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|  | 1 | +# Serilog.Sinks.Notepad [](https://www.nuget.org/packages/Serilog.Sinks.Notepad) [](http://stackoverflow.com/questions/tagged/serilog) | 
|  | 2 | + | 
|  | 3 | +A [Serilog](https://serilog.net) sink that writes log events to Notepad (_Yes, you've read it right!_). The default output is plain text; JSON formatting can be plugged in using a package such as [_Serilog.Formatting.Compact_](https://github.com/serilog/serilog-formatting-compact). | 
|  | 4 | + | 
|  | 5 | + | 
|  | 6 | + | 
|  | 7 | +## Give a Star! :star: | 
|  | 8 | + | 
|  | 9 | +If you like or are using this project please give it a star. Thanks! | 
|  | 10 | + | 
|  | 11 | +## Getting started | 
|  | 12 | + | 
|  | 13 | +Install the [Serilog.Sinks.Notepad](https://www.nuget.org/packages/Serilog.Sinks.Notepad) package from NuGet: | 
|  | 14 | + | 
|  | 15 | +```powershell | 
|  | 16 | +Install-Package Serilog.Sinks.Notepad | 
|  | 17 | +``` | 
|  | 18 | + | 
|  | 19 | +To configure the sink in C# code, call `WriteTo.Notepad()` during logger configuration: | 
|  | 20 | + | 
|  | 21 | +```csharp | 
|  | 22 | +Log.Logger = new LoggerConfiguration() | 
|  | 23 | +    .WriteTo.Notepad() | 
|  | 24 | +    .CreateLogger(); | 
|  | 25 | + | 
|  | 26 | +Log.Information("Hello, world!"); | 
|  | 27 | +``` | 
|  | 28 | + | 
|  | 29 | +Open Notepad, and you should see the logs appear in that Notepad window. By default, `Serilog.Sinks.Notepad` writes messages to the most recent `notepad.exe` started on the machine. This behavior can be changed in the sink configuration. | 
|  | 30 | + | 
|  | 31 | +## Background | 
|  | 32 | + | 
|  | 33 | +I created this sink just for fun, after reading [this comment on Reddit](https://www.reddit.com/r/programming/comments/gnazif/ray_tracing_in_notepadexe_at_30_fps/fr8uy2l/): | 
|  | 34 | + | 
|  | 35 | + | 
|  | 36 | + | 
|  | 37 | +I thought that's a clever idea to be able to simply open a Notepad instance and immediately start receiving logs from your application, and I can imagine this actually being useful for troubleshooting issues with applications. | 
|  | 38 | + | 
|  | 39 | +## Configuration | 
|  | 40 | + | 
|  | 41 | +### Output templates | 
|  | 42 | + | 
|  | 43 | +The format of events written to Notepad can be modified using the `outputTemplate` configuration parameter: | 
|  | 44 | + | 
|  | 45 | +```csharp | 
|  | 46 | +    .WriteTo.Notepad( | 
|  | 47 | +        outputTemplate: "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj}{NewLine}{Exception}") | 
|  | 48 | +``` | 
|  | 49 | + | 
|  | 50 | +The default template, shown in the example above, uses built-in properties like `Timestamp` and `Level`. Properties from events, including those attached using [enrichers](https://github.com/serilog/serilog/wiki/Enrichment), can also appear in the output template. | 
|  | 51 | + | 
|  | 52 | +### JSON output | 
|  | 53 | + | 
|  | 54 | +The sink can write JSON  output instead of plain text. `CompactJsonFormatter` or `RenderedCompactJsonFormatter` from [Serilog.Formatting.Compact](https://github.com/serilog/serilog-formatting-compact) is recommended: | 
|  | 55 | + | 
|  | 56 | +```powershell | 
|  | 57 | +Install-Package Serilog.Formatting.Compact | 
|  | 58 | +``` | 
|  | 59 | + | 
|  | 60 | +Pass a formatter to the `Notepad()` configuration method: | 
|  | 61 | + | 
|  | 62 | +```csharp | 
|  | 63 | +    .WriteTo.Notepad(new RenderedCompactJsonFormatter()) | 
|  | 64 | +``` | 
|  | 65 | + | 
|  | 66 | +Output theming is not available when custom formatters are used. | 
|  | 67 | + | 
|  | 68 | +### XML `<appSettings>` configuration | 
|  | 69 | + | 
