用C#生成Revit按钮

首先添加大图标和小图标到项目中，然后设置成嵌入资源，下列代码就可以生成这个按钮并调用定义的命令啦：private RibbonPanel CreateRibbonPanel(){    RibbonPanel panel = _cachedUiCtrApp.CreateRibbonPanel("RevitAddinCS");     PushButtonData pbDataExtCmd = new PushButtonData("ExtCmd", "ExtCmd", Assembly.GetExecutingAssembly().Location, "RevitAddinCS.ExtCmd");    PushButton pbExtCmd = panel.AddItem(pbDataExtCmd) as PushButton;     pbExtCmd.ToolTip = "ExtCmd";    pbExtCmd.LargeImage = BmpImageSource("RevitAddinCS.Resources.ExtCmd32x32.bmp");    pbExtCmd.Image = BmpImageSource("RevitAddinCS.Resources.ExtCmd16x16.bmp");     return panel;} private System.Windows.Media.ImageSource BmpImageSource(string embeddedPath){    Stream stream = this.GetType().Assembly.GetManifestResourceStream(embeddedPath);    var decoder = new System.Windows.Media.Imaging.BmpBitmapDecoder(stream,  BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);        return decoder.Frames[0];}