如何解决MVC 5更新和删除错误

本文介绍了如何解决MVC 5更新和删除错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我已经在.net 4.7.2中构建了MVC 5 Web应用程序.它在我的本地计算机上运行良好.更新和删除命令失败，由于这篇文章，我现在对此进行了整理:

更新:

进一步研究之后，我的托管服务器现在更新为.net 4.8，现在一切都失败了.现在，我什至无法加载索引视图页面.它在与上述相同的40行处中断.
在IIS中，我的应用程序池设置为集成的.net 4.0.从下拉列表中看不到更高的内容.
在IIS中，HTTP动词列表中没有过滤任何内容，我认为这意味着它应该接受任何内容.

更新2

更新到.net 4.8后，我现在遇到一个新错误

我已启用IIS中的所有功能，包括将所有ASP配置从只读"更改为读/写".

我担心我可能会将漏洞引入VPS ...

要使它正常工作，我还需要做其他事情吗?

解决方案

所以，这就是我最终使它起作用的方式:

我被Plesk托管为控制面板".显然，Plesk有一些锁，我必须在这里解锁:

感谢 https://support.plesk.com/hc/en-us/articles/115000287305-Site-shows-500-19-Internal-Server-Error-Config-Error-Lock-violation.我很惊讶我的房东对此无能为力！

在启用VPS中其他所有功能的过程中，我最终启用/安装了WebDAV.显然，这也不会允许"编辑/删除操作.我没有卸载它，而是从web.config整理出了这样的代码:
< system.webserver>...

感谢 Web API放置请求生成Http 405不允许的方法错误

I have built MVC 5 Web application in .net 4.7.2. It runs fine in my local machine. Update and Delete commands were failing, which I have now sorted out thanks to this post: DELETE/PUT verbs result in 404 Not Found in WebAPI, only when running locally, I added this line to the web.config and all the CRUD now works:

<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0

However, when I publish the application to my hosting server it breaks at this line in the web.config.When I remove the line only Create and Retrieve data works, but Update and Delete fails with the error:

I understand this is because the model is null/nothing at this point.

This is my delete function showing where the error starts...

    Public Function Delete(ByVal id As Integer) As ActionResult

        Dim Client As HttpClient = New HttpClient()
        Client.BaseAddress = New Uri(myWeb & "AppMenuCRUD")

        Dim APIConsumer = Client.DeleteAsync("AppMenuCRUD/" & id.ToString())
        APIConsumer.Wait()

        Dim Result = APIConsumer.Result << failure here: Error 404

        If Result.IsSuccessStatusCode Then
            Return RedirectToAction("Index")
        End If

        Return View("Index")

    End Function

The hosted server is running Windows Server 2016, .Net 4.7.2. I have enabled read/write to the website folder.

This is my IIS Settings in the hosting server:

UPDATES:

Having looked further into this, my hosting server is now updated to .net 4.8 and everything now just fails. I am now not able to even load the index view page. It breaks at the same line 40 as above.
In IIS, my application pool is set to integrated, .net 4.0. I cannot see anything higher from the dropdown list.
In IIS, I have nothing filtered in the list of HTTP Verbs, which I believe means it should accept anything.

UPDATE 2

After the updates to .net 4.8, I am now getting a new error

I have enabled everything in the IIS, including changing all the ASP Configurations from Read Only to Read/Write.

I'm fearing I may introduce vulnerabilities to the VPS...

Is there anything else I need to do to get this to work?

解决方案

So, this is how I finally got it to work:

I am hosted with Plesk as 'control cpanel'. Apparently, Plesk has some lock which I had to unlock here:

Thanks to https://support.plesk.com/hc/en-us/articles/115000287305-Site-shows-500-19-Internal-Server-Error-Config-Error-Lock-violation. I was quite surprised my host could not help with this!

In the gymnastics of enabling everything else in my VPS, I ended up enabling/installing WebDAV. This also apparently does not 'allow' Edit/Delete actions. Instead of uninstalling it, I sorted it out from the web.config like this:
<system.webserver>...

Thanks to Web API Put Request generates an Http 405 Method Not Allowed error

这篇关于如何解决MVC 5更新和删除错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！