ASP.NET

29-Feb-08 9:37

How to create standalone web service (if that is the right term) that is resident in memory and running all the time? I mean I dont need url for it , start page adn of course no interaction.. I mean I dont want to invoke any function or call WS in another app, just want to have it running all the time.

WS will check some web site for some word and inform me by email when it appears.

Regards,
Jalle

modified on Friday, February 29, 2008 3:43 PM

Not Active29-Feb-08 9:43

29-Feb-08 9:43

What you're asking for is called a Windows Service

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Jalle29-Feb-08 10:00

29-Feb-08 10:00

OK great thank you.

I made windows service and add following code

<br />
Imports System.Net.Mail<br />
Public Class Service1<br />
<br />
Protected Overrides Sub OnStart(ByVal args() As String)<br />
        Debug.Print("sending")<br />
        SendEmail("test", "jaskotr@yahoo.com") <br />
    End Sub<br />
<br />
    Protected Overrides Sub OnStop()<br />
  ' Add code here to perform any tear-down necessary to stop your service.<br />
    End Sub<br />
<br />
End Class

And press F6 but nothing happens , email not sent and Immediate window is emppty. Why, please ?

But what confuses me also is how can I have windows service published on some asp.net server ?

Expert Coming29-Feb-08 11:01

Expert Coming

29-Feb-08 11:01

Member 1648727 wrote:
email not sent and Immediate window is emppty

What is in your SendMail() method?

Member 1648727 wrote:
But what confuses me also is how can I have windows service published on some asp.net server ?

Just install the service on the ASP.NET machine when it is done.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Not Active29-Feb-08 11:12

29-Feb-08 11:12

Expert Coming wrote:
What is in your SendMail() method?

Irrelevant

Expert Coming wrote:
Just install the service on the ASP.NET machine when it is done.

Not a good idea. Besides the OP seems a bit confused as to what s/he wants.

only two letters away from being an asset

Expert Coming29-Feb-08 11:16

Expert Coming

29-Feb-08 11:16

Mark Nischalke wrote:
Expert Coming wrote:
What is in your SendMail() method?

Irrelevant

I may be missing something here but he said it didn't send the message. We need to see the code that trys to send it to help figure out what is wrong right?

Mark Nischalke wrote:
Expert Coming wrote:
Just install the service on the ASP.NET machine when it is done.

Not a good idea. Besides the OP seems a bit confused as to what s/he wants.

I could agree with this though. But I still think that for the question asked, I answered it correctly. That is if the OP understood what they wanted.

P.S. - I took no offense to that, but I would like to get some understanding too... Wink | ;)

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Not Active29-Feb-08 12:20

29-Feb-08 12:20

The SendMail method is irrelevant because the OP was trying to run the service incorrectly so the method would never be run anyway. A Windows Service can't started simply be pushing F6.

"Cannot start a service from the command line or a debugger. A Windows Service must first be installed (using installutil.exe) and then started with the ServerExplorer, Windows Services Administrator tool or the NET START command."

only two letters away from being an asset

Expert Coming29-Feb-08 12:50

Expert Coming

29-Feb-08 12:50

Wow, I can't believe I didn't think about that. Thanks.

The best way to accelerate a Macintosh is at 9.8m/sec² - Marcus Dolengo

Not Active29-Feb-08 11:06

29-Feb-08 11:06

You can't start a Windows Service like that. Start here http://msdn2.microsoft.com/en-us/library/d56de412(VS.80).aspx[^]

Member 1648727 wrote:
how can I have windows service published on some asp.net server

Do a little more research and figure out what it is you want, a web service or a windows service.

only two letters away from being an asset

Jalle1-Mar-08 11:37

1-Mar-08 11:37

Hello guys (and girls),
Thank you for your help, I appreciate that

I have finished all the coding.
Program checks a web site and if it finds one specific word then it emails result and sends sms to mobile number. (sorry cant copy/past code because company rules)

Now only question is : Will it be a web service or windows service ?

If I am going to place it locally on my computer then I will need to do some additional checks , like is there any Internet connection and so. I dont like that.

Is it possible to have this code running on some remote server? (I have godaddy account but don't know where to look). Isnt that what web service do ?

THANK YOU ALL ! $Shucks | :-\$

Not Active1-Mar-08 13:40

1-Mar-08 13:40

Webservices are more of a pull technology. Something must initiate the action. A Windows Service on the other hand can be designed to self trigger, or run at a set interval.

