C# Discussion Boards - CodeProject

leppie6-Jul-04 7:26

leppie

6-Jul-04 7:26

Create an instance of a XmlNamespaceManager , and apply those extra namespaces, then pass the instance to SelectSingleNode()

^{top secret xacc-ide 0.0.1}

Re: C#, XML, XPath problem

velincho6-Jul-04 22:23

velincho

6-Jul-04 22:23

Thanks Leppie. I'll try it!

HOW TO CREATE IMAGE FRAMES FROM METAFILES

gayathri_gopi5-Jul-04 22:22

gayathri_gopi

5-Jul-04 22:22

Can i create image frames from metafiles.

My program works for creating image frames from any types of images, but not from metafiles.

Can i know how to create image frames from metafile images and also for a combination of metafile images and others like gif,jpeg..?

DllImport

Anonymous5-Jul-04 22:12

Anonymous

5-Jul-04 22:12

I am having 2 unrelated problems and was hoping one of you would be able to help me.
Firstly i have just downloaded the directX SDK, I know how to include the libraries in VS6 but i'm now using 2003 and i don't know what to do to get the IDE to recognise
using System.Microsoft.DirectX;

Secondly, i am trying to use the DllImport attribute but am getting a message saying the type or namespace "DllImport" could not be found. The line of code is
[DllImport("user32.dll")]
Followed by a function definition

Any help that you guys can give me to solve these problems would be greatly appreciated.

Re: DllImport

Anonymous5-Jul-04 22:26

Anonymous

5-Jul-04 22:26

I have figured out the DllImport problem, i wasn't including the
System.Runtime.InteropServices;

Still having the directX problem though.

Re: DllImport

Stefan Troschuetz5-Jul-04 22:43

Stefan Troschuetz

5-Jul-04 22:43

1. It sounds like you missed to add a reference for the library. The using directive only permits the use of types in a namespace, such that, you do not have to qualify the use of a type in that namespace.
To reference the library, go to the solution explorer, right-click on References and select "Add reference".

2.
You'll have to import the types of System.Runtime.InteropServices namespace to use the DllImportAttribute Class the way your doing.

using System.Runtime.InteropServices;
[DllImport("user32.dll")]
Followed by a function definition

DirectX

Anonymous6-Jul-04 3:16

Anonymous

6-Jul-04 3:16

OK, sorted the DllImport problem, thanks.

Back to directX. What you are saying is true, i am missing the reference to the assembly but, DirectX is huge, you wouldn't add a reference to each DLL manually.

In Visual Studio 6, you added a reference to the relevant library folder and include folder, then you could just use the functions as though they were system functions. In 2003, if you include the relevant libraries then you can either use the fully qualified namesapce
Microsoft.DirectX.DirectDraw etc
or have a using statement as you would with any other system library.

Anyone that knows what i am doing wrong, i have installed directX SDK 9, or knows of a good tutorial for getting up and running with managed DirectX, your help would be appreciated.

Re: DirectX

Stefan Troschuetz6-Jul-04 3:48

Stefan Troschuetz

6-Jul-04 3:48

There are some articles[^] available here on CodeProject.
Also there is a preliminary documentation on MSDN[^]

Is it possible to edit a bitmap programmatically?

Pain_Elemental5-Jul-04 21:14

Pain_Elemental

5-Jul-04 21:14

Hi all,
has anybody ever tried to edit a bitmap programatically?
I have a bitmap of a printed circuit board, but around the board are white margins.
I would like to remove the white margins in my program.

Is this possible?

Best Regards
Bernd

-------------------------------------------
The light at the end of the tunnel has been switched off temporarily due to budget problems...

Re: Is it possible to edit a bitmap programmatically?

Dave Kreskowiak6-Jul-04 5:17

Dave Kreskowiak

6-Jul-04 5:17

Of course it is. Programs like Photoshop do this all the time. The real question is how your going to detect the edge between the image and the white space you want to get rid of and what you want to do about it. DO you replace it with the green PCB or do you crop the image. There are all kinds of algorithms around for edge detection, but what will work for you is up t your own testing and research.

Edge Detection Algorithm[^] searh results on Yahoo.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Is it possible to edit a bitmap programmatically?

Pain_Elemental6-Jul-04 19:50

Pain_Elemental

6-Jul-04 19:50

Thanks!
I'll have a look at this.

-------------------------------------------
The light at the end of the tunnel has been switched off temporarily due to budget problems...

Wanna Disscussion Forum

RadhaKrishan5-Jul-04 21:14

RadhaKrishan

5-Jul-04 21:14

I am not familiar with Discussion Forum.

Re: Wanna Disscussion Forum

Dave Kreskowiak6-Jul-04 4:57

Dave Kreskowiak

6-Jul-04 4:57

What's not to understand? You go there, you post questions, you read responses and replies... You obviously got part of it right, you posted something here.

I take it you had a more specific question about some discussion forum software?

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

List of installed fonts ?

sachinkalse5-Jul-04 20:34

sachinkalse

5-Jul-04 20:34

How to get the list of installed fonts corresponding to any perticular charactor set? eg. if I want to get Japanese supporting font list (corresponding to char set Shift_JIS), how to do it?
please guide

Re: List of installed fonts ?

