Insert data asp.net mvc5 code first Entityframework

Hello,,please follow this link:

1) http://www.c-sharpcorner.com/UploadFile/8ef97c/mvc-5-0-application-using-entity-framework-code-first-approa/

2) http://www.c-sharpcorner.com/UploadFile/3d39b4/crud-operations-using-entity-framework-5-0-code-first-approa/

3) https://docs.microsoft.com/en-us/aspnet/mvc/overview/getting-started/getting-started-with-ef-using-mvc/creating-an-entity-framework-data-model-for-an-asp-net-mvc-application

4) http://www.entityframeworktutorial.net/code-first/entity-framework-code-first.aspx

5) https://www.codeproject.com/Articles/826571/Code-First-Approach-with-ASP-NET-MVC-Framework