Member 1648727 wrote:
like is there any Internet connection and so. I dont like that.

Without an internet connection how are you planning on checking these websites for keywords?

only two letters away from being an asset

Jalle1-Mar-08 21:56

1-Mar-08 21:56

Mark Nischalke wrote:
Webservices are more of a pull technology. Something must initiate the action. A Windows Service on the other hand can be designed to self trigger, or run at a set interval.

Hello Mark

Yes I know web services are more like pull technology. I work in a company that works together with airlines. Our present project is SMS client which tracks flights and sends information to passenger mobile phone. Thats where we needed web services.

But this other problem I have is little bit different.
To have some small program running all the time which can check some url periodicaly ...

Mark Nischalke wrote:
Without an internet connection how are you planning on checking these websites for keywords?

So I need two things
- PC running all the time
- Internet connection

That looks like server, right. Now I come to conclusion:

You can't install it at some real server like 'windows service' (unless you are IT administrator in your local company)
You can't install it as 'web service' because it will need something to invoke it, and you don't wanna to do that.

Please someone , let me know that is practice here, so I don't go around to much Sniff | :^)

I will ask godaddy support if they know anything about this...

Cheers!

Not Active2-Mar-08 3:21

2-Mar-08 3:21

Member 1648727 wrote:
Please someone , let me know that is practice here, so I don't go around to much

You have been given the answer, several times. This project is clearly beyond your abilities if you can't see that. Leave it someone else, or give up.

only two letters away from being an asset

Jalle2-Mar-08 5:25

2-Mar-08 5:25

Mark Nischalke wrote:
You have been given the answer, several times.

No I didnt get clear answer "several times" because probably no one here understands this matter, or maybe I was not clear enough.

Mark Nischalke wrote:
This project is clearly beyond your abilities if you can't see that. Leave it someone else, or give up.

No its not "beyond my abilities":

Imports System.Net.Mail<br />
Imports System.IO.Ports<br />
<br />
Public Class Service1<br />
<br />
    Public Names(25, 2) As String<br />
<br />
    Public Sub CheckBAH()<br />
        Dim strHTML As String = GetPageHTML("http://www.**********.aspx")<br />
        Dim pos As Integer = strHTML.IndexOf("")<br />
        strHTML = strHTML.Substring(pos, 200)<br />
        Dim Username As String = strHTML.Substring(3, strHTML.IndexOf("(") - 3).Trim<br />
        'Dim pin As String = strHTML.Substring(3, strHTML.IndexOf("(") - 3).Trim<br />
<br />
        Dim eur As Integer = strHTML.IndexOf("€")<br />
        Dim Prize As String = strHTML.Substring(eur - 10, 10)<br />
<br />
        Dim i As Integer<br />
        For i = 0 To 25<br />
            If Username.ToUpper = Names(i, 0).ToUpper Then<br />
                SendEmail(" Izvucen si ", Names(i, 0) & Names(i, 1) & Prize, "*************@yahoo.com")<br />
                'SendEmail(" Izvucen si ", Names(i, 0) & Names(i, 1) & Prize , "*************@yahoo.com")<br />
            End If<br />
        Next<br />
    End Sub<br />
<br />
    Public Function GetPageHTML(ByVal URL As String) As String<br />
        ' Retrieves the HTML from the specified URL<br />
        Dim objWC As New System.Net.WebClient()<br />
        Return New System.Text.UTF8Encoding().GetString(objWC.DownloadData(URL))<br />
    End Function<br />
<br />
    Public Function SendEmail(ByVal strSubject As String, ByVal strBody As String, ByVal strEmail As String) As String<br />
        Dim message As New MailMessage(strEmail, strEmail, strSubject, strBody)<br />
        Dim emailClient As New SmtpClient("out.mail.bih.net.ba")<br />
        Dim SMTPUserInfo As New System.Net.NetworkCredential("******", "******")<br />
        emailClient.UseDefaultCredentials = False<br />
        emailClient.Credentials = SMTPUserInfo<br />
<br />
        emailClient.Send(message)<br />
        Return 0<br />
    End Function<br />
<br />
    Private Sub InitializeComponent()<br />
        Me.components = New System.ComponentModel.Container<br />
        Me.Timer1 = New System.Windows.Forms.Timer(Me.components)<br />
        Me.SuspendLayout()<br />
        '<br />
        'Timer1<br />
        '<br />
        Me.Timer1.Interval = 1000<br />
        '<br />
        'Service1<br />
        '<br />
        Me.ClientSize = New System.Drawing.Size(292, 266)<br />
        Me.Name = "Service1"<br />
        Me.ResumeLayout(False)<br />
<br />
    End Sub<br />
<br />
<br />
    Public Sub ReadNames()<br />
        Names(0, 0) = "********"<br />
	.........<br />
        Names(25, 1) = "**********"<br />
    End Sub<br />
<br />
<br />
    Private Sub Timer1_Tick_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick<br />
        <br />
        Debug.Print(Internet)<br />
        'CheckBAH()<br />
    End Sub<br />
    Private Function Internet() As Boolean<br />
        Dim siteResponds As Boolean = False<br />
        Try<br />
            siteResponds = My.Computer.Network.Ping("www.google.com")<br />
        Catch ex As Exception<br />
<br />
            Return siteResponds<br />
        End Try<br />
        Return siteResponds<br />
    End Function<br />
<br />
    Private Sub Service1_Load_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load<br />
        ReadNames()<br />
        Timer1.Start()<br />
        <br />
    End Sub<br />
End Class<br />

