Hello,

I kind of just started to "play around" with functional programming and F# and I have some - I hope - easy questions.

In order to get started with F# I wanted to utilize the ADO.NET Entity Framework.

Except, 2 things I didn't quite figure out...

#light

open System;

open System.Data.Objects;

open MyDB;

let conString =

"metadata=res://*/MyDB.csdl|res://*/MyDB.ssdl|res://*/MyDB.msl;provider=System.Data.SqlClient;provider

connection string='Data Source=localhost;Initial

Catalog=MyDB;Integrated Security=True;MultipleActiveResultSets=True';

using (new MyDBEntities(conString))

(fun mydbentitites ->

let op1 = [| new ObjectParameter("NAME_ID", 1) |]

let objectQuery1 = mydbentitites.CreateQuery<NAME>("[NAME]", op1)

for name in objectQuery1 do

Console.WriteLine("Test {0}", name.NAME_FULLNAME )

)

the former code works great so far, except that I would like to omit

the ObjectParameter op1, which in C# is a variable params array of

ObjectParameter, the signature of that method looks like this:

public ObjectQuery<T> CreateQuery<T>(string queryString, params ObjectParameter[] parameters)

when I'm not passing that ObjectParameter, I'm getting the following exception at compile time:

The member or object constructor 'CreateQuery'

takes 2 argument(s) but is here given 1. The required signature is

'ObjectContext.CreateQuery<'T>(string queryString,

ObjectParameter array parameters) : ObjectQuery<'T>'.

... passing null is also not an option. Am I doing something wrong, or

is that a known problem in F#? I searched for hours on the internet but

didn't find anything.

The second question I have is about the QueryBuilder methods:

let op1 = [| new ObjectParameter("NAME_ID1", 1) |]

let op2 = [| new ObjectParameter("NAME_ID2", 1) |]

let objectQuery1 = mydbentitites.CreateQuery<NAME>("[NAME]", op1)

let objectQuery2 = objectQuery1.OrderBy("it.NAME_FULLNAME", op2)

for name in objectQuery2 do
Console.WriteLine("Test {0}", name.NAME_FULLNAME )

that works also great. Is it also possible to use it somehow that way? (like in C#) :

let objectQuery1 = mydbentitites.CreateQuery<NAME>("[NAME]").OrderBy("it.NAME_FULLNAME")

the compile time exception I'm getting:

Successive arguments should be separated by

spaces or tupled, and arguments involving function or method

applications should be parenthesized.

Thx a lot,

Daniel