Question

I have the following class

 public class Expense
{
    public Guid ExpenseId { get; set; }
    public DateTime date { get; set; }
    public string type { get; set; }
    public int cost { get; set; }
    public string extra { get; set; }
}

I am posting data from webpage to the cntroller method which saves this data in the database as follows:

   public string SaveExpense(Expense obj)
    {
        obj.ExpenseId = Guid.NewGuid();
        if (ModelState.IsValid)
        {
            context.expenses.Add(obj);
            context.SaveChanges();
            return "Saved";
        }
        else
            return "Error";   
    }

The Expense obj is posted from webpage using AJAX and JQuery. The data is coming into the controller method properly but it is not saved in the database. how can I save this data? Moreover, I am creating the ExpenseId while saving the data so records may be duplicates but will have the different ExpenseId. Please suggest me a way to overcome this.

Answer 1

You are not saving the changes you have made.

1. Try this: context.SaveChanges();

   From the documentation:

   public int SaveChanges()

   //Persists all updates to the data source and resets change tracking in
   the object context.

2. Check the Return Value of the function to confirm if it was saved or not.

   Type: System.Int32 The number of objects in an Added, Modified, or
   Deleted state when SaveChanges was called.

3. If it is not saved, then put the code inside a try-catch block and log the exception to check what is the problem.

Hope it helps!