NLog not writing to Database Target - asp.net-mvc

Question

Having trouble getting the database target for NLog to work. I have 2 targets: FILE and DB.. here is my 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"
autoReload="true"
throwExceptions="false">
<variable name="appName" value="KoreCMS" />
<targets async="true">
<target xsi:type="File"
name="default"
layout="${longdate} - ${level:uppercase=true}: ${message}${onexception:${newline}EXCEPTION\: ${exception:format=ToString}}"
fileName="${basedir}\App_Data\Log\Debug.log"
keepFileOpen="false"
archiveFileName="${basedir}\App_Data\Log\Debug_${shortdate}.{##}.log"
archiveNumbering="Sequence"
archiveEvery="Day"
maxArchiveFiles="30"/>
<target xsi:type="Database"
name="database"
keepConnection="true"
useTransactions="true"
dbProvider="System.Data.SqlClient"
connectionStringName="DefaultConnection"
commandText="INSERT INTO Kore_Log(EventDateTime, EventLevel, UserName, MachineName, EventMessage, ErrorSource, ErrorClass, ErrorMethod, ErrorMessage, InnerErrorMessage) VALUES (#EventDateTime, #EventLevel, #UserName, #MachineName, #EventMessage, #ErrorSource, #ErrorClass, #ErrorMethod, #ErrorMessage, #InnerErrorMessage)">
<parameter name="#EventDateTime" layout="${date:s}" />
<parameter name="#EventLevel" layout="${level}" />
<parameter name="#UserName" layout="${aspnet-user-identity}" />
<parameter name="#MachineName" layout="${machinename}" />
<parameter name="#EventMessage" layout="${message}" />
<parameter name="#ErrorSource" layout="${event-context:item=error-source}" />
<parameter name="#ErrorClass" layout="${event-context:item=error-class}" />
<parameter name="#ErrorMethod" layout="${event-context:item=error-method}" />
<parameter name="#ErrorMessage" layout="${event-context:item=error-message}" />
<parameter name="#InnerErrorMessage" layout="${event-context:item=inner-error-message}" />
</target>
</targets>
<rules>
<logger name="*" writeTo="default" minlevel="Info" />
<logger name="*" writeTo="database" minlevel="Info" />
</rules>
</nlog>
And here is the DB design:
And here is the connection string:
<connectionStrings>
<add name="DefaultConnection" connectionString="Server=.\SQLExpress2012;Initial Catalog=MyDatabaseName;Integrated Security=True;Persist Security Info=True;MultipleActiveResultSets=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
What am I missing?

Answer 1

Alright, I figured it out... When I opened up SQL Profiler, I could see the INSERT command was indeed being sent, so I attempted to run the same command myself manually and discovered that I was being an idiot; basically, my Id column is setup as a uniqueidentifier and so of course it could not be auto incremented. The solution was to change the commandText in the Nlog.config to the following:
commandText="INSERT INTO Kore_Log(Id, EventDateTime, EventLevel, UserName, MachineName, EventMessage, ErrorSource, ErrorClass, ErrorMethod, ErrorMessage, InnerErrorMessage) VALUES (NEWID(), #EventDateTime, #EventLevel, #UserName, #MachineName, #EventMessage, #ErrorSource, #ErrorClass, #ErrorMethod, #ErrorMessage, #InnerErrorMessage)">

Answer 2

I got into same problem, reason was dbProvider value and connectionStringName key in nlog.config. I got it from here
<target name="database" xsi:type="Database" connectionString="${configsetting:name=sqlconnection.connectionString}"
dbProvider="Microsoft.Data.SqlClient.SqlConnection, Microsoft.Data.SqlClient">
Also,
connectionString should be used in place of connectionStringName
if Microsoft.Data.SqlClient is not added in dependency, it need to be added either using nuget package manager or manually.