C# Discussion Boards - CodeProject

Re: Download a intranet site from a windows form (401 error)

28-Jul-09 22:14

Hello

I've got once again a problem with an application of mine..
Im building and application which checks a defined list of links. This windows form application should be able to run from any computer within our company. We have different security zones and we use a proxy configurated by with a automatic configuration script.
Now for internet website I haven't any problems. I just use the default proxy and fill the credentials with my user informations. But for the websites into the intranet it doesn't work like that. I just always get a 401 (unauthorized) error message.
I know that it's possible to solve that problem without knowing our network security exactly but hopefully anybody has an idea anyway. Smile | :)

Thanks a lot and best reagrds

Vimalsoft(Pty) Ltd29-Jul-09 2:03

Vimalsoft(Pty) Ltd

29-Jul-09 2:03

how does your application access the link ?

Vuyiswa Maseko,

Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."

C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
http://www.vuyiswamaseko.tiyaneProperties.co.za
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/

Re: Download a intranet site from a windows form (401 error)

Succodimele29-Jul-09 4:11

Re: Download a intranet site from a windows form (401 error)

29-Jul-09 4:11

Over the System.Net.WebRequest class

WebRequest request = WebRequest.Create(Path);
request.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
(HttpWebResponse)request.GetResponse();

Vimalsoft(Pty) Ltd29-Jul-09 4:34

Vimalsoft(Pty) Ltd

29-Jul-09 4:34

Remember the way you access your intranet is not the same way you access the internet. so i think you have to create a one function and detect if its internet or Intranet and extract the correct url for each

Re: Download a intranet site from a windows form (401 error)

Succodimele29-Jul-09 19:56

Re: Download a intranet site from a windows form (401 error)

29-Jul-09 19:56

hmm.. This I've already done. I was clear that I have to different between internet and intranet otherwise it had worked. But I dont know how can I access to the intranet.. Any idea?
Thanks for your help!

Succodimele29-Jul-09 20:15

How do I get the correct font height in Hindi fonts?

29-Jul-09 20:15

Now I just trey by chance the way to read the site over the System.Net.WebClient class and it worked pretty well. Smile | :)

Actually I have no idea where's the difference but for the moment it's enough, when it works. I'll try to find out why later..

Gywox28-Jul-09 22:05

Gywox

28-Jul-09 22:05

Hi, I want to draw a Hindi text with a bounding box around. Sample text "मैं हिन्दी नहीं बोल सकता हूँ।".
The problem is the last character with dependent vowel sign, the method misses the bottom part of the text.
0x0939, 0x0942, 0x0901 (devanagari letter ha, vowel sign uu, sign candrabindu)

C# code sample

string text = "मैं हिन्दी नहीं बोल सकता हूँ।";
Font font = new Font("Tahoma", 20.0f, FontStyle.Regular);
SizeF layoutArea = new SizeF(1000, 1000);
StringFormat stringFormat = new StringFormat();
SizeF measure = g.MeasureString(text, font, layoutArea, stringFormat);
g.DrawRectangle(Pens.Red, new Rectangle(50, 50, (int)measure.Width, (int)measure.Height));
g.DrawString(text, font, Brushes.Black, 50, 50);

I have also tried C++ functions GetTextExtentPoint32(), GetTextMetrics() and GetOutlineTextMetrics() to get the correct height but failed.

Any suggestions?
Thanks in advance,
Gywox

Re: How do I get the correct font height in Hindi fonts?

Nagy Vilmos28-Jul-09 22:19

Nagy Vilmos

28-Jul-09 22:19

I think you are getting the correct height, it is just there is an offset that means the text is down by a couple of pixies.

Panic, Chaos, Destruction.
My work here is done.

Re: How do I get the correct font height in Hindi fonts?

Gywox28-Jul-09 22:30

Gywox

28-Jul-09 22:30

Which method do I use to get the offset value? I can't find any such in the API.

Re: How do I get the correct font height in Hindi fonts?

Nagy Vilmos28-Jul-09 23:10

Nagy Vilmos

28-Jul-09 23:10

Do a bit of testing. There isn't anything that I know of that will tell you. From your code snippet, I took a screen print and you can see that the letters are being printed two px down from the square.

Panic, Chaos, Destruction.
My work here is done.

Re: How do I get the correct font height in Hindi fonts?

Gywox28-Jul-09 23:20

Gywox

28-Jul-09 23:20

Exactly, but if you select a larger font ("Tahoma", 80.0f) when the error becomes more. So I can't use a fixed value.

horizontal scroll bar move event...

spalanivel28-Jul-09 21:21

spalanivel

28-Jul-09 21:21

Hi,
The horizontal scroll bar is placed below the panel and when I am trying to move the scroll bar the event didn't get fired.

private void hScrollBar1_Move(object sender, System.EventArgs e)
{
MesasgeBox.Show("Scroll bar Moved");
}

When I am moving the scroll bar to left or right the above message box doesn't appear.

Regards,
Subbu

stancrm28-Jul-09 21:43

stancrm

28-Jul-09 21:43

I think, what you want is event "Scroll", and not "Move".

spalanivel28-Jul-09 22:00

spalanivel

28-Jul-09 22:00

Thanks for your reply...

But i don't want to scroll instead I will click the extreme right.

Suppose consider this is the horizontal scroll bar i want to move the contents of the panel by click the extreme right position(as shown in BOLD)

<------------------------------>

How to fire that event?? I tried with scroll it works fine for scrolling the bar and not working at the clicking of extreme right position.

How to acheive this?

Reg,
Subbu

spalanivel29-Jul-09 0:53

spalanivel

29-Jul-09 0:53

Any idea Please?

