microsoft.public.dotnet.languages.csharp Google Group

Re: LINQ: Count records

2009-07-05T16:37:13Z

Do you have
using System.Linq;
in your source code and a reference to System.Core in your references
(in solution explorer)?

Re: LINQ: Count records

2009-07-05T16:14:44Z

I red this document, but when i want read this value
int recCount = ctx.UsersGet().Count();
I got compile error like this:
Error 2 'System.Data.Linq.ISingleResul t<UsersGetResult>' does not contain a
definition for 'Count' and no extension method 'Count' accepting a first
argument of type 'System.Data.Linq.ISingleResul t<UsersGetResult>' could be

Re: AttachConsole with Windows Service?

2009-07-05T15:06:16Z

Security isn't an issue, its all locked away from unauthorised users.
Telnet has been fine, but I use Telnet for displaying menu options and I
can't clear the screen, so the Console would have made it easier.
Thanks for your advice.
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Re: AttachConsole with Windows Service?

2009-07-05T14:54:55Z

Services cannot interact with the desktop unless you configure them that way
(and even that no longer works from Vista onwards, as they run in their own
isolated session). This is by design, because services typically run with
elevated privileges and allowing non-privileged programs to interact with

Re: LINQ: Count records

2009-07-05T12:56:59Z

Then UsersGet().Count() should do, see
[link]
which lists a Count method.

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Re: LINQ: Count records

2009-07-05T12:46:12Z

ISingleResult<T> implements IEnumerable<T> and that way should have a
Count method.

Re: LINQ: Count records

2009-07-05T12:46:03Z

Hi, code generated for this stored procedure look like this:
[Function(Name="dbo.UsersGet") ]
public ISingleResult<UsersGetResult> UsersGet(){
IExecuteResult result = this.ExecuteMethodCall(this,
((MethodInfo)(MethodInfo.GetCu rrentMethod())));
return ((ISingleResult<UsersGetResult >)(result.ReturnValue));

AttachConsole with Windows Service?

2009-07-05T12:31:31Z

I would like to launch a new Console Window when my Service starts up.
I tried using AttachConsole but this doesn't appear to work.
My guess is, this method is intended for GUI's only?
Any help would be appreciated.
Currently I need to connect to my Service via Telnet and allow the users
various options (means reading key entries over socket etc and the

Re: LINQ: Count records

2009-07-05T12:40:41Z

User "Alexander Mueller" <mille...@hotmail.com> wrote
Not sure, ctx.UsersGet() returns
System.Data.Linq.ISingleResult <UsersGetResult> which not have
method/property Count().
Any ideas?
Best regards
Adam

Re: LINQ: Count records

2009-07-05T12:22:47Z

Try whether
ctx.UsersGet().Count()
gives you the count.
But if you do
int count = ctx.UsersGet().Count();
and then
foreach (UsersGetResult usr in ctx.UsersGet())
{
...
}
you might pull the data twice from the database server so maybe
var users = ctx.UsersGet().ToList();
int count = users.Count();

Re: LINQ: Count records

2009-07-05T12:25:53Z

Alexander Mueller schrieb:
Of course this will still execute the SP and fetch the data from
the DB-table "Users".
If you'd do the Count() directly on the mapped LINQ-table
- default name of the getter would be "TUserss" - LINQ-To-SQL
would translate the "Count()" extension-method into a
"SELECT Count(*) FROM Users;".

Re: LINQ: Count records

2009-07-05T12:18:55Z

Adam K. schrieb:
Since 'ctx' seems to be of type System.Data.Linq.DataContext
and UsersGet() probably returns the data as
System.Data.Linq.Table<UsersGe tResult>
the extension-method "Count()" will give you the SP's rowcount.
SampleDatabaseContext ctx = new SampleDatabaseContext(connecti onString);
System.Data.Linq.Table<UsersGe tResult> users = ctx.UsersGet();

LINQ: Count records

2009-07-05T11:40:55Z

Hi,
I have stored procedure that returns some records from table, i.e. like
this:
CREATE PROCEDURE dbo.UsersGet AS
BEGIN
SELECT * FROM Users;
END
In c# i can acces to this stored procedure by code:
SampleDatabaseContext ctx = new SampleDatabaseContext(connecti onString);
foreach(UsersGetResult usr in ctx.UsersGet()) {

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