CODEWITHSUNDEEP
asp.net-mvcvisual-studio-2015
Arpit
Arpit

Reputation: 65

Error occoured while adding view in Visual Studio 2015

So I am using these classes in my application.

 public class Expenses
 {
    public Category Category { get; set; }
    public PaymentModes PaymentModes { get; set; }
 }

 public class Category 
 {
    public int CategoryID { get; set; }
    public string CategoryName { get; set; }
 }

public class PaymentModes
 {
    public int PaymentModeID { get; set; }
    public string PaymentMode { get; set; }
 }

Now when I add view in Details method it throws below error.

 public ActionResult Details(int id)
 {
    return View();
 }

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What should I do?

Upvotes: 0

Views: 52

Answers (1)

TanvirArjel
TanvirArjel

Reputation: 32139

Look at the error message. Its clearly saying that you don't primary key defined for the PaymentModes and Expenses model classes. Please write your all three model classes as follows:

public class Category 
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int CategoryID { get; set; }
    public string CategoryName { get; set; }
}

public class PaymentModes
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int PaymentModeID { get; set; }
    public string PaymentMode { get; set; }
}

public class Expenses
{
     [Key, ForeignKey("Category"),Column(Order = 0)]
     public int CategoryID { get; set; }

     [Key, ForeignKey("PaymentModes"),Column(Order = 1)]
     public int PaymentModeID { get; set; }

     public Category Category { get; set; }

     public PaymentModes PaymentModes { get; set; }

}

Upvotes: 1

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