I've recently blogged about how excited I am by the promise of Blazor. Well, I've built my first Blazor app and, having tried it, I'm no less excited. There are still plenty of rough edges (which I talk about below), but it fundamentally works. In this post, I'll try to outline the pitfalls as best as I can, in the hope that others find it useful. Please don't construe anything I write as a criticism of the Blazor team – what they've done is already game-changing.