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There are several questions that need to answering:
1. What
Despite the actual text you might want to log off course, the datetimestamp (go millisecond or smaller!), but also who was the user at the time, what machine, which application, module, class, method and finally you'll need a log type (error, warning, information,...) and severity.
2. When
Concerning the actual log message I usually log every exception and the SQL statements. Then mostly I add logging at key points eg when receiving information from a webservice call or when we send an email succesfully, ...
3. Where
Mostly one logs to a txt file or something like that. I find that horrible personally. If you have one application, no problem, but if you have a system, log to the database. It will be easier to trace the sequence instead of going through five log files at the same time comparing datetime stamps. It is always possible to catch a db down and write to txt file as backup.
4. How
Prevent in using a method inside each class, create an assembly that can be used by all applications. Built in a debug level setting that will prevent logging too verbose when not required.
Hope this helps.
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sample application developing in c#
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You can find samples in various books, and even on Microsofts' website. There's samples on this website too.
Start here[^].
Bastard Programmer from Hell 
if you can't read my code, try converting it here[^]
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This isn't even a question. You want a sample application (bad enough - why should we do your work for you) but don't describe what it is that you want (which could range from a "hello world" application to modelling the universe).
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If you are still a sophomore, you can be pardoned and I would suggest a read of Some guidelines for posting questions in the forums[^]
But if you are working in some organization, I would seriously need to know the management of the organization and shoot down the CEO mercilessly because you are just one sample of the whole bunch of rotten apples waiting to spoil the face of entire developer fraternity.
Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips
The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep!
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countered downvote 
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Hi,
I have to create a single setup package which on detection of User's machine decides which msi to consider(compiled for x86 bit machine or x64 bit machine).
My Project using:
1. Visual Studio 2010
2. Coded in C#
3. Built on framework 4.0
4. Using Windows Installer 4.0
5. Prerequisits included (Framework 4.0 (integrated x86 & x64) and SQL Express2008 (integrated x86 & x64))
Problem is currently i have to build 2 setups for different target palteforms (x86 & x64) which bundeling same prerequist files.
If a single setup can be done which decides which sub-msi to use will save more that 100 mb of files to be included in the package.
Thus i want to create one setup.exe, one set of prerequisites and two msis' in separate folders (e.g. x86 & x64) which contains their respective msi file.
So that executing setup.exe will search for firstly prerequisites & then on the basis of system will run the appropriate msi to install.
Regards,
honeyashu
modified 25-Oct-12 5:26am.
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I don't think that is possible, every app I have downloaded that has a different requirement for 86/64 has supplied separate MSIs.
I would be mightily annoyed if I had to download x86 files when installing on a 64 machine!
Never underestimate the power of human stupidity
RAH
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Thanks for your reply, but what i want is i want to create one setup.exe, one set of prerequisites and two msis' in separate folders (e.g. x86 & x64) which contains their respective msi file.
Thus running on setup.exe will search for firstly prerequisites & then on the basis of system will run the appropriate msi to install.
Regards,
Ashish
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OK, so what's the problem then??
Other than, yes it's possible. Setup.exe wrapped installers like this are made all the time.
BTW: Your pre-req's, depending on what they are and how your application uses them, would possibly ALSO have to be seperated into x86 and x64 versions. You cannot mix 32 and 64-bit code in the same process, so if your app is running 64-bit, it cannot use a 32-bit library.
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Problem is i am unable to find a way to create such type of setup.exe
which should call appropriate msi to run on correct system.
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You can create the Setup.exe in any language you want. C and C++ won't require you to install a prereq just to run the Setup.exe. You could use C# or VB.NET, but the user would have to install the .NET Framework on the machine first (if needed) before the user launches your Setup.exe.
In any case, all your Setup.exe is doing is determining which bitness of Windows it's running on then starting a new Process with the appropriate command line to launch your installer, such as "msiexec /i myinstall.msi" and waiting for it to end.
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I don't think it can be done with an MSI installer. You need to have two projects which build two versions of the .msi and which you both provide for download to the user.
You could write a tiny application that checks the platform, downloads the appropriate MSI and uses Process.Start to run it. Most applications don't bother with this, they expect users to know which platform they're on.
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Hello Community,
I am fairly new to OOP so forgive me in my faltering.
I'm putting together a rather small application, in WPF .NET4CP. This application will fetch information from a SQL server and should display the results.
In this example the SQL DB's table will contain lets say 5 columns (first name, last name, description, job, access). These are all varchar.
When the query is run from a button onclick, each resulting row's field will need to be mapped to a control (like a label or something simple). Here's what I do not understand - how does one dynamically create instances of controls AND handle where they will be shown/placed/located in the application (these controls may not all be grouped together in the same place - a tabular listing of results wouldn't do me much good).
I seriously wouldn't want to define an int for say a Y axis value, and for each result, create a new instance of a control, set Y axis to int and then increment int +=10; and go to next result right?
I'm missing fundamentals here and I'm frustrated that I'm not sure what the proper terminology is or how to search for answers.
modified 25-Oct-12 12:03pm.
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The most common design for this type of data is to use a grid to list the records and a panel/dialog/form to display the detail.
There is nothing dynamic about the UI, especially with WPF/Silverlight, you should know what the columns are and can therefore name the grid columns and the form controls.
As you have all the information you then design the view placing the controls where you want them.
The grid should be bound to a collection and there should be a selecteditem bound to the grid and the form controls.
I suggest you get a book on WPF and work through some examples you do not have a grasp of the fundamentals yet.
Never underestimate the power of human stupidity
RAH
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In addition to Mycroft's comments I would mention that there is also a Silverlight WPF forum[^], which may be a better place for future questions.
One of these days I'm going to think of a really clever signature.
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This sounds like it can be done with a ListBox or something similar, data bound to the result of the query. The rows of a list box can be complex controls (or groups of controls), by changing the ItemTemplate.
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Thank you all for your assistance
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I want use dll to create a program that can received sms from
mobile and do something;
1-which dll can I used?
2-which mobiles can supported?
pls i want quick answer ;
note : the mobile connected with computer by a USB cable;
I use C# 2010;
modified 25-Oct-12 6:02am.
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Saied Ghazal wrote: pls i want quick answer
That's rude.
The difficult we do right away...
...the impossible takes slightly longer.
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If you want quick answers then there are three things you should do:
1) Don't use a subject like "Hi All" - it tells us nothing about your problem and is thus a complete waste of time - yours and ours.
2) Don't damand a quick answer - that is rude (as has been mentioned) and thus can delay answers rather than encouraging them. Remember that you do not pay our wages even indirectly, so you are not in a position to demand our attention.
3) Try google. It is quick and easy - heck even my wife can use it - and if you try even a little bit you can find an answer without working up a sweat. I did - it took about 20 seconds to find a page with relevant info starting with a text string copied from your question.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
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Here[^]
read it and update this post.
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