After some updates, my helpers began to give problems, for example, if I were to use @Html.TexBoxFor , Razor would not recognize it.
After searching a lot, I was asked to use @using System.Web.Mvc.Web in View that I was writing. Here's the surprise: My System.Web.Mvc does not have Web .
Sometime it worked normally, I do not know what might have happened and I'm starting in MVC now.
If you have problems with this, you may have to go back to the original settings.
How?
In this link , we have the address that explains correctly how to proceed in an MVC update / return in Visual Studio. There are several versions of this link, it all depends on which version you are using.
Example:
To use Package Manager Console , do the following:
On the front PM> paste the respective version you are using, for example:
PM> Install-Package Microsoft.AspNet.Mvc -Version 5.1.0
and press <Enter>