Invalid column name 'userid'

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ASP

CodeFirst

MVC5

, +

Hello,

I am using ASP MVC ENTITY FRAMEWORK CODE FIRST. I have a table called "Voiture" which contains 4 fields. I am trying now to add a new field UserID by writing this in my Class Voiture.cs :

[Required]
public String UserId { get; set; }

but I got always this Error :

<pre lang="c#">Invalid column name 'UserId'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.SqlClient.SqlException: Invalid column name 'UserId'.

What I have tried:

in order to show only the data related of the logged User, I wrote this in my Controller :

return View(db.Voitures.Where(a => a.UserId == HttpContext.User.Identity.Name).ToList());