Just click the extreme right end and any events are there. I am using VS.Net 2003. (Bold position)

<-----------------------------> (horizontal scroll bar)

Reg,
Subbu

OOP approach, static method

Alan N29-Jul-09 2:03

Alan N

29-Jul-09 2:03

Hi,
In the other response it was suggested that you have subscribed to the Move event and the method signature given would support that hypothesis. What you need is the Scroll event.

Alan.

Raybarg28-Jul-09 20:46

Raybarg

28-Jul-09 20:46

Cutting right into my host of questions, here is a crackdown of my class:

class TheDocument
{
    private TheData[] _list;

    public TheDocument(TheData[] list)
    {
        _list = list;
    }

    public static void Print(TheData[] list)
    {
        TheDocument d = new TheDocument(list);
        PrintDocument pd = new PrintDocument();
        pd.PrintPage += new PrintPageEventHandler(d.PrintPage);
        pd.Print();
    }

    private void PrintPage(object sender, PrintPageEventArgs ev)
    {
        // Printing code...
    }
}

Explaining above code, I came to decide that I need no multiple instances of this document-printing class so I made static Print() method which will initialize the instance and does the trick. So from my application I can just call TheDocument.Print(...); and nothing else.

The question is, I couldnt find a way to pass around TheData[] array in other way than either trough constructor or after construction setting it to the instance of an object. This is where all my questions start to roam and I find myself a bit off track; This static method is instance of the calling instance? So within new TheDocument instance I have no access to it without reference?

All the printing stuff is merely serving as an example. My real world solution will inherit from more robust printing class and only contain the code for a specific type of document. I know theres plenty of 3rd party solutions for document designing and using them to print, but I will have host of different types of "simple list" kind of documents to print and decided to take this brute approach.

Coming from VB and C(embedded) programming all this OOP and fancy C# stuff are so overwhelming Wink | ;)

Feels like I need proper OOP course or something since I dont even know if there is a term to call class with static method which will make instance of the class itself in it. Or if the whole class is static, is there a name for it instead of saying "static class". Another question about OOP I would ask is if I have alot of variables or properties in one object and define new object in it, what is the best way of accessing those variables or properties. Handing out reference to "parent" object kind of makes that approach less encapsulated?

Christian Graus28-Jul-09 21:00

Christian Graus

28-Jul-09 21:00

Your method seems to me that it should not be static, because it wants to use the member data of the class instances. Unless you will have a TheData[] on hand, but no TheDocument class, and just want to print it.

The easiest way to pander to both is to write a method like this

public void Print()
{
TheDocument.Print(this._list);
}

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

DaveyM6928-Jul-09 22:41

DaveyM69

28-Jul-09 22:41

Generally, static methods shouldn't be creating instances of the class they 'live' in. If a static method requires access to instance fields/properties/methods then it should probably not be static as it's working on instance data. A general exception is in situations where an instance wouldn't previously exist but will do at the end of the method. A good example is int.Parse. This (in it's simplest form) takes a string as a parameter and it creates an int from it. It would make no sense to have this as an instance method in the int struct as until the string is parsed, there is no int.

In your situation, your Print method is obviously related to a TheDocument instance so I would remove the static and the parameter. If I wished it to be static for convenience, I would rename it to PrintTheDocument, so it's obvious the method is only for printing TheDocument instances, and take an instance of the class as a parameter,

public static void PrintTheDocument(TheDocument theDocument)
{       
    // ...     
}

though there's no advantage to be had as you could simply call

theDocument.Print();

instead of

TheDocument.PrintTheDocument(theDocument);

.

There is another common occaision when a static will create an instance, and this can be very useful. This is when creating a 'singleton[^]'.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

Raybarg28-Jul-09 23:04

Raybarg

28-Jul-09 23:04

Since I got 2 replies already saying its "weird" to have static method like that, I changed it.

Now instead of simply calling TheDocument.Print(...); I first have to create instance oobject of it;

TheDocument doc = new TheDocument(TheList);
doc.Print();

And I already feel more confident that this is more "proper". Atleast with this approach I can in the future derive from IDisposable interface if I ever need, and this approach more easily yields to using. I guess.

For the sake of making it more readable to "end user of the class" should I consider using a property for "the list", like .WhateverThisListIs = TheList?

DaveyM6928-Jul-09 23:39

DaveyM69

28-Jul-09 23:39

It depends - not very helpful I know!

If they need array elemement level access then probably yes.

Imagine if your document was basically a header, body and footer - all strings. Something like this would be a good way of exposing it.

public class TheDocument
{
    private string[] theData = new string[3];

    public TheDocument()
        : this(new string[] { string.Empty, string.Empty, string.Empty })
    { }
    public TheDocument(string body)
        : this(new string[] { string.Empty, body, string.Empty })
    { }
    public TheDocument(string header, string body)
        : this(new string[] { header, body, string.Empty })
    { }
    public TheDocument(string header, string body, string footer)
        : this(new string[] { header, body, footer })
    { }
    // This constructor is used by all constructors
    private TheDocument(string[] data)
    {
        if (data.Length == 3)
            theData = data;
        else
            throw new ArgumentOutOfRangeException("data", "Data must have a length of 3");
    }

    public static implicit operator TheDocument(string[] data)
    {
        return new TheDocument(data);
    }
    public static implicit operator string[](TheDocument theDocument)
    {
        return theDocument.theData;
    }

    public string Header
    {
        get { return theData[0]; }
        set { theData[0] = value; }
    }
    public string Body
    {
        get { return theData[1]; }
        set { theData[1] = value; }
    }
    public string Footer
    {
        get { return theData[2]; }
        set { theData[2] = value; }
    }

    public void Print()
    {
        PrintTheDocument(this);
    }
    // This method handles all the printing
    public static void PrintTheDocument(TheDocument theDocument)
    {
        // ...
    }
}