NLog use Connection String Name in appsettings - asp.net

Question

I have an NLog database target that looks like this:
<target xsi:type="Database" name="database"
connectionString="Server=.\SQLEXPRESS;Database=ApplicationOne;Trusted_Connection=True;MultipleActiveResultSets=true;User Id=User0101;Password=PW0101"
commandText="INSERT INTO [SchemaOne].[EventLogs](Id, Message, Level, Logger )VALUES(NewID(), #Message, #Level, #Logger)">
<parameter name="#Message" layout="${message}" />
<parameter name="#Level" layout="${level}" />
<parameter name="#Logger" layout="${logger}" />
</target>
Is it possible to change the connectionString to use connectionStringName from my appsettings instead?
My appsettings is called dssettings.json and it contains the connection details here:
"DatabaseConfiguration": {
"DatabaseName": "ApplicationOne",
"ConnectionName": "DefaultConnection",
"ConnectionString": "Server=.\\SQLEXPRESS;Database=ApplicationOne;Trusted_Connection=True;MultipleActiveResultSets=true;User Id=User0101;Password=PW0101"
},

Answer 1

Update NLog.Extension.Logging ver. 1.4.0
With NLog.Extension.Logging ver. 1.4.0 then you can now use ${configsetting}
See also: https://github.com/NLog/NLog/wiki/ConfigSetting-Layout-Renderer
Original Answer
With help from nuget-package NLog.Appsettings.Standard then you can normally do this:
<extensions>
<add assembly="NLog.Appsettings.Standard" />
</extensions>
<targets>
<target xsi:type="Database" name="database"
connectionString="${appsettings:name=DatabaseConfiguration.ConnectionString}"
commandText="INSERT INTO [SchemaOne].[EventLogs](Id, Message, Level, Logger )VALUES(NewID(), #Message, #Level, #Logger)">
<parameter name="#Message" layout="${message}" />
<parameter name="#Level" layout="${level}" />
<parameter name="#Logger" layout="${logger}" />
</target>
</targets>
But because you are using a special dssettings.json (instead of appsettings.json), then you probably have to implement your own custom NLog layout renderer:
https://github.com/NLog/NLog/wiki/How-to-write-a-custom-layout-renderer
Maybe you can use the source-code from the above nuget-package as inspiration for loading dssettings.json. Or maybe create PullRequest that adds support for specifying non-default config-filename.