Re: Raise Event - C# Discussion Boards

8-Mar-04 10:34

Create a file called yourapp.exe.config and put it in the same directory as your application. In there, you should have something like this:

<configuration>
  <appSettings>
    <add key="connString" value="my connection string"/>
  </appSettings>
</configuration>

In your code, you can use Configuration.AppSettings["connString"] to get the connection string. This is a very common practice and there are many examples both here on CodeProject, in the .NET Framework SDK (like Mazdak said, look up information about configuration files), and all over the web.

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Raise Event

laptop_018-Mar-04 9:51

laptop_01

8-Mar-04 9:51

Hi

Is there a way to make a "single" click event behaves like a "double click" by using some sort of redirecting?

I am using C#

Thanks

Yasir Memon8-Mar-04 10:19

Yasir Memon

8-Mar-04 10:19

Can you be more precise with your question?

Do you mean you want to perform a double click just with a single click on a particular control?

You can always change the function name in the delegate for single click event declaration in the "Form Design code" to reflect the double click function.

Hope this is what you were looking for...

Yasir S. Memon,
ysm@aqualyzer.com
Chief System Architect,
Aqualyzer

laptop_018-Mar-04 10:27

laptop_01

8-Mar-04 10:27

Yesir;

Thanks for the reply.

I don't quite understand what you are ssying. Here is what I got:

this.gridPredictorCases.ClickEvent += new System.EventHandler(this.gridPredictorCases_ClickEvent);
this.gridPredictorCases.DblClick += new System.EventHandler(this.gridPredictorCases_DblClick);

I have a third party grid control inside my form. The cell in question has a dropdown combo that appears only if I double click on the cell. I like to be able to click once and have the dropdown open up.

Thanks

Heath Stewart8-Mar-04 10:37

8-Mar-04 10:37

Your event handlers don't control this behavior. Events are only raised as a result of clicking or double-clicking. If you need to change this behavior, you most likely need to extend the class and override key methods. The only way to find more information about that is to ask on any site forums related to this third-party control or to contact their technical support. This forum is for pretty much generic C# questions - not typically questions related to a particular product (especially third-party products that no one else would most likely be knowledgable about).

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laptop_018-Mar-04 11:07

laptop_01

8-Mar-04 11:07

Heath;

I posted the question in generic terms. I figured that a double click is a double click no matter how it is cooked and what banner it comes under.

But I see your point. I got it figured out based on your hint.

Thanks

Context Menu - Display Member, Value member

LongRange.Shooter9-Mar-04 7:38

LongRange.Shooter

9-Mar-04 7:38

You can easily solve this -- if the third party control exposes the Click event AND you are already handling the DoubleClick event.....

control_DoubleClick += new EventHandler(myProcessEvent);
control_Click       += new EventHandler(myProcessEvent);

In this case you are handling both double and single click events equally.

If the control automatically handles the DoubleClick (instead of you) then you need the Click event as well as a method to execute the DropDownBox process as well. Then you would be doing this:

control_Click += new EventHandler(myProcessEvent);
              ...
private void myProcessEvent(object sender, EventArgs args)
{
     control.DropDownBox();
}

If the vendor does not outwardly offer these options, then you need to ask them directly. You may have to wait for a new release to get the features or you may have to inherit the control and try hooking into its' base control object events.

_____________________________________________
_{Of all the senses I could possibly lose,
It is most often the one called 'common' that gets lost.}

Ruchi Gupta8-Mar-04 9:08

Ruchi Gupta

8-Mar-04 9:08

Hi All,

I have a ContextMenu. At the leaf node user want to see both the Code and description as follows.

1 - Employee
2 - Customer
3 - Administrator

Is there any property similar to ValueMember (as we have in ComboBox) in MenuItem. I want to be able to get value of code i.e. 1 or 2 or 3 when a leaf node is selected.

Thanks
Ruchi

Heath Stewart8-Mar-04 10:31

8-Mar-04 10:31

You mean like MenuItem.Index?

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Ruchi Gupta8-Mar-04 10:36

Ruchi Gupta

8-Mar-04 10:36

No, not index.

code and Description can be

167 - Employee
256 - Administrator
234 - Customer

So what I am displaying on the leaf node in above information. But when any of above node is selected, I want to get 167 or 256 or 234 as the value. LIke in combobox, we set Display member and valuemember.

Rigth now I am tokenizing the leaf node upon selection as -

dealNo = dealNo.Substring(0, dealNo.IndexOf("-", 0));

to get the reqired piece of information.

