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I get a DevicePath using SetupDiXxx functions:
\\?\usbstor#disk&ven_fujitsu&prod_memorybird&rev_1.14#0739035033a1&0#{53f563
07-b6bf-11d0-94f2-00a0c91efb8b}.
How can I use this device path to retrieve a drive letter in format of "F:\" ???
When I use GetVolumeNameForVolumeMountPoint function, I always receive "error C3861: 'GetVolumeNameForVolumeMountPoint': identifier not found, even with argument-dependent lookup" even though I've already add statement in my code : #define _WIN32_WINNT 0x0502
-- modified at 10:15 Wednesday 19th July, 2006
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Hi All,
I'm a complete newbie to coding and the like, but I have been given an urgent deadline to create something, and I haven't a clue at all what to do.
I have been asked to create a a progamme that will have a desktop Icon, and will launch a window with no bottons or anything like that (similar to an IE popup window) and only have a title bar at the top (with the name of the programme), and simply display a .html or .php page that I have already created for it.
I'd assume that for a seasoned code guru, this probably sounds so simple and a silly request for help, but I really don't have a clue!
Any help will be most appreciated, and many thanks in advance!!
Regards
Kevin
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Sounds a bit odd to me but here a short description:
1. Download and install the Visual Studio C# Express Edition.
2. Start it and create and new windows forms application.
3. You will see an empty form. Click it and change the properties as you like.
4. Look at the tool box at the left. There is a WebBrowser control int it. Drag it onto the form.
5. Change the properties of it as you like (in one of them you can choose which file should be displayed)
Robert
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Hi,
Thanks for the quick response!
I have followed your instructions, and it works well to create the application, although none of the video in the window will load. However, if I launch the HTML file in IE, the video does work.
I assume I'm doing something wrong somewhere?
The video is Windows Media, four seperate feeds embedded on a webpage, using activeX
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Hi there,
I want to use a custom configuration section of the following form
(using the new .NET 2.0 classes, not the old
IConfigurationSectionHandler interface):
<mySection>
<Setting1>Value1</Setting1>
<Setting2>Value2</Setting2>
</mySection>
But all examples I have found only describe this form:
<mySection>
<Setting1 Value="Value1" />
<Setting2 Value="Value2" />
</mySection>
I have this second form working, but I would like to know if the first
form is even possible, and if yes, how to do it. I'm using the
attributed model, so a small example with the attributed approach would
be appreciated.
Thanks!
cu, banzai
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Hi,
I am student of MS.I have got a project of Mobile Agent in course of distributed system. I have not worked on such kind of thing. I want to implement it in .NET. So plz help me . Tell me some articles /guidelines so i can implement it.I will be very thankful
nabeel
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i downloaded an example of property grid custom properties.
this is the example link:
http://www.codeproject.com/cs/miscctrl/Menu_in_PropertyGrid.asp
when i clicked on "sturct" property i get a button on the right side of the property.
i dont want this button to be shown.
how do i do it?
waiting for your answer.....
thanks and have agood day
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There is a board at the bottom of the article. If you place your question there than the author will be automatically notified. He probably knows best how to help you.
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Sometimes (less that 1% of the calls) I am getting “System.Runtime.Remoting.RemotingException: Port is Busy: All pipe instances are busy” on remote method invocation when using IpcChannal.
Has anybody experienced the same problem?
Suggested solutions?
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Maybe trying to disconnect/hand off from the ipc channel will resolve this.
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Hello there,
I'm looking for a method to convert an object to Guid type and vise versa.
Thanks.
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Please don't cross post !
My english is not so good. Please, correct my errors.
Best regards, Alexey.
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If i call Web Service from same server it's working fine. If i try to call the Web Service from another server,i am getting this following error.
Unable to generate a temporary class (result=1).
error CS2001: Source file 'C:\WINDOWS\TEMP\39_bmero.0.cs' could not be found.
error CS2008: No inputs specified.
sathiya
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I'm going to guess that when calling it from the same server, it uses Windows Authentication. The ASP.NET runtime then uses your credentials to write the C# code that it generates to do the XML serialization, which it then calls the C# compiler on to generate an assembly to load.
When you call it from another server, it's probably using anonymous authentication, which means that the serializer code is running as the ASPNET user (Windows 2000, XP, by default) or the NETWORK SERVICE account (Windows Server 2003). The actual account used can be modified in web.config on 2000 and XP and by changing the application pool settings on Server 2003. I suspect that the error is occurring because the Access Control List on the C:\Windows\Temp folder doesn't allow this user to write to it. To change this, right-click the folder in Explorer, go to the Security tab, click Add, select the appropriate user, and check Modify in the Allow column.
Stability. What an interesting concept. -- Chris Maunder
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I have been developing some extensions to bollwerkj's article "How to use Managed C++ to Automate Excel" (http://www.codeproject.com/managedcpp/ExcelwithMC.asp[^]) and one key line is
using namespace Microsoft::Office::Interop::Excel;
A couple of weeks ago, I loaded the new Windows security updates, and now I am getting compile errors that say "Interop is not a member of Microsoft::Office." Anyone have any idea how to undo what I've done and get this back? (I don't know for sure that these two events are connected.)
I went back to through the article and re-installed the PIAs, but that didn't fix anything. The files were all available. Has anyone else run into this kind of problem before?
