Install serilog and configure in an asp .net 4.7.1 webapi

Install required NuGet packeges, open the Package Manager Console and type

Install-Package Serilog Install-Package Serilog.Sinks.File 

Create new static class with name logger that will have Serilog configuration

public static class Logger { private static readonly ILogger _errorLogger; static Logger() { _errorLogger = new LoggerConfiguration() .WriteTo.File(HttpContext.Current.Server.MapPath("~/logs/log-.txt"), rollingInterval: RollingInterval.Day) .CreateLogger(); } public static void LogError(string error) { _errorLogger.Error(error); } } 

Use logger class when you want to log error as below

Logger.LogError("Test error log!"); 

There are two ways one can configure Serilog in .net framework 4.7.2:

1. By using code only

2. By using app.config

Following nuget packages needed to be installed:

 Install-Package Serilog Install-Package Serilog.Settings.AppSettings Install-Package Serilog.Sinks.File 

1st Way (By Using code only):

Make a static serilogclass:

public static class SerilogClass { public static readonly Serilog.ILogger _log; static SerilogClass() { _log = new LoggerConfiguration(). MinimumLevel.Debug(). WriteTo.File(@Environment.GetEnvironmentVariable("LocalAppData") + "\\Logs\\Logs1.log"). CreateLogger(); } } 

Note: @Environment.GetEnvironmentVariable("LocalAppData") will save logfile into appdata folder

Initialize and Use the SerilogClass in program.cs

class Program { static readonly Serilog.ILogger log = SerilogClass._log; static void Main(string[] args) { log.Debug("This is serialog Example"); log.Debug("This is serialog Example2"); } } 

2nd Way(By using app.config):

Make a static serilogclass:

public static class SerilogClass { public static readonly Serilog.ILogger _log; static SerilogClass() { _log = new LoggerConfiguration(). ReadFrom.AppSettings(). CreateLogger(); } } 

Initialize and Use the SerilogClass in program.cs

 class Program { static readonly Serilog.ILogger log = SerilogClass._log; static void Main(string[] args) { log.Debug("This is serialog Example using app.config"); log.Debug("This is serialog Example2 using app.config"); } } 

We need too add <appSettings></appSettings> section to define all settings which we were doing via code in 1st way

App.config:

<configuration> <configSections></configSections> <appSettings> <add key="serilog:minimum-level" value="Debug"/> <add key="serilog:using:File" value="Serilog.Sinks.File" /> <add key="serilog:write-to:File.path" value="C:\Logs\LogSerilog.txt" /> <add key="serilog:write-to:File.shared" value="true" /> <add key="serilog:write-to:File.rollOnFileSizeLimit" value="true" /> <add key="serilog:write-to:File.fileSizeLimitBytes" value="2000" /> </appSettings> <startup></startup> <runtime></runtime> </configuration> 

In my case, i simply made a static serilog class and initialized it in main class to use it (for my console application .net framework 4.7.2):

 public static class SerilogClass { public static readonly Serilog.ILogger _log; static SerilogClass() { _log= new LoggerConfiguration(). MinimumLevel.Debug(). WriteTo.File(@"D:\MyPoject\Logs.log"). CreateLogger(); } } 

Program.cs:

 class Program { static readonly Serilog.ILogger log3 = SerilogClass._log; static void Main(string[] args) { log3.Debug("This is serialog Example"); } }