'Declaration
 
Overloads Sub Critical( _
   ByVal exception As Exception, _
   ByVal category As String, _
   ByVal caption As String, _
   ByVal description As String, _
   ByVal ParamArray args() As Object _
) 

void Critical( 
   Exception exception,
   string category,
   string caption,
   string description,
   params object[] args
)

Parameters

exception

An Exception object to attach to this log message.

category

The application subsystem or logging category that the log message is associated with, which supports a dot-delimited hierarchy (e.g. the logger name in log4net).

caption

A simple single-line message caption. (Will not be processed for formatting.)

description

Additional multi-line descriptive message (or may be null) which can be a format string followed by corresponding arguments.

args

A variable number of arguments referenced by the formatted description string (or no arguments to skip formatting).

This method provides basic Loupe logging features for typical use. Loupe supports a separate caption and description in log messages in order to provide better analysis capability. Log messages can be grouped by their captions even while their full descriptions differ, so for more useful matching we don't provide format processing on the caption argument, only on the description argument.

The caption and description arguments tolerate null and empty strings (e.g. a simple one-line message caption with no further description needed). A null caption will cause the message caption to be extracted from the description after format processing (comparable to using the Trace...() methods which don't take a separate caption argument). A valid string caption argument, including an empty string, will be taken as the intended caption; an empty caption string is thus possible, but not recommended.

The log message will be attributed to the caller of this method. Wrapper methods should instead call the WriteMessage() method in order to attribute the log message to their own outer callers.

This overload also allows an Exception object to be attached to the log message. An Exception-typed null (e.g. from a variable of an Exception type) is allowed for the exception argument, but calls which do not have a possible Exception to attach should use an overload without an exception argument rather than pass a direct value of null, to avoid compiler ambiguity over the type of a simple null.

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ILog Interface
ILog Members
Overload List