Re: Adding EventHandler - C# Discussion Boards

DavidNohejl19-Jul-07 11:33

19-Jul-07 11:33

Please modify your post and check that "Ignore HTML tags in this message"

jon_80 wrote:
Also, IE prompts me that it has blocked ActiveX controls when it loads this file. Why?

I believe it enables the thingy that allows you to expand/collapse xml nodes when viewed in IE.

[My Blog]
"Visual studio desperately needs some performance improvements. It is sometimes almost as slow as eclipse." - Rüdiger Klaehn
"Real men use mspaint for writing code and notepad for designing graphics." - Anna-Jayne Metcalfe

Re: .xml documentation

Guffa19-Jul-07 11:33

Guffa

19-Jul-07 11:33

Use the "Ignore HTML" option when you are posting markup code.

---
single minded; short sighted; long gone;

Re: .xml documentation

Luc Pattyn19-Jul-07 11:34

Luc Pattyn

19-Jul-07 11:34

Hi,

the structured comments that optionally get collected into an XML documentation file
need some special keywords, such as summary, returns, remarks.

Furthermore at least one of the Visual Studio versions has a bug, resulting in the
omission of all comments on properties.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Re: .xml documentation

Rudolf Jan20-Jul-07 7:18

Rudolf Jan

20-Jul-07 7:18

There are several articles on this subject on code project. One example:
http://www.codeproject.com/csharp/C__Documentation_Proess.asp[^] or
http://www.codeproject.com/csharp/csharpcodedocumentation.asp[^]

I recoomend you read these articles.

Rudolf Heijink

Resource

mehrdadc4819-Jul-07 11:05

mehrdadc48

19-Jul-07 11:05

Hi.
I saved a wav file in a resource file in VS in binary.
Now how can I play it with media player object (ax)?
media player only give url to play.

Best wishes

Re: Resource

Christian Graus19-Jul-07 15:35

Christian Graus

19-Jul-07 15:35

I don't think you can, without making a local copy.

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Adding EventHandler

mmfranke19-Jul-07 10:24

mmfranke

19-Jul-07 10:24

Hi.

When adding eventhandlers to events, what's the difference between:

foo.SomeEvent += Bar.OnSomeEvent;

...and...

foo.SomeEvent += new EventHandler ( Bar.OnSomeEvent );

?

Thanks.

Re: Adding EventHandler

MidwestLimey19-Jul-07 11:08

MidwestLimey

19-Jul-07 11:08

In the first case the compiler type checks that Bar.OnSomeEvent has the same delegate type as SomeEvent and inserts the Delegate.Combine call with the inferred delegate type.
In the second, you're doing part of the compilers work yourself by explicitly telling it the delegate type.
The msil code for both will be identical.

I'm largely language agnostic  
     After a while they all bug me  

Re: Adding EventHandler

mmfranke19-Jul-07 11:15

mmfranke

19-Jul-07 11:15

OK, thanks. So why are most of the samples I see written the second way? The first way is leaner. Is this some sort of leftover from older coding practices or something? Maybe .NET 1.x?

Thanks again.

Mike

Re: Adding EventHandler

MidwestLimey19-Jul-07 11:16

MidwestLimey

19-Jul-07 11:16

It's a left over from 1.0 or 1.1, can't remember when they changed it.

I'm largely language agnostic  
     After a while they all bug me  

Re: Adding EventHandler

Luc Pattyn19-Jul-07 11:38

Luc Pattyn

19-Jul-07 11:38

It is only C# 2.0 (hence .NET versions >= 2.0) that support the shorthand notation.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

How do applications get permission to create keys hkey_classes_root?

Sepharo19-Jul-07 9:58

Sepharo

19-Jul-07 9:58

How do applications get permission to create keys hkey_classes_root?

Using Registry.ClassesRoot.CreateSubKey(...) I am able to add registry keys, however I wasn't able to until I messed around with the permissions in the registry. But I've installed other applications from the very same account before without changing permissions and those applications were able to add their owns keys to classes_root.

So the question is how do they do that? What code do I need to add to be able to let my program write to classes_root without the user who installs the program having full access?

Creating Tools > Options window

student_rhr19-Jul-07 9:47

student_rhr

19-Jul-07 9:47

I am strugling with creating an Options Window (like how you go to Tools > Options and a window pops up with options in it).

Does any one know of a way to create this type of windows? Any Ideas, link to an article / white paper etc will be highly appreciated.

Thanks.

Re: Creating Tools > Options window

Paul Conrad19-Jul-07 10:41

Paul Conrad

19-Jul-07 10:41

Just create a new form with the options, and from your main form button/menu item click/whatever, call it up. Nothing much really to it.

"Any sort of work in VB6 is bound to provide several WTF moments." - Christian Graus

Re: Creating Tools > Options window

BoneSoft19-Jul-07 10:45

BoneSoft

19-Jul-07 10:45

The window's not hard, you do that like any other window. What you need to decide is what all you will show, how you will store choices, and how the rest of you app reads and responds to those choices. I assume that's what you're talking about.

I don't know of an article specificly dealing with that, though many may have something like that built into articles about other topics.

Personally, I'd use XML serialization: decide what options to offer, build an XML structure to house them, make your options form address those options, read your config, and write to it. Then I'd probably have the host form show it as a dialog [optwin.ShowDialog()], and make it expose your XML serializable config object as a property so that the host can get the options directly from the options form. And make your host form look for the config on load to initially respond to saved options. But there are a number of things to consider and work out with this. Clear as mud?

Try code model generation tools at BoneSoft.com.

Re: Creating Tools > Options window

student_rhr20-Jul-07 3:16

student_rhr

20-Jul-07 3:16

The window's not hard, you do that like any other window. What you need to decide is what
all you will show, how you will store choices, and how the rest of you app reads and responds to
those choices. I assume that's what you're talking about.

Yes I am.

Clear as mud?

pretty much!!

I have the settings for my applications stored in the MyApp.settings file. Would that be a bad idea?

Also, when the settings are changed i.e. user has changed some stuff in the options window, the parent form doesn't autmatically apply the changes. For it to apply changes does it have to be "refreshed" or "reloaded"?

Re: Creating Tools > Options window

BoneSoft20-Jul-07 3:42

BoneSoft

20-Jul-07 3:42

There's nothing wrong with using app.settings.

For the app to take advantage of setting changes, you can have the host form get the settings from the options form before it is disposed, or read them from your app.settings file after the options form is closed.

private void ChangeSettings() {
    MyOptionsForm mof = new MyOptionsForm();
    // show your settings form as a dialog
    // this line will show the form, and get the result when it closes
    // but you still have the mof reference to it, and can access it's
    // public properties.
    if (mof.ShowDialog() == DialogResult.OK) {
        // Make Setting Changes Here
        // Expose setting properties from MyOptionsForm
        // or re-read your settings file here.
    }
}

That help?

Try code model generation tools at BoneSoft.com.

How Search Engine Works

monafr8119-Jul-07 9:14

monafr81

19-Jul-07 9:14

I Need to books and resources about how search engines Work and also resources about text recognition , speech recognition and artificial Intelligent if it possible Smile | :)

Thanks
Mona

LA ELAH ELA ALLAH MOHAMED RASOL ALLAH