Heath Stewart6-Jul-04 6:03

Heath Stewart

6-Jul-04 6:03

You can get a list of the installed fonts by instantiating System.Drawing.Text.InstalledFontCollection. Enumerate through the FontFamilies array property. This information won't tell you about which character set the font supports, however. Character sets and fonts are two separate things. Perhaps there's a few bits in a font file that determine which charset a font supports, but I'm not aware of any.

The only way to tell is to either try drawing a character from that charset using that font and see if it works, or create some sort of font driver that lets you dig into the actual font data, which would be quite a feat since you need to somehow use the font handle to get the actual font file and examine the structure. Also keep in mind that there's many different types of font files, so this would be a very difficult task.

Microsoft MVP, Visual C#
My Articles

Adding extra attribute / event to web control

Member 11955125-Jul-04 20:10

Member 1195512

5-Jul-04 20:10

Is it possible to add our own attribute / events to web control (if it is not supporting) to increase functionality

Re: Adding extra attribute / event to web control

Colin Angus Mackay5-Jul-04 21:00

Colin Angus Mackay

5-Jul-04 21:00

Yes, you derive a class from the web control and add the properties. The following article on MSDN gives you a starting point, it uses the generic Control as the base, but you can derive from other existing controls as well.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/html/cpconwalkthroughdevelopingsimplewebformscontrol.asp[^]

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

The Second EuroCPian Event will be in Brussels on the 4th of September

Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!

My Blog

How to Invoke methods declared in the dynamically loaded Assembly?

ganeshvijay5-Jul-04 19:46

ganeshvijay

5-Jul-04 19:46

Hi
How v can Invoke the methods that r declared in an a project(Dll) which is loaded dynamically into our project?

Is the MethodInfo class's Invoke methoda will do the job?
What does the first parameter in the second overloaded method of "Invoke" mean?

Pls help me with sample codes!!

Re: How to Invoke methods declared in the dynamically loaded Assembly?

MKlucher5-Jul-04 20:52

MKlucher

5-Jul-04 20:52

Here's a couple of links on this site, hope they help.

http://www.thecodeproject.com/csharp/dyninvok.asp[^]

http://www.thecodeproject.com/csharp/unmanage.asp[^]

Moon Boy5-Jul-04 18:25

Moon Boy

5-Jul-04 18:25

Hi, i wanna know how can i get a cookie

for example:

mypage.com/login.html

This, have a form to login, so:
mypage.com/login.html?user=teste&pass=test

Will login with User= teste and Pass = test
Im just trying to get the COOKIE, provided by login.html after the login.

What can i use?

Thanks

Re: Cookie

Heath Stewart5-Jul-04 19:03

Heath Stewart

5-Jul-04 19:03

First of all, this really belongs in the Web Developer forum. This forum is for questions relating to C#, which can be used to create ASP.NET web applications that parse, compile, and execute code on the server so format and stream HTML to (and other files) to the browser or other client application using HTTP.

Second, if you want to use ASP.NET, then by default the pages use the .aspx extension, not .html.

Third, by using .html extensions, you are implying that you want to do this using client-side scripting, since .html is, by default, not a CGI-parsed extension on any system without actually remapping file extensions.

Fourth, are you kidding? Passing the username and password in a query string is the most insecure method ever conceived! You might as well eliminate authentication. You pass username and passwords using POST (not GET) and you should use SSL over HTTP (HTTPS) if this is sensitive information. Even without using SSL, using POST at least doesn't store the username and password in the browser's history like this would.

After taking all that above into account, how you do this depends on what server you're using and lots of other information. Again, I suggest you ask this in the Web Developers forum.

Microsoft MVP, Visual C#
My Articles

Re: Cookie

Moon Boy5-Jul-04 19:07

Moon Boy

5-Jul-04 19:07

Well, u dont understand...

I trying to acess a protected page with HttpWebRequest...but i need get the cookie first, to put in the CookieCollection :\

Re: Cookie

Heath Stewart5-Jul-04 19:09

Heath Stewart

5-Jul-04 19:09

Moon Boy wrote:
Well, u dont understand

No, it's you that don't understand. First of all, this isn't even using cookies. This is a query string, and if you have questions about ASP.NET (which your URLs didn't show at all, since they use the .html files which are typically staticly delivered on the server) they belong in the ASP.NET forum.

If you're using the HttpWebRequest to access this site, then you need to pass the query string parameters as part of the URL. If the site is using cookies, then instantiate a new CookieContainer and add a Cookie. The documentation for the HttpWebRequest.CookieContainer property in the .NET Framework SDK even gives an example of how to do this. Consulting the documentation should be the first place you check.

Also, when you want to reply to someone in the CodeProject forums, click "Reply" on the message to which you want to reply.

Microsoft MVP, Visual C#
My Articles

Re: Cookie

Moon Boy5-Jul-04 19:16

Moon Boy

5-Jul-04 19:16

;\ Sorry and thanks man

How to add Textbox's PasswordChar property in PropertyGrid Control?

god4k5-Jul-04 15:48

god4k

5-Jul-04 15:48

Dear, Sir and Madam.

I want to add PasswordChar Property which shows ****** for string which I
type in PropertyGrid Control.

Regards.

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