Re: ResourceManager Question - C# Discussion Boards

josefg24-Apr-04 3:41

24-Apr-04 3:41

Hi,

I made 2 custom controls, both of which have a default constructor. The problem is that when I try to drag one of them into the form from the toolbox, I get a message saying that an exception occured while trying to create an instance of the control. The exception text is "Object reference was not set to an instance of an object."

Now with the other control, it works Ok when I drag it onto the form and works as expected when I run the program, however if I try to delete it from the form I also get an "Object reference was not set to an instance of an object." exception.

Can you please help me locate the source of this error?

Thanks for your help.
Josef

Re: Windows Form Designer Error

josefg24-Apr-04 7:32

josefg

24-Apr-04 7:32

Problems found and fixed.

Thanks,
Josef

ServiceProcessInstaller.UserName and password inaccessible

jiagia23-Apr-04 22:41

jiagia

23-Apr-04 22:41

hi, am trying to load values from config file in windows service project installer but it fails to load, then i tried to load that config file using xmldom, it worked but in this way installer looks for the file in system32 directory rather than in my installation directory.
How can i do that Confused | :confused:

Re: ServiceProcessInstaller.UserName and password inaccessible

Heath Stewart24-Apr-04 10:37

Heath Stewart

24-Apr-04 10:37

The application's .config file is read from the same directory as the application executing your installer - not the installer itself. So, if you use the installutil.exe, then installutil.exe.config is used from the same directory where installutil.exe is executed (not the current working directory).

You should typically not use .config files with installers for this reason - your installer class is typically contained in a DLL and executed by something else. Instead, accept command-line parameters which make it more flexible, easy to document (see the Installer.HelpText virtual property), and easy to use even with Windows Installer packages (which you can pass properties as command-line parameters.

See the Installer.Context property documentation in the .NET Framework SDK for more information and an example of how to get those properties from the installer's context.

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sending xml

hmdhmd23-Apr-04 22:13

hmdhmd

23-Apr-04 22:13

hi
i`m new user in code project
my name is hmd
i want your help ..

1 - who can sending data bitween client , server by using
xml form.
I `m wating ......
thank you

Re: sending xml

Nick Parker24-Apr-04 7:30

Nick Parker

24-Apr-04 7:30

hmdhmd wrote:
who can sending data bitween client , server by using
xml form.

Anyone, however if you have a specific question, try asking that.

- Nick Parker
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ResourceManager Question

hammackj23-Apr-04 19:16

hammackj

23-Apr-04 19:16

I cant find this error in the msdn help file. Wanted to know if anyone had a clue on what it was. Arxopia-En is a DLL that compiles and has a few string resources in it. This is just a snip of the code but it is the only part of the code that uses the RM atm. Do i need to provide more info, just cant seem to figure out the meaning of this error.

Assembly generation -- Referenced assembly 'Arxopia-EN' is a localized satellite assembly

<br />
namespace HammackJ.Arxopia.Engine<br />
{<br />
	using System;<br />
	using System.Resources;<br />
	using System.Reflection;<br />
	using System.Text;<br />
	using Arxopia;<br />
	using Arxopia.Resources; //This is the namespace of the Arxopia-EN.dll<br />
<br />
	public class Menu<br />
	{<br />
		ResourceManager rm;<br />
<br />
	        public Menu()<br />
		{<br />
			rm = new ResourceManager("Arxopia.Resources.Arxopia_En.GameStrings", Assembly.GetAssembly(typeof(Arxopia.Resources.Arxopia_En)));<br />
									<br />
		}<br />
        }<br />
<br />

Re: ResourceManager Question

Heath Stewart24-Apr-04 10:34

Heath Stewart

24-Apr-04 10:34

You can't explicitly reference satellite assemblies - Fusion does this automatically.

The satellite assemblies contain localized values (text or binary data encoded as text, typically using base64) for information in your primary assembly. So, if you create a new ResourceManager against, say, a Form derivative then a .resources embedded resource is used (if available) to find those localized resources. If the current Thread.CurrentUICulture</code. is different or you pass a specific <code>CultureInfo to something like ResourceManager.GetString or ResourceManager.GetObject, then a corresponding satellite assembly is searched for and loaded if available, otherwise the resources in your primary assembly - the neutral language resources - are used (or a culture-independent language, if available). This lookup can be avoided for neutral resources if you use the NeutralResourcesLanguageAttribute and set that to your culture-specific language which you use for the primary assembly (like I would use "en-US"). This can boost performance when using localized resource classes like the ResourceManager.

