Re: Launch Console Applications in the background - C# Discussion Boards

Re: C# operator overloading is very limited

Orantho22-Dec-02 22:06

22-Dec-02 22:06

Thanks for the suggestion. I'll definitely consider it. The only thing that I don't really like is the fact that I have to program each field separately. You'll get total flexibility at a price.

Internet Connections

Dave Kerr22-Dec-02 5:19

Dave Kerr

22-Dec-02 5:19

How can I find out programmatically if there is a dial-up connection to the internet in C#? I've looked through the MSDN stuff but it's heavy goinga as I've done no internet coding before. All I need to be able to do is check for internet connections, and if there are any, then disconnect them.

Dave Kerr
focus_business@hotmail.com
www.focus.esmartweb.com

Delegate/Event question

Rocky Moore21-Dec-02 22:49

Rocky Moore

21-Dec-02 22:49

This might be a simple question to some but has caused me a few too many brain cells. I do not see any way possible to conditionally use an event. That is, in a standard class you can override the method and then if you choose, you can call the base class to execute that code. As a multicast event will call the handlers in order they where added, I can see no way to bail and revert to some default processing if certian conditions arise from within your handler.

Wondering if this has ever been an issue..

Rocky Moore

Re: Delegate/Event question

leppie22-Dec-02 1:31

leppie

22-Dec-02 1:31

Some derived classes of EventArgs contains a Handled property that can be set to true.

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Launch Console Applications in the background

Shock The Dark Mage21-Dec-02 18:59

Shock The Dark Mage

21-Dec-02 18:59

I'm making an IRC Bot for statictics and I need to launch it into the background(like eggdrop). This bot runs in linux with mono(Free .NET Implantation).

Does anybody has any clue about this?

Trully, if there evil in this world,
It lies within the heard of mankind

Shock The Dark Mage
shock@romhack.net
Main Project: Aeru IRC - http://www.sf.net/projects/aeruirc

Re: Launch Console Applications in the background

leppie21-Dec-02 23:10

leppie

21-Dec-02 23:10

If I remmeber correctly you add an ' &' to the command line in Linux, this will run the process in the background. Hope it works, let me know Smile | :)

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: Launch Console Applications in the background

Shock The Dark Mage22-Dec-02 4:19

Shock The Dark Mage

22-Dec-02 4:19

Thanks again leppie, but if you know how to program it in the program rather than using the &, let me know.

Trully, if there evil in this world,
It lies within the heard of mankind

Shock The Dark Mage
shock@romhack.net
Main Project: Aeru IRC - http://www.sf.net/projects/aeruirc

Re: Launch Console Applications in the background

Arun Bhalla26-Dec-02 13:14

Arun Bhalla

26-Dec-02 13:14

In UNIX, in order to have the program put itself in the background, it needs to fork a child process. True system daemons are double-forked. The first fork puts the program in the background, the second fork isolates itself from the current process group (e.g., a user's session). However, Windows has never supported the concept of fork(), so it would be surprising to see it in .NET.

It appears that Mono is closely following the .NET SDK to make sure that Mono (.NET) programs are cross-platform, but in case there is a concept of fork() within Mono, go with that. For a 100% pure .NET cross-platform program, I'd suggest you take a peek at System.Diagnostics.Process.

Find String in a Large String

Steve McLenithan21-Dec-02 16:24

Steve McLenithan

21-Dec-02 16:24

I need to find a smaller string of characters inside a larger string, but have no idea how to go about it. I know there is the 'SubString' method, but that will not work in this case, as the sting i am looking for will be in different locations withing the large string, or it may not be in there it all.

I am just trying to test for it's existance(true/false).

Any help would be appreciated.

********************
* $TeVe McLeNiThAn
********************

Re: Find String in a Large String

Rob Graham21-Dec-02 16:51

Rob Graham

21-Dec-02 16:51

See String.IndexOf method in help. This returns the integer index of the first character of a substring in another string, -1 if not foune, 0 if the substring requested is an empty string. Smile | :)

Some ideas are so stupid that only an intellectual could have thought of them - George Orwell

Re: Find String in a Large String

Thong Nguyen21-Dec-02 22:29

Thong Nguyen

21-Dec-02 22:29

Hmmm the documentation for String isn't that difficult to follow!

Try String.IndexOf(String)

MDB to Text

Jassim Rahma21-Dec-02 9:46

Jassim Rahma

21-Dec-02 9:46

How can export specific record(s) in MS Access mdb file to text comma seperated file?

Jassim

Re: MDB to Text

David Stone21-Dec-02 10:19

David Stone

21-Dec-02 10:19

I would look at pulling the stuff into a DataSet and then exporting it as XML instead of csv files. Why do you need it as a text file?

I don't know whether it's just the light but I swear the database server gives me dirty looks everytime I wander past.
-Chris Maunder

Microsoft has reinvented the wheel, this time they made it round.
-Peterchen on VS.NET

Re: MDB to Text

jassim21-Dec-02 10:26

jassim

21-Dec-02 10:26

ok but can you tell me about the following :

1. can I have a sample code please?
2. Can I protect the XML file with password so that no body will be able to view the contents?

Many Thanks,

update stausBar

Jassim Rahma21-Dec-02 9:44

Jassim Rahma

21-Dec-02 9:44

How can I update the MDI container statusBar text from the MDI child? can I have an example please...

Jassim

Extended MAPI and C#

Anonymous21-Dec-02 6:07

Anonymous

21-Dec-02 6:07

Has anyone delved into the deep dark secrets of Outlook connectors with C#?

