Error when using Harmony 2 with MelonLoader: 'Harmony' is a namespace but is used like a type

There is both Harmony the namespace (from MelonLoader) and Harmony the type. It's unfortunate that the MelonLoader authors did that, to be honest... however, there are options to stop it from being a problem:

First option: qualify the usage:

HarmonyLib.Harmony harmony = new HarmonyLib.Harmony("com.xbeardeddice.examplemod");

This becomes shorter if you use var:

var harmony = new HarmonyLib.Harmony("com.xbeardeddice.examplemod");

Second option: create an alias:

using HarmonyClass = global::HarmonyLib.Harmony; ... HarmonyClass harmony = new HarmonyClass("com.xbeardeddice.examplemod");