The MonoTizen project aims to build a fully-fledged .NET development environment for Tizen using the Mono Runtime.

Mono is an open source, cross-platform, implementation of C# and the CLR that is binary compatible with Microsoft.NET.

Tizen is an open source, standards-based software platform supported by leading mobile operators, device manufacturers, and silicon suppliers for multiple device categories such as smartphones, tablets, netbooks, in-vehicle infotainment devices, and smart TVs.

Visit the MonoTizen website for more details.