public async Task <WallpaperModel> CreateWallpaperDraft(IFormCollection fc) { if (fc != null && fc.Files.Count > 0 && fc.Files[0].Length > 0) { var formFile = fc.Files[0]; var info = new WallpaperProjectInfo() { File = formFile.FileName }; var targetDir = await WallpaperApi.CreateWallpaperDraft(AppManager.UserSetting.Wallpaper.WallpaperSaveDir, info); var distFile = Path.Combine(targetDir, formFile.FileName); using var stream = System.IO.File.Create(distFile); await formFile.CopyToAsync(stream); var r = WallpaperApi.CreateWallpaperModel(distFile); if (string.IsNullOrEmpty(r.Info.Title)) { int lastIndex = r.Info.File.LastIndexOf("."); r.Info.Title = r.Info.File.Remove(lastIndex); } return(r); } return(null); }