NLog.config

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <targets async="true">
    <target xsi:type="Database"
            name="database"
            connectionStringName="MyContext"
            commandText="INSERT INTO [dbo].[LogEntries] ([CallSite], [Date], [Exception], [Level], [Logger], [MachineName], [Message], [StackTrace], [Thread], [Username]) VALUES (@CallSite, @Date, @Exception, @Level, @Logger, @MachineName, @Message, @StackTrace, @Thread, @Username);">
      <parameter name="@CallSite" layout="${callsite:filename=true}" />
      <parameter name="@Date" layout="${longdate}" />
      <parameter name="@Exception" layout="${exception}" />
      <parameter name="@Level" layout="${level}" />
      <parameter name="@Logger" layout="${logger}" />
      <parameter name="@MachineName" layout="${machinename}" />
      <parameter name="@Message" layout="${message}" />
      <parameter name="@StackTrace" layout="${stacktrace}" />
      <parameter name="@Thread" layout="${threadid}" />
      <parameter name="@Username" layout="${windows-identity:domain=true}" />
    </target>
  </targets>
  <rules>
    <logger name="*" minlevel="Info" writeTo="database" />
  </rules>
</nlog>