Elmah.MVC + NLog - store all errors in one place - sql-server

Question

I'm working on an ASP.NET MVC 5 app in Visual Studio 2015. We use NLog to write some errors and other information to the database in our try/catch blocks. However, it would be nice to also implement ELMAH.MVC, so that any/all uncaught exceptions get caught/logged and the user redirected to a friendly page.
Here's our NLog table structure; note that ApplicationId is not equivalent to Application on the ELMAH_Error table; people apply for things through the app, and this is the ID we assign when they start the process. And RouteId is not an MVC route.
CREATE TABLE [dbo].[Log](
[Id] [int] IDENTITY(1,1) NOT NULL,
[ApplicationId] [int] NULL,
[RouteId] [int] NULL,
[MachineName] [varchar](50) NULL,
[TimeStamp] [datetime2](7) NULL,
[LogLevel] [varchar](5) NULL,
[Logger] [nvarchar](max) NULL,
[Message] [nvarchar](max) NULL,
[Exception] [nvarchar](max) NULL,
[StackTrace] [nvarchar](max) NULL,
CONSTRAINT [PK_Log] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
The SQL for ELMAH's table looks like this (from the script here):
CREATE TABLE [dbo].[ELMAH_Error]
(
[ErrorId] UNIQUEIDENTIFIER NOT NULL,
[Application] NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Host] NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Type] NVARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Source] NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[Message] NVARCHAR(500) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[User] NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[StatusCode] INT NOT NULL,
[TimeUtc] DATETIME NOT NULL,
[Sequence] INT IDENTITY (1, 1) NOT NULL,
[AllXml] NTEXT COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
)
ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
Is it possible to have the ELMAH_Error table contain the additional columns found on the NLog Log table, or vice versa? How can I write errors from NLog to the ELMAH table?
Thank you.
Update 1: Came across this: https://github.com/ccellar/nlog-elmah-target, but it lacks any documentation on how you use it. Would this redirect all NLog exceptions to ELMAH?
Update 2: A related question has been asked about adding the Exception.Data dictionary to ELMAH. This way, any number of key/value pairs can be added to what Elmah stored. This way, all the data now stored with NLog would be stored on ELMAH.

Answer 1

Found a solution that works very nicely: https://github.com/NLog/NLog.Elmah/
To install,
Install-Package NLog.Elmah
Update-Package NLog
I also installed NLog.Web package, but isn't required for this.
Modify NLog.config to include:
<targets><target name="target1" xsi:type="Elmah" LogLevelAsType"false" /></targets>
<rules><logger name="*" minlevel="Info" writeTo="target1" /></rules>
Now just decorate any controller/class that uses NLog with the target:
[Target("Elmah")]
public class HomeController : Controller
{
private static Logger _logger = LogManager.GetCurrentClassLogger();
public ActionResult Index()
{
// Other code...
var logEvent = new LogEventInfo(LogLevel.Info, _logger.Name, "Some information...");
_logger.Log(logEvent);
// Other code...
}
}
You can also throw the attribute on a base controller/class and cover all your application.