Not Active2-Mar-08 8:50

Deleting a row from a GridView without affecting the DataBase!!!!

2-Mar-08 8:50

Listing code doesn't prove any ability beyond cut & paste, especially since its only VB.

Member 1648727 wrote:
probably no one here understands this matter, or maybe I was not clear enough.

I highly, highly doubt the former is true and it is quite arrogant of you consider it as an excuse. The statement proves, as I stated before, the concept is beyond you to understand and see that you have the answers.

only two letters away from being an asset

cosmoteco29-Feb-08 8:13

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 8:13

Hy!
I filled a GridView with some data from a table(obtained from a DataBase).
Now i have to delete some row, but i have to do this without deleting that information from the DataBase. It would be easy to use DataBase. I would obtain that table and fill that GridView again on the pageLoad, but i'm not aloud.
I really didn't find how to do this.
Please someone help! If this is possible.

Not Active29-Feb-08 8:50

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 8:50

How are you binding the data to the GridView? Are you using a DataTableAdapter or some other object? A DataTable or DataSet are in-memory representations of the data, so unless you are calling a method to delete the row directly in the database, you should only be working with a temporary copy of the data.

only two letters away from being an asset

cosmoteco29-Feb-08 10:07

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 10:07

I'm doing like this:

gridView.DataSource = table;
gridView.DataBind();

"table" is the table that i get from an SQL query. This piece of code, is integrated in a fillGridView function that i have, but i suppose this is what you are interested in.

Not Active29-Feb-08 11:08

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 11:08

And what is table? I'll assume it is a DataTable, in which case it is, once again, an in-memory representation of the data, not connected to the database from which you obtained it.

only two letters away from being an asset

cosmoteco29-Feb-08 12:38

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 12:38

I'm filling this gridView on the form's load. Now, every time i delete a row i redirect to the same page, i get the table from the database and fill the grid. Because i don't modify the database the table will always be the same. Supposing i fill it with a DataSet, which i modify every time i press delete, how do you suggest kipping that DataSet? It works if i use Session variables? I can't try it cause i don't have the code right now?

Not Active29-Feb-08 12:47

Re: Deleting a row from a GridView without affecting the DataBase!!!! [modified]

29-Feb-08 12:47

First don't delete rows one at a time, use a checkbox column to allow the users to select which rows to delete, then do it all at once. Or, yes cache the data, then update the database when completed. This isn't an unknown problem, there are a wide variety of articles on the subject.

only two letters away from being an asset

cosmoteco29-Feb-08 13:02

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 13:02

Probably the way i'm doing the fill now is putting me in a serious problem cause i'm not aloud to modify the database. First, it was made following this idea.
How should i proceed now?
Filling a dataset from a table then filling the GridView with a dataset?
Then I activate that delete button and so on?
I'll show you exactly the fillGridView function i have over 2 days.

modified on Friday, February 29, 2008 7:08 PM

Not Active29-Feb-08 13:40

Re: Deleting a row from a GridView without affecting the DataBase!!!!

29-Feb-08 13:40

Allowed != aloud

I don't need to see the code. Once you fill the dataset via your database query, the data has become disconnected from the database. I've told you this several times now.

only two letters away from being an asset

cosmoteco29-Feb-08 14:01