See Resources in Applications[^] in the .NET Framework SDK for more information.

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Re: ResourceManager Question

hammackj24-Apr-04 11:02

hammackj

24-Apr-04 11:02

Thanks a ton again sir. I had En in the [assembly: AssemblyCulture("")] tag in the assemblyinfo.cs. Now it complies correctly.

Again thank you for your help.

-hammackj

Re: ResourceManager Question

Heath Stewart25-Apr-04 4:14

Heath Stewart

25-Apr-04 4:14

You also shouldn't name your assembly with "EN" in the name, if you did that. Make sure you read that link I gave you. Your assembly name should be something simple, like MyCompany.MyProduct or something, and includes the neutral resources. If that's "en-US", then no satallite assemblies would need to be loaded but you still don't name your primary assembly with culture identification - it's just not proper and your satallite assemblies become oddly named an confusing.

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chat program

azhar_engineers23-Apr-04 19:00

azhar_engineers

23-Apr-04 19:00

how to make a chat program one server multi client by c#
note that :
each client can talk with the server only.
all clients can send and receive to/from server .

sameer

Re: chat program

Tomas Petricek24-Apr-04 5:10

Tomas Petricek

24-Apr-04 5:10

This can be very simply done using web services.
You can create web service with method for sending messages and method for geting content of chat window.
You can store messages on server in database or simply in memory or xml file.
Also creating client that uses web services is simple.

You can see tutorial about using web services here http://samples.gotdotnet.com/quickstart/aspplus/doc/webservicesintro.aspx[^].

Tomáš Petříček
[My Photos] [My Homepage]
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Re: chat program

Heath Stewart24-Apr-04 10:28

Heath Stewart

24-Apr-04 10:28

.NET Remoting over a TcpChannel would be even better, however. Using XML Web Services forces the chat clients to poll for new messages, while a .NET Remoting object that exposed events could notify - it not send - the new messages to the clients immediately.

Since Web Services uses HTTP for the transport channel, they are bound by the HTTP protocol which is stateless and one-way by nature.

See the article, Applying Observer Pattern in .NET Remoting[^] for a decent example.

Microsoft MVP, Visual C#
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Re: chat program

Tomas Petricek24-Apr-04 10:39

Tomas Petricek

24-Apr-04 10:39

You are right.
Using web services for more complex chat application isn't good way, but I think that solution with web services is good enough for simple chating application (if there are only few users). And I tought that azhar ( Confused | :confused:

I'm not sure with name) wants something more simple.

Tomáš Petříček
[My Photos] [My Homepage]
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Asp.Net Popup control

Re: chat program

Heath Stewart25-Apr-04 4:09

Heath Stewart

25-Apr-04 4:09

Web Services really don't make things any simpler, though. Remember that if you poll for messages, the server has to keep track of messages since the last time the client polled, and the clients - even a relatively small number of them - won't poll at the same time so the message queue would have to be associated with each client or you'd have to implement some algorithm where you keep track of the number of clients connected and clear the queue after that many requests for messages. With that, you have to worry about abnormal client termination to decrement that count.

With .NET Remoting, the message just gets broadcast to the connected clients and that's it. .NET Remoting isn't nearly as hard as many think it is.

Microsoft MVP, Visual C#
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How to capture IE output of displaying an XML file?

forgiven4u23-Apr-04 14:28

forgiven4u

23-Apr-04 14:28

Hello everyone...this is my first question on this forum, I'm using Internet Explorer 6 for syntactically checking XML documents (mainly to detect unclosed tags) in my application.

How can I capture the output of Internet Explorer after it parses the file so I can display it on my application?

Is it a must to use a COM object for applications interaction?

Thanx in advance for all ppl contributing to this beautiful website Cool | :cool:

Re: How to capture IE output of displaying an XML file?

Heath Stewart23-Apr-04 16:07

Heath Stewart

23-Apr-04 16:07

Why don't you just read it into an XmlDocument or an XmlTextReader, which will verify that it's well-formed. Using Internet Explorer - which actually uses MSXML - is totally unnecessary and very inefficient. Once you've got it into an XmlDocument, you can perform XSL transformation, XPath queries, or just navigate and modify the DOM. If you use an XmlTextReader, you could just read it in as text.

If you want to validate it against a schema - something Internet Explorer/MSXML doesn't do automatically - you can use an XmlValidatingReader.

Just see the documentation for these classes in the .NET Framework SDK for more information and examples.

