log4net SDK Reference |

# LogImpl.IsDebugEnabled Property

Checks if this logger is enabled for the `DEBUG` level.

[Visual Basic]
Overridable Public ReadOnly Property IsDebugEnabled As Boolean _
Implements ILog.IsDebugEnabled
[C#]
public virtual bool IsDebugEnabled {get;}

#### Property Value

`true` if this logger is enabled for `DEBUG` events, `false` otherwise.

#### Implements

ILog.IsDebugEnabled

#### Remarks

This function is intended to lessen the computational cost of disabled log debug statements.

For some `log` Logger object, when you write:

    [C#]
    log.Debug("This is entry number: " + i );

You incur the cost constructing the message, concatenation in this case, regardless of whether the message is logged or not.

If you are worried about speed, then you should write:

    [C#]
    if (log.IsDebugEnabled())
    {
     log.Debug("This is entry number: " + i );
    }

This way you will not incur the cost of parameter construction if debugging is disabled for `log`. On the other hand, if the `log` is debug enabled, you will incur the cost of evaluating whether the logger is debug enabled twice. Once in `IsDebugEnabled` and once in the `Debug`. This is an insignificant overhead since evaluating a logger takes about 1% of the time it takes to actually log.

#### See Also

LogImpl Class | log4net.Core Namespace