All the references I have seen ("Inside MAPI" and MSDN) show C++ references. In particular, each connector type has a set of launch functions (the main one of which basically goes "create me a COM object and return it") and a set of COM enabled classes.

Now, I'm guessing here that I can fairly reasonably create the COM Classes using COM Interop. What is mystifying me is how do I deal with the launch functions within a C# DLL?

Any ideas?

-Adrian

Control Properties

Dave Kerr21-Dec-02 0:52

Dave Kerr

21-Dec-02 0:52

Hi,
I've written a custom windows control, that displays an OpenGL scene, but I'm having troubles with it's properties. I can programmatically modify the properties fine, adding objects etc. I can also do this at design time, using the properties window. However, any changes I make at design time don't last, as soon as I run the program, it resets to it's default properties, and then resets in the design window too.
I'm I missing something here? Do I need a special attribute to tell properties to persist, and shouldn't they persist anyway? Otherwise all these design time properties I've added are rather pointless.

Cheers,

Dave

Dave Kerr
focus_business@hotmail.com
www.focus.esmartweb.com

Re: Control Properties

Burt Harris21-Dec-02 11:28

Burt Harris

21-Dec-02 11:28

I did some work with this a while back. I remember it got tricky depending on the type of your properties.

There is a DesignerSerializationVisibilityAtttribute you can apply to change the default designer serialization behavior. If the property is a collection, you may need

[DesignerSerialzationVisibility(DesignerSerialization.Content)]

and a property get that returns the collection.

If you property values are instances of some custom type, you may need to use the DesignerSerializerAttribute.

More detail about the type of the property might be useful.

Burt Harris

HTTP Read w/ Authentication

Larry Rutledge20-Dec-02 11:27

Larry Rutledge

20-Dec-02 11:27

I used the following code to download the source of an HTML page:

<br />
  ...<br />
  try<br />
  {<br />
    // _url is a private variable which contains the URL to download<br />
    HttpWebRequest _request = (HttpWebRequest)WebRequest.Create(_url);<br />
<br />
    if (_useProxy)<br />
    {<br />
      WebProxy _proxy = new WebProxy(_proxyHost + ":" + _proxyPort.ToString());<br />
      _request.Proxy = _proxy;<br />
    }<br />
<br />
    HttpWebResponse _response = (HttpWebResponse)_request.GetResponse();<br />
<br />
    if (_response.StatusCode == HttpStatusCode.OK)<br />
    {<br />
      Stream _stream = _response.GetResponseStream();<br />
      StreamReader _streamReader = new StreamReader(_stream, Encoding.UTF8);<br />
      MessageBox.Show(_streamReader.ReadToEnd().Trim());<br />
    }<br />
  catch (WebException we)<br />
  {<br />
    // HTTP response was not "OK", handle HTTP error<br />
  }<br />
  catch (Exception e)<br />
  {<br />
    // Handle exception<br />
  }<br />
  ...<br />

My question is, what if the page I need to access requires authentication. In other words, when browsing normally, with a web browser client, a dialog pops up asking for my username and password. I have the access information, but I want the preceding code to be able to send that authentication information along and get the code without any user intervention.

Any ideas?

Re: HTTP Read w/ Authentication

leppie20-Dec-02 17:15

leppie

20-Dec-02 17:15

Passing http://user:pass@www.website.com/ should work. Smile | :)

WebBoxes - Yet another collapsable control, but it relies on a "graphics server" for dynamic pretty rounded corners, cool arrows and unlimited font support.

Re: HTTP Read w/ Authentication

Burt Harris21-Dec-02 9:53

Burt Harris

21-Dec-02 9:53

Authentication information is handled via the HttpWebRequest.Credentials property. You can set this to either an instance of NetworkCredential or CredentialCache. See the help under these two classes.

If your using Windows authentication (typically only in a corproate intranet scenario) this works to provide the credentials the current use is logged in with:

request.Credentials = System.Net.CredentialCache.DefaultCredentials;

Burt Harris

DirectX 9.0 Released

Heath Stewart20-Dec-02 9:26

Heath Stewart

20-Dec-02 9:26

DirectX 9.0 has been released on MSDN! See http://msdn.microsoft.com/library/default.asp?url=/downloads/list/directx.asp[^] for more information and downloads. It's hefty, but I'm sure it's worth if for all .NET'izens that have been waiting for managed DirectX!

"Well, I wouldn't say I've been missing it, Bob." - Peter Gibbons

Does this type of Windows Tree Control exist???

LongRange.Shooter20-Dec-02 9:08

LongRange.Shooter

20-Dec-02 9:08

I want to contruct a tree view ... but instead of vertical expansion, I want it to expand out horizontally. The intent is to present a navigation view going left to right. Has anyone seen a control like this?

Thanks

_____________________________________________
_{The world is a dangerous place.
Not because of those that do evil,
but because of those who look on and do nothing.}

Re: Does this type of Windows Tree Control exist???

Kannan Kalyanaraman20-Dec-02 18:29

Kannan Kalyanaraman

20-Dec-02 18:29

What kind of application would use this kind of control, wouldn't it give uneasy feeling to the user, because most controls only do a vertical scroll and horizontal scroll only when things could not be shown on the fullscreen.

Kannan

Re: Does this type of Windows Tree Control exist???

LongRange.Shooter23-Dec-02 2:43

LongRange.Shooter

23-Dec-02 2:43

Kannan,

I stated the application in my post: it is a Navigation view. And moving left to right is more natural than an expanding tree that moves up and down. As to scroll bars....I never said anything about scroll bars in my question.

_____________________________________________
_{The world is a dangerous place.
Not because of those that do evil,
but because of those who look on and do nothing.}

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