如何将formatProvider参数添加到NLog.LogEventInfo.Create方法？

Question

I have following NLog 2.0 code to log exceptions:

Dim theEvent = NLog.LogEventInfo.Create(NLog.LogLevel.Error, loggerName, message, ex)

After upgrading to NLog 4.1 I see following warning:

Function Create(logLevel As LogLevel, loggerName As String, message As String, exception As Exception) As LogEventInfo' is obsolete: 'use Create(LogLevel logLevel, string loggerName, Exception exception, IFormatProvider formatProvider , string message)'

... it asks me to add IFormatProvider formatProvider as parameter. What should I add there?

Dim theEvent = NLog.LogEventInfo.Create(NLog.LogLevel.Error, loggerName, ex, ???, message)

Answer 1

You can safely use null , one from the System.Globalization.CultureInfo members (a good guide can be found here ) or create your own custom format provider depending on your needs.

The current implementation (as of v.4.1.2 on GitHub ) will simply use CultureInfo.CurrentCulture if the FormatProvider property is null .