The Datadog team has released a new C# client library called DogStatsD that allows .NET developers to monitor custom metrics in their applications. The library is part of the Datadog Agent and can be used with Microsoft Visual Studio 2012 to send metrics to Datadog for real-time graphing and analysis. To get started, users need to install the NuGet package manager and set up a running Windows Datadog Agent on their machine. Once installed, developers can use the library to monitor custom metrics in their applications, such as authentication times or unique user counts. The client library is easy to integrate into ASP.NET MVC 4 web applications and provides detailed documentation for its usage.