test()
        {
            var viewData = new ViewDataDictionary<Stu>(new EmptyModelMetadataProvider(), new ModelStateDictionary());
            viewData = new ViewDataDictionary<Stu>(viewData, stu);

            ViewResult viewresult = new ViewResult()
            {
                ViewData = viewData
            };


            return viewresult;
        }
    }

If you want to pass model to the ViewResult, You can follow this code:

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.ViewFeatures;

public class Test
    {
        Stu stu = new Stu()
        {
            Name = "Jack"
        };


        public ViewResult test()
        {
            var viewData = new ViewDataDictionary<Stu>(new EmptyModelMetadataProvider(), new ModelStateDictionary());
            viewData = new ViewDataDictionary<Stu>(viewData, stu);

            ViewResult viewresult = new ViewResult()
            {
                ViewData = viewData
            };


            return viewresult;
        }
    }

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