log4net SDK Reference |

# ILog.WarnFormat Method (String, Object)

Logs a formatted message string with the Warn level.

[Visual Basic]
Sub WarnFormat( _
ByVal format As String, _
ByVal arg0 As Object _
)
[C#]
void WarnFormat(
string format,
object arg0
);

#### Parameters

format
  A String containing zero or more format items
arg0
  An Object to format

#### Remarks

The message is formatted using the `String.Format` method. See Format for details of the syntax of the format string and the behavior of the formatting.

This method does not take an Exception object to include in the log event. To pass an Exception use one of the Warn methods instead.

#### See Also

ILog Interface | log4net Namespace | ILog.WarnFormat Overload List | Warn | IsWarnEnabled