C# Discussion Boards - CodeProject

Re: Seeding Random Number Generator

8-Jun-12 7:50

Your call to Next:

int randomNumber = randomNum.Next(0,1);

will always return 0 because the lower limit (0) is INCLUSIVE, meaning it will be included in the possible range of values and the upper limit (1) is EXCLUSIVE, meaning that it will NOT be included in the range of possible values.

So, since Next always return an integer (whole number) and your result set goes from 0 to 0, your code will always return 0.

To return 0 or 1, you have to change the range to:

int randomNumber = randomNum.Next(0,2);

Try reading the documentation on Random.Next(int32, int32)[^].

If you want decimal values greater than or equal to 0 and LESS THAN (NOT EQUAL TO!) 1, you'll have to call Random.Double() instead. This will, of course, return a number of type double, not int.

Oh! and your "seed" value sucks if you're looking for anything close to "true" randomness. You're limiting yourself to only 936,000 different sequences of pseudo-random numbers.

Since the default constructor of Random will initialize the generator with the value in the system clock, it has the capability of generating 4.2 billion different random number sequences.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

modified 8-Jun-12 14:08pm.

Paul Conrad8-Jun-12 12:08

Paul Conrad

8-Jun-12 12:08

Dave Kreskowiak wrote:
"seed" value sucks if you're looking for anything close to "true" randomness

I agree. He should also toss the day of the month in there as well, and if savvy enough with some assembly programming, grab the lower 32 bits of the RDTSC instruction (or play around with the QueryPerformanceCounter) as well, that could lean in the direction of a bit more "random" seed...

""Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Re: Seeding Random Number Generator

PIEBALDconsult8-Jun-12 11:25

PIEBALDconsult

8-Jun-12 11:25

MichCl wrote:
Random randomNum = new Random(seed);

And that should be a field (perhaps static), not a metthod variable.

PBX and C# and TAPI

jojoba20117-Jun-12 22:47

7-Jun-12 22:47

Hi CodeProject World,
How can i use TAPI for PBX via C#.
I wanna to have Caller Id and Transfer and Make Call from my PBX via TAPI and C#.
i have three line 101,102,103 from my PBX and 4 line in coming into PBX.
i have connected line 103 via Phone wire to my computer Modem.
We have 3 computers in our work office and all have connected to PBX via Modem.
Thanks in advanced !

Dave Kreskowiak8-Jun-12 3:24

8-Jun-12 3:24

TAPI might not come into play with this at all.

You have to dig out the documentation on your PBX system and find out if it exposes some kind of interface over that modem connection or some other connection you can use.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

jojoba20118-Jun-12 4:47

8-Jun-12 4:47

Thanks for reply.
But what about this . how do they done that ?
http://www.tapi.info/default.aspx/TAPI/TSPsPBX.html[^]

modified 8-Jun-12 12:26pm.

Dave Kreskowiak8-Jun-12 7:45

8-Jun-12 7:45

You linked to a Wiki page, not to an actual application or article.

That page lists a few drivers for specific PBX's. Do you have one of those??

This is where YOU do research, based on what YOU have and what YOU know. I'm not doing it for you and chances are really good that you're not going to find example code for exactly what you're looking for.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

jojoba20118-Jun-12 7:57

8-Jun-12 7:57

So what is the solution.isnt it possible.(I have panasonic PBX).

can i use kdtele OCX for this.?

Help plz.
Thanks in advanced.

Dave Kreskowiak8-Jun-12 8:06

8-Jun-12 8:06

Is it possible?? YES!

It is possible on YOUR system? I have no idea!

YOU have to dig out your documentation to verify it and start researching yourself.

Interfacing with a PBX is not a common task, so you're not going to find a whole ton of experience and sample code out there. But, you can probably start with Googling for "".
C# PBX Integration[^]

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

jojoba20118-Jun-12 8:16

8-Jun-12 8:16

thanks for your attention.
I have googled a lot but .......

I just wanna control the phone line which is coming out of PBX to my computer modem.
make call,transfer call,..
the same thing that my central phone done.

Dave Kreskowiak8-Jun-12 10:13

8-Jun-12 10:13

I have no idea and I'm not doing all the research for you. That's what YOU are getting paid to do.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

jojoba20118-Jun-12 20:36

8-Jun-12 20:36

BUT .......
HELP

Dave Kreskowiak9-Jun-12 4:56

system.web.mail do note save sentitem

9-Jun-12 4:56

If your'e looking to be spoon fed, you're not going to get it.

I've already given what you need to get started. This is where YOU TEACH YOURSELF something new.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

GinoPittaro19647-Jun-12 22:37

GinoPittaro1964

7-Jun-12 22:37

I am using system.web.mail in windowsform to send mails on a ssl webmail of a service for certified mails. The problem is that the mails are not saved in the sentItems. Is there anyway to dio that? (Thanks)
here is the code:
System.Web.Mail.MailMessage newMail = new System.Web.Mail.MailMessage();
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", "smtps.pec.aruba.it");
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", "465");
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", "2");
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "xxxxxxxxxxxxx@pec.it");
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "yyyyyyyyyyyyyyy")
newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");
newMail.From = "xxxxxxxxxxxxx@pec.it");

newMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/savesentitems", "true");

newMail.To = dataGridView2.Rows[i].Cells[0].Value.ToString().Trim();

newMail.Subject = textOggetto.Text;

newMail.BodyFormat = System.Web.Mail.MailFormat.Html;

newMail.Body = editor.BodyHtml;

System.Web.Mail.SmtpMail.SmtpServer = "smtps.pec.aruba.it:465";

System.Web.Mail.SmtpMail.Send(newMail);

egenis7-Jun-12 23:55

egenis

7-Jun-12 23:55

AFAIK it will not save it in Sent Mail because you are not using a mail application (for example Outlook) to send the mail.

Your code sends the mail in the background instead of using a mail client (for example Outlook). The mail client keeps track of sent and received items.

What I can suggest, if you need to account for sent mails, is to log the items to a flat file or db.

GinoPittaro19648-Jun-12 0:02

GinoPittaro1964

8-Jun-12 0:02

Thanks for your reply, I have searched for a way to save a message object in .eml file, but I found nothing. Any help? Thanks a lot!

egenis8-Jun-12 0:31

egenis

8-Jun-12 0:31

Have a look at this code project article.

I have not tried it but it seems to be what you are after.

Bernhard Hiller8-Jun-12 3:03

Bernhard Hiller

8-Jun-12 3:03

You use SMTP, not IMAP. With SMTP, the mail will not be copied to the "sent" folder on the mail server. You could add your own email address in the cc or bcc field to get a copy to yourself.