|  | 70 | +To use the Notepad sink with the [Serilog.Settings.AppSettings](https://github.com/serilog/serilog-settings-appsettings) package, first install that package if you haven't already done so: | 
|  | 71 | + | 
|  | 72 | +```powershell | 
|  | 73 | +Install-Package Serilog.Settings.AppSettings | 
|  | 74 | +``` | 
|  | 75 | + | 
|  | 76 | +Instead of configuring the logger in code, call `ReadFrom.AppSettings()`: | 
|  | 77 | + | 
|  | 78 | +```csharp | 
|  | 79 | +Log.Logger = new LoggerConfiguration() | 
|  | 80 | +    .ReadFrom.AppSettings() | 
|  | 81 | +    .CreateLogger(); | 
|  | 82 | +``` | 
|  | 83 | + | 
|  | 84 | +In your application's `App.config` or `Web.config` file, specify the Notepad sink assembly under the `<appSettings>` node: | 
|  | 85 | + | 
|  | 86 | +```xml | 
|  | 87 | +<configuration> | 
|  | 88 | +  <appSettings> | 
|  | 89 | +    <add key="serilog:using:Notepad" value="Serilog.Sinks.Notepad" /> | 
|  | 90 | +    <add key="serilog:write-to:Notepad" /> | 
|  | 91 | +``` | 
|  | 92 | + | 
|  | 93 | +To configure the Notepad sink and include the `SourceContext` in the output, change your `App.config`/`Web.config` to: | 
|  | 94 | +```xml | 
|  | 95 | +<configuration> | 
|  | 96 | +  <appSettings> | 
|  | 97 | +    <add key="serilog:using:Notepad" value="Serilog.Sinks.Notepad" /> | 
|  | 98 | +    <add key="serilog:write-to:Notepad.outputTemplate" value="[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj} <s:{SourceContext}>{NewLine}{Exception}" /> | 
|  | 99 | +``` | 
|  | 100 | + | 
|  | 101 | +### JSON `appsettings.json` configuration | 
|  | 102 | + | 
|  | 103 | +To use the Notepad sink with _Microsoft.Extensions.Configuration_, for example with ASP.NET Core or .NET Core, use the [Serilog.Settings.Configuration](https://github.com/serilog/serilog-settings-configuration) package. First install that package if you have not already done so: | 
|  | 104 | + | 
|  | 105 | +```powershell | 
|  | 106 | +Install-Package Serilog.Settings.Configuration | 
|  | 107 | +``` | 
|  | 108 | + | 
|  | 109 | +Instead of configuring the sink directly in code, call `ReadFrom.Configuration()`: | 
|  | 110 | + | 
|  | 111 | +```csharp | 
|  | 112 | +var configuration = new ConfigurationBuilder() | 
|  | 113 | +    .AddJsonFile("appsettings.json") | 
|  | 114 | +    .Build(); | 
|  | 115 | + | 
|  | 116 | +Log.Logger = new LoggerConfiguration() | 
|  | 117 | +    .ReadFrom.Configuration(configuration) | 
|  | 118 | +    .CreateLogger(); | 
|  | 119 | +``` | 
|  | 120 | + | 
|  | 121 | +In your `appsettings.json` file, under the `Serilog` node, : | 
|  | 122 | +```json | 
|  | 123 | +{ | 
|  | 124 | +  "Serilog": { | 
|  | 125 | +    "WriteTo": [{"Name": "Notepad"}] | 
|  | 126 | +  } | 
|  | 127 | +} | 
|  | 128 | +``` | 
|  | 129 | + | 
|  | 130 | +To configure the Notepad sink and include the `SourceContext` in the output, change your `appsettings.json` to: | 
|  | 131 | +```json | 
|  | 132 | +{ | 
|  | 133 | +  "Serilog": { | 
|  | 134 | +    "WriteTo": [ | 
|  | 135 | +      { | 
|  | 136 | +          "Name": "Notepad", | 
|  | 137 | +          "Args": { | 
|  | 138 | +            "outputTemplate": "[{Timestamp:HH:mm:ss} {Level:u3}] {Message:lj} <s:{SourceContext}>{NewLine}{Exception}" | 
|  | 139 | +          } | 
|  | 140 | +      } | 
|  | 141 | +    ] | 
|  | 142 | +  } | 
|  | 143 | +} | 
|  | 144 | +``` | 
|  | 145 | + | 
|  | 146 | +## Release History | 
|  | 147 | + | 
|  | 148 | +Click on the [Releases](https://github.com/augustoproiete/serilog-sinks-notepad/releases) tab on GitHub. | 
|  | 149 | + | 
|  | 150 | +--- | 
|  | 151 | + | 
|  | 152 | +_Copyright © 2020 C. Augusto Proiete & Contributors - Provided under the [Apache License, Version 2.0](http://apache.org/licenses/LICENSE-2.0.html)._ | 
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