void BuildAndLoadSpriteSheet(string filename)
{
ContentBuilder builder = new ContentBuilder(XnaVersion.XNA_3_1, null);
builder.AddAssembly(String.Format("{0}\\{1}", Application.StartupPath, "XRealEngine.ContentPipeline.dll"));
builder.AddFileToBuild(filename, "sheet", "XmlImporter", "SpritesSheetContentProcessor");
builder.AddFileToBuild(filename, "sheet", "XmlImporter", "SpritesSheetContentProcessor");
builder.BasePath = Path.GetDirectoryName(filename);
builder.BuildProject();
ContentManager content = new ContentManager(View.Services, builder.ContentPath);
View.SpritesSheet = content.Load <SpritesSheet>("sheet");
}