Tooling for my new Spectrum game

My Spectrum game is coming along nicely but I have got to a point where I need to start adding levels. I needed a tool to help me create the standing data so I spent a few hours with Visual Studio writing an application in c#. Nothing over the top, just a couple of grid views and minimal code. It actually works rather well allowing me to build up a level and then creating the data statements ready to past straight into the TommyGun IDE. Here is a picture of the latest version of the tool. Having used it a bit I realised I need to add a couple of other features. I am also working on a separate class for the tool that will take all the level data and create one huge bitmap image of all the levels. I can now create some test levels and concentrate on writing the next chunk of Z80.