How to update only one field using Entity Framework?

Question

Here\'s the table

Users

UserId
UserName
Password
EmailAddress

and the code..

Answer 1

i'm using this:

entity:

public class Thing 
{
    [Key]
    public int Id { get; set; }
    public string Info { get; set; }
    public string OtherStuff { get; set; }
}

dbcontext:

public class MyDataContext : DbContext
{
    public DbSet Things { get; set; }
}

accessor code:

MyDataContext ctx = new MyDataContext();

// FIRST create a blank object
Thing thing = ctx.Things.Create();

// SECOND set the ID
thing.Id = id;

// THIRD attach the thing (id is not marked as modified)
db.Things.Attach(thing); 

// FOURTH set the fields you want updated.
thing.OtherStuff = "only want this field updated.";

// FIFTH save that thing
db.SaveChanges();