Question

To populate a List from a DataTable I typically write a statement like this:

List<Foo> foos = dt.AsEnumerable().Select(dr =>
    new Foo { Bar = Convert.ToIn32(dr["Bar"]),
              Baz = Convert.ToDecimal(dr["Baz"]) }).ToList();

How may I write a similar statement to initialize a single object when I know the DataTable will return just 1 row like the following pseudo code:

Foo foo = dt.Rows[0].Select(dr =>
    new Foo { Bar = Convert.ToIn32(dr["Bar"]),
              Baz = Convert.ToDecimal(dr["Baz"]) });

I would like to write just one statement and want to avoid (if possible) 2 lines like this:

DataRow dr = dt.Rows[0];
Foo foo = new Foo { Bar = Convert.ToIn32(dr["Bar"]),
                    Baz = Convert.ToDecimal(dr["Baz"]) });

I have tried combinations of Where, Select, First, Single but cannot hit the nail on the head!

Any answers as ever are appreciated.

Answer 1

Foo foo = dt.AsEnumerable().Select(dr =>
    new Foo { Bar = Convert.ToIn32(dr["Bar"]),
              Baz = Convert.ToDecimal(dr["Baz"]) }).Single();