Question

I’m using LINQ to SQL and I’m wondering if there is a short cut to this syntax:

using (Model db = new Model())
{
    LinqObj l = db.LinqObj.Where(o => o.ID = id).Single();
}

I know I could just create a static method that returns a LinqObj object:

public static LinqObj FromID(int id)
{
    using (Model db = new Model())
    {
        return LinqObj l = db.LinqObj.Where(o => o.ID = id).Single();
    }
}

Which got me thinking; is there a way to create a constructor that returns the object:

LinqObj l = new LinqObj(ID: 7);

What is the best way to create an object of a single row in a LINQ to SQL object?

Answer 1

You can have a utility method for the LINQ to SQL boilerplate:

static T GetObject<T>(Func<Model, T> func)
{
   using(var db = new Model()) return func(db); 
}

And then just do this:

var l = GetObject(db => db.LinqObj.Single(o => o.ID == id));