How can i get id of inserted record Using Entity Framework

Question

I have a problem with Entity Framework in Asp.net. I want to get the Id value whenever I add a record to the SQL database table. How can I do this? Here is my code:

StoredProcedure 



USE [Sapphiresworld]
GO
/****** Object:  StoredProcedure [dbo].[addProduct]    Script Date: 7/4/2018 10:25:41 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Proc [dbo].[addProduct]
@title nvarchar(250),
@price nvarchar(50),
@unitID int,
@date nvarchar(50),
@subCategoryID  int,
@brandID int,
@vat int,
@discount int,
@picture nvarchar(50),
@stock int
as
declare @MyVal int=0
INSERT into [PRODUCT] values (@title,
@price ,
@unitID,
@date,
@subCategoryID  ,
@brandID ,
@vat ,
@discount ,
@picture ,
@stock)
Set @MyVal = @@IDENTITY
Select @MyVal as Val

Here is ClsBrand

        public string AddBrand(string brandName)
   {
   var result = new SapphiresworldEntities().AddBrand(brandName).ToString();

        return result;       
   }

Code against Save Button

  protected void Btnsave_Click(object sender, EventArgs e)
{
            clsBrand nb = new clsBrand();
      string nwBran = nb.AddBrand(relig.Text);

}

Answer 1

After inserting a record, the Id value will automatically populate. You just take the value like from objectname.Id.

Answer 2

一旦您在实体框架中调用保存更改方法，ID 将自动填充（假设您有 ID 作为表中的标识列）

Answer 3

As per the above answers the id value will automatically populate after record will insert.

Here is the example.

your DataModel class ex.

public class MyDataModel
{
    [Key]
    public int Id {get; set;}
    public string TestData {get; set;}
}

and when you are going to insert your data using entity framework use this

public bool SaveMethodInDataBase(MyDataModel myDataModel)
{
     MyDataModel result = _dbContext.MyDataModel.Add(myDataModel);
     _dbContext.SaveChanges();
}

then this result will return data with Id. in here _dbContext is your EntityFrameWork SPContext if you created.

Try This.

Answer 4

Complete Solution

public class Student
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public async Task<IActionResult> Create([Bind("Id,Name")] Student student)
{
    if (ModelState.IsValid)
    {
        _context.Add(student);
        await _context.SaveChangesAsync();

        //Here your Id Value after insert record
        int StudentId = student.Id;

        return RedirectToAction(nameof(Index));
    }
    return View(student);
}

Hope you understand and it will be helpful for you.