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I'm having a problem which I'm not sure how to overcome. I've placed a listbox component inside a panel, that has autoscroll bars. When this listbox is partly outside the view of the panel, and it is clicked (i.e gets focus), the scrolling is adjusted so that the listbox is forced to be in view fully..
----------- CLICK => ------------
| panel | | |
| --| | -----|
| | |<-listbox | | ||
| --| | -----|
|<===== >| |< ======>|
----------- ------------
There are a couple of methods in the containercontrol that I believe have to do with this, one named ScrollActiveControlIntoView(). But of course it is private so I can't override it, can I?
Is there a suitable Windows message that I can capture and ignore in the wndproc for example, for this not to happen? What is the thread of action taken by windows when this happens, what messages are sent, etc. Does anyone know?
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----------- CLICK => ------------
| panel | | |
| --| | -----|
| | |<-listbox | | ||
| --| | -----|
|<===== >| |< ======>|
----------- ------------
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Nice ASCII!
Set AutoScroll to false. See the documentation for ScrollableControl.AutoScroll for more information.
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thanks!
about the autoscroll, if it is set to false, There will
be no scrollbars at all. (And I really want those, since
my view area is about 500 x 500 but the 'sheet' is about
2000 x 2000 ...)
What I don't want is the scroll to change just cause the
listbox gets input focus. I want it to get the focus when I
click it, cause I want to be able to control it with the the
keyboard, but I don't want the scroll to move
(basically because when I click the listbox I want to be able to drag it and move it. I then paint a border of it when it's being dragged. this border will mis-aligned cause I draw it from the coordinates of the listbox when mouse is clicked, but then the scroll changes and so does the coordinates of the view area, cause of the autoscroll...)
bummer, huh? =)
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Does any of u guys know the link to good Regular
Expression Tutorial in .NET specailly CSharp.
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I'm not familiar with any tutorials, but this article contains a handy application that can be used to test out various regular expressions. It's useful for generating the regular expression syntax to use in a program.
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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Dear friends,
I've tried to make a simple application, and built it as an exe. But I got a problem , how can I prevent the application not to be re-opened if it has already been opened?
Could anyone point me the way??, need programming or just simple setting?
Thanks a lot
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The best method is probably creating a "named" Mutex (in the System.Threading namespace). When your application first comes up, you try to claim the named Mutex, which is system-wide. If you can't claim it, another instance of the application is already running. The only thing you really have to do is make the name of the Mutex very unique. A good way to create something with a very unique name is to use a GUID.
So you do something like set a string up to be the Mutex name you want, like:
string mutexName = "...";
where you use a GUID in place of the ...
Then do something like:
bool weGotIt = false;
Mutex mutex = new Mutex(true, mutexName, out weGotIt);
if (weGotIt)
{
// Run like normal...
}
else
{
// Exit...another instance of the application already has it...
}
Let me know if I didn't explain this well or if you need more help.
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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Another way is to P/Invoke the FindWindow API in your Load event and if there is one instant of your application exist, exit the program.
Mazy
No sig. available now.
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Using a Mutex is by far the best way, because they are atomic (an ATOM registered in the system). Using FindWindow relies on a window class name and / or a caption, which could already exist whether it's the correct application or not, or the caption for your application might be dynamic so a running instance won't be found by FindWindow. It works for many cases, but not all.
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Version: 3.21
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Thank you for all of your replies.
But could you give me a full example simply show me that how to use "Mutex". Is it the traditional way to do?
Thank you
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Kentamanos already did above. You acquire a Mutex with the first instance and the second instance (or more) can't acquire it so you exit the application:
string mutexName = "some unique string";
bool acquired;
new Mutex(true, mutexName, out acquired);
if (acquired)
{
Application.Run(new MainForm());
}
else
{
Application.Exit();
}Optionally, if you don't acquire the Mutex, you can grab the command line parameters (like a filename) and force the existing process to open a new document (or set focus to the existing document). There are plenty of examples of this here on CodeProject and on the 'net.
Microsoft MVP, Visual C#
My Articles
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What do you mean?
Kentamanos has posted it.
Thank You
Bo Hunter
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i am a beginner really and i thaught i had the right program and i want to know if the c# builder tool was free and if it it is free if some1 could email it to me
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Go here. This is the free .NET Framework SDK, which includes a command line C# compiler. Take a look at the C# samples.
A good place to start with C# is the Quick Start Tutorials.
If you want a free C# IDE (Integrated Development Environment), I've heard good things about Sharp Develop.
You should definitely read a lot of stuff on MSDN.
You should probably pick up a book on C#. If you're new to programming, learn to walk before you run. I'd start with "console applications", and not worry about form based applications or Web applications yet. Don't expect to write a "killer app" from the starting blocks.  Start simple...
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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Thanks. 
Mazy
No sig. available now.
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i cannot get OpenPGP can because it is a missing file some1 email it 2 me
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...and this has to do with C# because?
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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OpenPGP is NOT a C# program! It's a C/C++ program. Understand the difference. If you're having problems with OpenPGP, then see http://www.openpgp.org[^]! This is NOT a C# question and does not belong here. Try the C/C++ forum but search the product web site first that I gave you - finding answers to product-specific questions should obviously lead you to the product's web site.
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Version: 3.21
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I'm trying to develop an XML Webservice for work that uses SOAP. It's very easy to get something going quickly, but It's a bit tougher to get it exactly like you want  .
My current concern is the WSDL that's automatically generated with the "?WSDL" query string is very unstrict (can't blame it, it's not psychic). For instance, every parameter to a method that can be null ends up having its "minOccurs" set to 0. I'd also really like to be able to use some regular expression restrictions for certain types. I'm a big believer in schema validation (which I realize I have to do by hand regardless of what the WSDL says), and I'd like the WSDL to be more strict.
I've searched for quite a while, and I'm not having much luck finding anything. There seems to be a lot of attributes I can use to control the XML serialization of classes, but I haven't seen anything yet that lets me do something like "represent this class with this XmlSchema instance", which might be how I would get my service to create a "good" schema (guessing here).
Should I just give up on making the automatically generated WSDL look good and just write my own WSDL file by hand (and point clients there). It seems like that route would be more of a pain in the butt to maintain, but if that's the only way to make me happy I might go that route. Is there any way I can turn off the automatic WSDL generation (?WSDL querystring on the .asmx) if I go that route?
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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Hmmm...looks like I might be able to implement IXmlSerializable and have it return the exact schema. I'm going to check that out...
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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Well just in case someone's following my rambling...
I hate when I figure something out minutes after I posted .
I spent the most of the day going down the wrong path with all the attributes available for classes that control how XML serialization works. It would appear that at the end of the day, you're better off just going ahead and implementing IXmlSerializable yourself and saving yourself a lot of headaches.
I now need to make sure the proxy generators handle this type of WSDL properly (I doubt classes will enforce restrictions, but at least I'm putting it out there as a "contract" for clients). If the proxy generators (one in IDE and WSDL.exe if nothing else) handle this properly, then I should be set.
I, for one, do not think the problem was that the band was down. I think that the problem may have been that there was a Stonehenge monument on the stage that was in danger of being crushed by a dwarf.
-David St. Hubbins
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