Microsoft MVP, Visual C#
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Re: How to capture IE output of displaying an XML file?

forgiven4u24-Apr-04 14:59

forgiven4u

24-Apr-04 14:59

Thanx Heath, the thing is that I want to know how get an output of any program that you launch within the code. say that IE returned an error, can I detect that and show it to the user?

Using those classes is my next task, first I have to use IE for syntax checking..it is a must.

Re: How to capture IE output of displaying an XML file?

Heath Stewart25-Apr-04 4:19

Heath Stewart

25-Apr-04 4:19

forgiven4u wrote:
first I have to use IE for syntax checking

That's what I'm getting at - the XML classes in the .NET Framework check for well-formedness and perform schema validation if you want. This will return you were the error is and let you fix it. You're really taking a backward approach to doing something so simple. Remember, IE isn't even the one validating your XML well-formedness (it doesn't do schema validation) - it's MSXML which IE uses.

forgiven4u wrote:
the thing is that I want to know how get an output of any program that you launch within the code.

There is no universal way of doing this. Sometimes you can redirect stdout and stderr, sometimes you can use the Windows APIs to get Window text, and sometimes you must read a DOM. Every application is designed differently.

forgiven4u wrote:
say that IE returned an error, can I detect that and show it to the user?

If you used the XML classes in .NET, you wouldn't have to worry about this because any invalid XML will throw an exception while loading, giving you the information to present to the user so they can fix it. Besides, if IE is visible, it will display the error.

Microsoft MVP, Visual C#
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Re: How to capture IE output of displaying an XML file?

forgiven4u25-Apr-04 5:07

forgiven4u

25-Apr-04 5:07

Thanks again Heath, redirecting stdout & stderr is one cool technique I was seeking. I want to execute a program (no IE) and get it's output.

Such attentive people like you makes the world a better place. Smile | :)

dynamically add/remove reference for a specific configuration

Glaxo23-Apr-04 13:49

Glaxo

23-Apr-04 13:49

Do you know the answer how to add/remove references for specific configuration?
I have 2 configurations in my project, "Debug" and "Release" (as usual). I also use a NUnit and other tools that help to develop stable applications. In order to use NUnit I have to add reference: "nunit.farmework" to the list of all project references.
My problem that I don't want to add the reference in the "Release" configuration, I don't want to install NUnit or even copy nunit.framework.dll to the client machine.
Do you know a way to "dynamically add/remove reference for a specific configuration?"
Could reflection help?
Thanks in advance

Re: dynamically add/remove reference for a specific configuration

Daniel Turini23-Apr-04 14:21

Daniel Turini

23-Apr-04 14:21

I don't think this is possible, and a solution I found is to create a separate DLL where I put all the unit tests. This way I ensure that I only ship release code to our customers, and that I can freely add "tool references" such as NUnit, mock libraries, etc.
IMO, Reflection would not help you because there's no way to add attributes ([Test], [ExpectedException], etc) to a class after it has been loaded.

Due to technical difficulties my previous signature, "I see dumb people" will be off until further notice. Too many people were thinking I was talking about them...

Re: dynamically add/remove reference for a specific configuration

leppie23-Apr-04 20:55

leppie

23-Apr-04 20:55

Although an assembly get referenced on the commandline, it doesnt mean it will be named in the assembly manifest.

"All" you need to do is:

#if NUNIT
//do attributes whatever here, using, methods, et al
#endif

to all the NUint referecences.

^{top secret AdvancedTextBox}

clicking an anchor (link) with AxWebBrowser?

synthmusic23-Apr-04 12:22

synthmusic

23-Apr-04 12:22

I'm trying to automate some web tasks using an AxWebBrowser in a C# application. The browser is working, and I can modify text box text, etc. The thing I can't figure out is how to "click" an anchor. This works:

IHTMLElement link = (IHTMLElement)doc2.links.item(i,0);
if ( link.innerHTML.Equals("Log Out") )
{
IHTMLAnchorElement a = (IHTMLAnchorElement)link;

object flags = 0;
object targetFrame = "";
object postData = "";;
object headers = "";
this.Cursor = Cursors.WaitCursor;
this.wbMint.Navigate(a.href, ref flags, ref targetFrame, ref postData, ref headers);
}

But what if there is onclick scripting in the Anchor? Tried casting it as (IHTMLLinkElement) as well, but don't see any way to "click".

Any ideas? Confused | :confused:

Re: clicking an anchor (link) with AxWebBrowser?

Heath Stewart23-Apr-04 15:59

Heath Stewart

23-Apr-04 15:59

Call link.click() (IHTMLElement::click method). Remember, every element can be clicked, so logically such a method would be defined on the IHTMLElement or its versioned derivatives.

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