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MVC code firs issue

Rohit

10y826.NET

hi

i am doing using code first approach i getting this error

plz help me

file attached

2 Replies

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Ravi Patel10y ago
Accepted answer
Hi ,
if you are not using convention over configuration . then you have to do like this
change your Employee model class then compile it ,
and apply the migration

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
namespace my
{

public class Employee
{
[Key]
public int EmpId{ get; set; }
public string name { get; set; }
}
}
Nilesh Joshi10y ago
As per the error description, it seems that you do not have identity/keydefined on the entity class. Please check whether you havecolumn/property named "Id"defined in the Employee class. If you do not have "Id"property or you are using anyotherproperty as key column on Entity, make sureto annotate it with "[Key]" attribute.
Please note that, if you have"Id" as column name, EF will automaticallytreats it as Key column.
Hope that helps