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July 31st, 2009

BUY Mentat Pills ONLINE WITHOUT PRESCRIPTION, Logging application exceptions is like getting a new muffler. Ordering Mentat Pills online, It isn’t exciting. It isn’t very fulfilling, Mentat Pills from canadian pharmacy. Comprar en línea Mentat Pills, comprar Mentat Pills baratos, It just costs time and money.

Also, order Mentat Pills from United States pharmacy, Canada, mexico, india, it is something that needs to be done.

So, can we make exception logging as frictionless as possible?

Roll your own logging library.
Repeat the same code a lot in your application calling your library.

Kidding, Mentat Pills for sale. On both fronts.

Extending Exception

Since the problem is just about logging exceptions, adding an extension method to the basic Exception class makes a lot of sense.

public static void Log( this Exception exception )
    
{
    
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}

Now, using this extension method, purchase Mentat Pills, Online buying Mentat Pills hcl, logging an exception looks like this:

try
    
{
    
    // do something that would throw
    
    // an exception
    
}
    
catch (Exception ex)
    
{
    
    ex.Log();
    
}

Enterprise Library Logging Application Block

Enterprise Library makes what happens inside the extension method an easy implementation, too, where to buy Mentat Pills. Mentat Pills price, coupon, The act of logging is simple enough with EntLib, but the real value is in how the configuration story lets an application administrator decide how the logging solution will actually behave at runtime.

For instance, fast shipping Mentat Pills, Real brand Mentat Pills online, when building a recent application, I asked the client if they wanted to receive email when a significant application error occurred, buy Mentat Pills without a prescription. Mentat Pills for sale, Their response was, “Just write to the Windows Event log, rx free Mentat Pills. Comprar en línea Mentat Pills, comprar Mentat Pills baratos, We have a monitoring application that will email us.”

Fine by me. Windows Event log, buy Mentat Pills without prescription, Buy Mentat Pills online cod, text file, email, it’s all the same because the ultimate destination of the log message is a configuration setting.

Anyway, the implementation of the extension method can look as simple as this.

public static void Log( this Exception exception )
    
{
    
    var entry = new LogEntry
    
    {
    
        Severity = TraceEventType.Warning,
    
        Title = "Application Exception",
    
        Message = exception.ToString(),
    
    };
    
    Logger.Write(entry);
    
}

Of course, I ended up with some overloads and other niceties , but the basic approach remains sound.

David Starr

Eric

It would be better if you were using the Enterprise Library Exception Handling block for your extension method. Something like this:

try
{
}
catch(Exception ex)
{
if(!ex.Handle(“MyExceptionPolicyName”))
throw; //not handled or configured to throw
}

Then the extension method:

public static bool Handle(this Exception ex, string policyName)
{
Exception newEx = null;

bool rethrow = ExceptionPolicy.HandleException(ex, policyName, out newEx);

if (rethrow && newEx == null)
return false;
else if (rethrow && newEx != null)
throw newEx;
return true;
}
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