How do I suppress a MessageBox from showing that comes from a reference to an assembly that I do not own (nor have the code for)?
For example, my application (MyApplication.exe) is referencing an assembly coded by someone else (SomeoneElsesAssembly.dll). Inside of this assembly I'm calling a static method, which does what it's supposes to, but also is firing a MessageBox that I want to suppress.
I thought there was a way to reference an assembly in Non-Interactive mode or something along these lines.
Thank you for your help.
-Jessy Houle
This article may be able to help
What you are asking is basically "How can I modify the behavior of code in a third-party assembly".
Short of disassembling/reassembling, the answer is "You can't".
There are some icky options;
With managed code you always have the source in some form. If the function is somewhat self-contained you could use Reflector to copy it into your own code
You could have a 2nd thread that waits till the message box appears and then automatically closes it.
I thought there was a way to reference an assembly in Non-Interactive mode or something along these lines.
I believe it's possible to run a process in a non-interactive mode (such as Windows Services, for example), but assemblies are loaded into the process and are subject to the same interaction levels as other assemblies in the process, afaik.
So, either disassemble-reassemble or send windows messages directly to the box to automatically close it.
Basically you're asking if you can reference an assembly which calls MessageBox() and have the code not actually show a message box. The answer is unfortunately no.
You're best bet is to use screen scraping to close the message box once it shows up. This post has some example code of how to close an InProc message box. http://www.codeproject.com/KB/dialog/AutoCloseMessageBox.aspx
Related
When I build my website project using visual studio 2016 (or any visual studio for that matter), the compiler gives me an error:
However if I go to the code file ResetPassword.aspx the edtEmployeeSurname control is present and it has a runat="server" attribute.
There is also no errors given to me if I open the ResetPassword.aspx.vb code file. (So no red lines under any variable names / Control ID's).
What is really interesting is that the website (Even ResetPassword.aspx) loads correctly from the browser without any issues and I can submit the form.
If I comment out all the code in ResetPassword.aspx.vb then it just finds another control that "Doesn't Exist" and so it carries on with a lot of pages.
All I want to know is:
What causes these issues
How to fix these issues OR how to determine what the issue is.
If this is a common mistake that some developers make then please help me to formulate a search string to use in google, because most of my search results were obscure or off topic.
I've run into this sort of thing before and I believe the errors you are seeing are red herrings. They lead me to believe that one of your lower projects where your user controls are defined, or possibly even lower than that, has a possibly unrelated error in it which is causing it to not be built by visual studio, which in turn makes visual studio think your user controls aren't defined.
What I normally do is build the solution and watch the output window. It will build all of your projects individually, the first error you see pop up in the output window is the source of your problem. Everything else you are seeing is a symptom of that original issue. If you fix the first error that shows up in your output then it will either build correctly or you will have to repeat the process with the next error that pops up.
Visual Studio used to order the errors in the error list in the order that they came up during the build but that has changed, I, personally, really preferred the old sorting(I think there is a setting that you can use to get back to the old sorting but I can't think of it off the top of my head).
From screenshots, it shows you have 50 errors in your project. There is no way an application will run successfully if you have not set to do so.
You could make application run, even if errors.
Check SO post :
Debugging runs even with compiler's errors in Visual Studio
Note:
If you have already cleaned and rebuilt solution,
Try running application in other browser or another computer, may be you have data shown from previous successful result.
Based on the wording of the error, I believe it's possible you are referring to some of these controls outside the code behind of ResetPassword.aspx. The latter part of the message says It may be inaccessible due to its protection level. By default, the backing variable for a control you place on a form is Protected and therefore cannot be seen outside the scope of that control or its inheritance chain.
Folks,
I have an application that is primarily one page with a lot of user controls and custom controls. ASP.Net WebParts are being used. There is almost no code in the web page and its master page: it's all in various components.
The design requirements include an error message display panel. The client would like the app to display any errors occurring in any part of the app on the error message display rather than going to a custom error page. (This was a recent decision: when we started we were thinking custom error page.)
As far as I can tell, WebParts don't provide any default error handling (no capture of errors and displaying of messages) and user controls don't necessarily fire their OnError event when an internal error occurs.
So I'm looking at wrapping absolutely everything in Try ... Catch blocks, at least at the presentation level, and doing the handling. So my question is: is there any easy way to implement a kind of global, or at least class-wide, error handler, that will handle an error in the way I choose, interrupt the routine that was executing, but return (after handling) to the caller of the method that failed?
I'm willing to adapt code to verify that subroutines did what they were supposed to and returned appropriate values (ex: non-null data objects.) What I don't want is for the whole process to be aborted up to the very top, with rendering skipped, or (of course) the famous yellow and white screen.
I guess this is a case for aspect-oriented programming, but I don't think ASP.Net provides anything like that yet. I didn't get the impression that EntLib 5.0 did, either.
I would adore it if it were possible to decorate a method with an attribute that meant "On error call such-and-such a static method of such-and-such a class". But I doubt it is, yet.
Any suggestions are welcome.
Thanks,
Ann L.
For starters, it's bad practice to put Try Catch handlers around every piece of code in your application. There is a slight performance hit every time you set that up, and this could slow things down really fast.
In your Global.asax.cs (or .vb) file, there is a method in there called Application_Error which is the global error handler. This will catch any error you haven't previously caught (or thrown up) within the application.
You could easily put your error handling code here. It could be as simple as dumping the error message to a log for future review, or check for the exception type (SQL vs. File vs. HTTP) and do the error handling task related to the type.
You need to take a look at elmah. If you google 'elmah' it has an error module/handler that does pretty much what you are looking for (although it will take some extra tweaking..)
You might want to consider letting your errors 'bubble up' though.. There are some serious performance issues with writing a bunch of Try..Catch..Finally blocks...