Heath Stewart8-Mar-04 10:39

8-Mar-04 10:39

The MenuItem isn't a data-binding control like the ComboBox. What you see is what you get - there is nothing "behind the scenes" that track information like this. That doesn't mean you can't add it, though. Extend the MenuItem class with your own and add a property to hold this information. In the MenuItem.Click handler elsewhere in your code, you cast the sender (the first parameter) to your MenuItem derivative class and get the value of that property.

Microsoft MVP, Visual C#
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IE Snapshot ...Is this possible with C#

Ruchi Gupta8-Mar-04 10:43

Ruchi Gupta

8-Mar-04 10:43

Thanks for prompt response. You are a genius.

Ruchi Smile | :)

AWebDude8-Mar-04 8:05

AWebDude

8-Mar-04 8:05

Just wondering if its possible to create a web page snapshot with C#. Check this example:
http://www.pcworlddownload.com/internet/browser-utilities/IESnap.htm

This tool adds a button to IE toolbar and when clicked it saves the web page as png file.

I'm working on a similar project but can't solve this part.

Any help is appreciated.

Thanks.

Heath Stewart8-Mar-04 10:17

8-Mar-04 10:17

One way is to use IExtractImage, a shell interface in Windows XP and higher. There is an article that describes it at http://www.vbaccelerator.com/home/NET/Code/Libraries/Shell_Projects/Thumbnail_Extraction/article.asp[^] using VB.NET, but most everything is calls on the FCL and your own interfaces anyway, so it shouldn't be hard to translate. I wrote some code that works in a similar fashion a while back, but my computer isn't currently generating previews for HTML (hasn't for a while) so I can't gaurantee it works correctly).

Another way would be to supply an HDC for an image that IE would use to print to instead of a printer HDC. Off the top of my head, though, I'm not sure how you'd do this.

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Russell Morris8-Mar-04 10:18

Russell Morris

8-Mar-04 10:18

The following article (by me Smile | :)

) may be helpful to you.

http://www.codeproject.com/miscctrl/viewobjsnap.asp?target=viewobjsnap#xx731389xx[^]

You'd have to do COM interop from C# to use this method.

I'm not aware of a more IE-specific solution to this problem. In addition, in the intervening 4 years since the article was written, the IE COM interface may actually have started exposing the functionality you want. I'm not sure, though...

Russ

--
Russell Morris

"So, broccoli, mother says you're good for me... but I'm afraid I'm no good for you!" - Stewy

Heath Stewart8-Mar-04 10:44

8-Mar-04 10:44

He asked this question some time back, too. Several of us suggested taking a screen shot (easy enough with code) but he didn't want that. Isn't that pretty much what you're doing in yours (since Draw wouldn't/shouldn't paint hidden regions)? You probably weren't aware that he asked before and that screen shots wasn't what he wanted, but I'm just trying to clarify what I gathered from your article.

Microsoft MVP, Visual C#
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Russell Morris8-Mar-04 10:56

Russell Morris

8-Mar-04 10:56

IIRC you can tell Draw how much to draw (ie in what bounds). However, it's still just a screenshot with a few bells-n-whistles, as you point out. Since HTML is inherantly non-paginated, I'm not sure how much better you could do than that. I wonder if the 'Preview' functionality of explorer could be harnessed somehow for this?

--
Russell Morris

"So, broccoli, mother says you're good for me... but I'm afraid I'm no good for you!" - Stewy

Heath Stewart8-Mar-04 11:00

how do you use string from WWW-Authenticate header?

8-Mar-04 11:00

To print a document to an image is what I was getting at in my reply above. Windows Explorer also uses an IExtractImage implementation that it gets from the shell object (like an HTML document) that it displays in the preview screen at the left in XP. So, yes, it does have this functionality. Getting it to work in .NET is tricky since you have to re-declare a bunch of interfaces and their dependent structs and enums.

There's also a way to create a "printer" that provides an HDC attached to the right information and have it print to an image (Office 2003 comes with one). This tool he mentions may do something similar (I'm not about to download it). There's other ways that you can have IE paint to an HDC you provide, but I can only find this for IHTMLPainter implementations that are implemented by binary behaviors (so they are in-place elements).

Microsoft MVP, Visual C#
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godzooky8-Mar-04 7:42

godzooky

8-Mar-04 7:42

i'm trying to connect using HttpWebRequest class, but i'm getting a 401. i read in the documentation that i need to check the WWW-Authenticate header to see how to perform authentication. the info in the header is "Negotiate,NTLM". do i pass this string into the second param of CrendentialCache.Add()?

Re: how do you use string from WWW-Authenticate header?

Heath Stewart8-Mar-04 8:44