Don't worry. Not everyone knows it...

This is a feature which can be used on the command line to watch our web application. Whenever a C# class is modified and saved, it automatically re-compiles and re-runs whatever command we pass into it. In other words, as soon as C# code is modified and saved, the watcher will see those changes and re-compiles the code without a need to close the running application . Let’s have a look on how it works. Step 1: Open any existing ASP.NET Core 2.0 project and open it’s project file by right clicking on project and clicking on ‘Edit XXX.csproj ‘ and add one more line as highlighted below: < ItemGroup >     < DotNetCliToolReference Include = " Microsoft.DotNet.Watcher.Tools " Version = " 2.0.2 " />     < DotNetCliToolReference Include = " Microsoft.EntityFrameworkCore.Tools.DotNet " Version = " 2.0.2 " />     < DotNetCliToolReference Include = " Microsoft.Extensions.SecretManager.Tools " Ver...