Any suggestions will be greatly appreciated.
Thanks,
Dave
"You can say that again." -- Dept. of Redundancy Dept.
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I have a plug in that I load into a new appdomain, and before I create the domain, I set the AppDomainSetup.ApplocationBase directory to point to where all the assemblies which constitute my plug in are.
This works just fine, and the new domain obediently goes away and loads the satellite assemblies in. But I also have a text file I want to read in, but when the plug in tries to do this, it searches the primary domains bin\debug folder, not the one specified in the ApplicationBase folder.
Anyone know how I can use the ApplicationBase as the working folder for the domain as well as the assembly search path?
Regards,
Rob Philpott.
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The ApplicationBase property does NOT change the current directory for file operations. It only affects the loading of assemblies for that AppDomain. An application cannot have more than one "current directory", one for each AppDomain is not possible, and using it is considered an unreliable practice anyway. Change your code to get the path to the .EXE (Application.StartupPath), then use the Path class's Combine method to create fully qualified paths to the plugins.
Dave Kreskowiak
Microsoft MVP - Visual Basic
-- modified at 11:20 Tuesday 18th July, 2006
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Nice one Dave,
Thanks for that - a very precise answer on a subject not many (including me) know about. When you say 'an application' cannot have more than one current directory, do you refer to a Windows process?
Regards,
Rob Philpott.
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Yep. An application, or Process, can have multiple AppDomains, but only one "current directory".
Myself, I follow the philosophy of leaving nothing to chance. I always build and use fully qualified path names, even when then files are in the same path as my application.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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You could set the static Environment.CurrentDirectory property to the same directory as the ApplicationBase.
:josh:
My WPF Blog[^]
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Hi all
I'm writing a simple form which is a launcher of a game using C# with .net framework.
What problem I met is, I need to place some transparent buttons in the form which contains a playing AVI video in the background, but the video in the transparent part of those buttons cannot be properly displayed.
I used a panel to hold the AVI video (using Microsoft.DirectX.AudioVideoPlayback) and a PictureBox to hold the transparent image (PNG format). I did set the background of the PictureBox to transparent, but the color of the transparent part of the Image seems as same as the background color of the form.
Can you help me about this? thanks!
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You might be able to work something out by using the backcolor and forecolor options for the controls and set the color to transparent. ex:
control1->backcolor = Color(0x00000000);
p.s. the code sample is in c++, although it should be close enough for you to work with it in c#, and the color call is in system.drawing.dll
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You can use a transparent (TransparencyKey = BackColor) form above your panel.
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Hi all,
I've recently had to work on a .NET web application. Now, although I've been familiar with .NET for approximately a year now, I'm primarily a Java developer. And while I think .NET is a great idea, there is one thing I don't quite understand about it -- the way exceptions are handled. In particular, I'm dissapointed by the lack of checked exceptions. A method does not need to declare that it may throw an exception, making it harder to manage the propagation of exceptions in your programs.
Perhaps a simple example to demonstrate...
Java:
static void myReadLine(String filename) throws IOException {<br />
BufferedReader reader = new BufferedReader(new FileReader(filename));<br />
return reader.readLine();<br />
}
C#:
static void MyReadLine(string filename)<br />
{<br />
StreamReader reader = new StreamReader(filename);<br />
return reader.readLine();<br />
}
It's pretty obvious what both methods are doing, and that they are doing it in pretty much the same way. The main difference is in how those methods can now be used. In C#.NET, you can call MyReadLine() from anywhere in your code and everything will happily compile. If things go wrong and an System.IOException is thrown in that method, then unless you've done your homework and surrounded the call to MyReadLine() with a try-catch block, your application will crash. With a pretty stack trace printed on the screen. Ungracefully.
In Java, the code will not even compile unless you are explicitly catching that exception when calling myReadLine(). An IOException is a checked exception in Java -- meaning that if it's ever thrown, it must be caught somewhere in your code. Other exceptions, such as, say NullPointerException, are run-time exceptions and do not have to be explicitly caught (although sometimes it's not a bad idea to do so). In .NET, it seems, all exceptions are considered run-time.
Even if you happened to know that StreamReader.ReadLine() throws an exception, there's a fair chance that some methods in your code could throw exceptions without you even knowing it. And if they can, then they will -- at the worst possible time, naturally. So your options are either keep your fingers crossed, or trawl through the documentation, checking for possible exceptions for each method your code is calling. Neither option is particularly appealing. Nor is catching the general System.Exception always a good idea. Whenever something has gone sour, the code that makes the sun shine again should know exactly what when wrong and exactly what to do about it. Catching a general exception just tells your program something went wrong -- no more, no less.
Why am I writing this? If you've read this far, you'll probably agree that sure sounds like a whinge. And you'd be right. But there's more to it. I'd like to ask:
Can someone cast light on why are exceptions being handled this way in .NET? What are the advantages of treating all exceptions as run-time exceptions?
Is it something that you just learn to deal with as a .NET developer? How do you deal with it?
Cheers,
Misha
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Yes there is a rationale behind this.
Anders Hejlsberg (Turbo Pascal inventor, Delphi Lead Architect at Borland and now lead C# architect at MS) does explain why Javas checked exceptions are a nice concept but do break in big projects.
http://www.artima.com/intv/handcuffs.html
HTH,
Alois Kraus
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