Hint: this one might sound complicated, because I am trying to give as much info as possible, but I suspect that I just want someone to tell me "yes, you are correct".
On this legacy system, which dates from 2002, the user visits a web page and uses an RFID reader to read a tag number, which is then written to an input field on the web page.
The only s/w that comes with the reader is a custom DLL, nop .exe.
The very sparse documentation insists that only MSIE be used and that all security relating to ActiveX be disabled.
When I look into the source of the web page I see calls to functions in the DLL.
Now, here's the fun part: I know zilch about ActiveX, I have to make a minor change to the DLL *but* the VB6 source code has been lost, so I guess that I have to recreate the (seemingly very simple) DLL from scratch - this week.
Decompiling the DLL shows me the functions (locateReader, getTagVal, closeReader). However, by decompiling I can't really know the number or type of the parameters, nor the return values ... and if anyone knows the API they are refusing to share it, but basically it all seems to have been lost in the mists of time as companies went bust, were bought & sold, merged & demerged and the initial DLL might have been written by an external guy, but no one knows who.
So, can I get the function params & type from the ASP page source?
I see things like
Reader = new ActiveXObject("<dllName>.Reader");
Reader.locateReader();
tagVal = Reader.getTagVal();
Reader.closeReader();
So, I would say that none of the fn()s take parameters, that closeReader doesn't have to return anything; it looks like locateReader doesn't return anything either, so I guess that error handling will have to be in the DLL (loop forever with a popup demanding that a reader be attached; and getTagVal seems to return a string.
Does that sound about right? Any other comments (other than lessons to be learned)?
The 'code' you've put here looks like the a direct call to the device. And getTagVal() seems to get the RFID value? Since this is an COM (Active X) call can you call this in a simple .net program and see if you can access the reader? If you can then you may be able to just wrap the existing functionaliy in your wrapper.
You need to try and generate a TLB from the component:
So, if you only have a COM dll, you
need to get an idl-file from it:
Visual Studio, start it and go to the meny Tools->OLE/COM Object Viewer.
This is called oleview.exe and can also be got from the windows sdk
In that application, select meny File->View Typelib..
Select the COM dll and you will see the Typelib.
Select the meny File->Save as. Save it with an appropriate name. For
example "mycom.idl"
start midl.exe or mktyplib.exe with the idl-filname as the argument. "midl
mycom.idl"
Read MSDN for more info about midl and
mktyplib
An existing (though incomplete) FLEX3 project was given to us to finish (always a nightmare).
It is quite small but highly abstracted (contains well over 150 files to support only about 10 page views). I'm attempting to trace a single mouseclick event through this maze.
Is there a way to print out an actionscript trace and/or component flow using the debugger (or any other tool that anyone knows of)?
The flash.txt file appears worthless since it doesn't contain ActionScript calls and/or component flows.
Thanks
This will print your execution graph:
Trace.setLevel(Trace.METHODS, Trace.LISTENER);
Trace.setListener(handleMethods);
function handleMethods(fqcn:String, lineNumber:uint, methodName:String, methodArguments:String):void
{
trace(methodName);
}
Oof. Yeah, always.
The Profiler might give you useful information, but you need to pay for FlexBuilder Pro to get it, if you don't already have it. I'm not real handy with the Profiler, so I may be off base with that advice. It would be worth checking into, though, if you are already familiar with other profiling tools.
I would probably just start looking at every point that .addEventListener(MouseEvent.CLICK occurs in the code - and .addEventListener("click", just in case the previous developer chose not to use the constant, for some reason.
Obviously, that could show up a lot in 150 files, but that's how I would go about it.
I would also look at any custom events that could get into the mix. Because maybe the CLICK event is handled at some point and the handler dispatches a custom event. And maybe the handler for that custom event dispatches another custom event. Or dispatches a MouseEvent.CLICK event, etc.
Hope that helps. Good luck...
Check out
http://jpauclair.net/2010/02/10/mmcfg-treasure/
esp.
AS3Trace = 1|0
This one is also very useful for
debugging It trace every single call
to any function that is being called
in the SWF at runtime! It’s like
expending the StackTrace to the full
software run time.
And many more.
I have seen several projects that use the Trace functionality to capture events and stream them out to a log file. I have been unsuccessful in finding a simple to follow guide that will show me how to configure Trace to capture and write said logfile. Does anyone have a link recommendations, or provide some simple steps to follow?
The Trace object writes the statements to any attached TraceListeners. You can build your own, but there are a number already defined in the System.Diagnostics namespace, including:
ConsoleTraceListener (Console)
DefaultTraceListener (Visual Studio / Debugger)
DelimitedListTraceListener (TextWriter, special formatting)
EventLogTraceListener (EventLog - anything that inherits from System.Diagnostics.EventLog)
TextWriterTraceListener (TextWriter - think file)
You can, of course, inherit your own from the TraceListener class that writes to where ever you want. For example, you could log to a database, have it send e-mails or pages in certain situations, or write the statements back to a logging platform like log4net.
The big thing is that you need to create an instance of whatever listeners you want and then add them to the Trace' class Listeners collection. You can add as many as you need and Trace will write to all of them. This way, you can write your logging code once using a well-supported and understood object that's part of the framework, and you can attach anything you need to it.
I stumbled into a MSDN article that really helps. Sorry I didn't find it before posting the question but perhaps others may have the same question and haven't found this link.
Take a look at logging frameworks. We rolled out own, but are now migrating over to log4net available free at http://logging.apache.org/log4net/
Im looking for a way to set the Category of the EventLog, the FormattedEventLogTraceListener writes into (not the category of the message).
But I can't find an appropriate property of this class.
Is it possible to set this?