c# - C#中如何获取插入行的ID

Question

我有一个完美运行的插入，但需要获取它刚刚插入的行的值。不知道我该怎么做。尝试了一些东西......没有用。 这是我的插入:

//method to insert data
private void insertNewProject()
{
    using (dbPSREntities5 context = new dbPSREntities5())
    {
        //Create a new instance of the tbProject object
        tbProject proj = new tbProject {
            //Add new values to each fields
            ProjectContactInfo = txtContactPhone.Text,
            refDepartmentID = Convert.ToInt32(ddlDepartments.SelectedValue)
        };

       context.tbProjects.AddObject(proj);

       context.SaveChanges();

       id = (int)command.ExecuteScalar; <--- something like this but this doesn't work.
    }
}

Answer 1

一旦 context.SaveChanges(); 被调用，它将在您的对象中自动更新。

   context.tbProjects.AddObject(proj);

   context.SaveChanges();

   id = proj.Id;