Your Revit add-in with a new wonderful ribbon tab - template visual studio

In this article I will explain a simple way to build a solution with a customized ribbon tab inside revit.

Let's start opening the basic template here.

Take a look to the code:

The first thing you need to do is to set your application  for creating a new ribbon tab:

 public class Applicationclass : IExternalApplication  
   {  
     #region IExternalApplication Members  
     public Autodesk.Revit.UI.Result OnStartup(UIControlledApplication application)  
     {  
       string path = Assembly.GetExecutingAssembly().Location; //<-----The path of the dll file for your addin  
       //add code here if you want to run functions on Revit Startup  
       //Set the contextual help which show help file pushing "F1"  
       ContextualHelp help = new ContextualHelp(ContextualHelpType.Url, "YOUR URL HERE");  
       //Create a new Ribbon tab  
       application.CreateRibbonTab("THE_TAB_NAME");  
       //Create a new Ribbon Panel inside the ribbon tab  
       RibbonPanel panel = application.CreateRibbonPanel("THE_TAB_NAME", "THE_PANEL_NAME");  
       //Create a new button and insert it into the panel  
       //btn1 = a unique identifier for the button  
       //Name_Button= The name of the button you want to be shown  
       //path = the path of the addin dll file  
       //Classname = the full class name for your command  
       PushButtonData manag = new PushButtonData("btn1", "Name_BUTTON", path, "Revit_AppWithCustomRibbon.YOURCOMMAND");  
       //set the contextual help for your command  
       manag.SetContextualHelp(help);  
       //add the button to the panel  
       panel.AddItem(manag);  
       return Result.Succeeded;  
     }  
     public Autodesk.Revit.UI.Result OnShutdown(UIControlledApplication application)  
     {  
       //Remove events if needed  
       return Result.Succeeded;  
     }  
     #endregion  
   }  

Now you are able to create your commands as I shown here:

   //Add your external commands here or in another file  
   [Autodesk.Revit.Attributes.Transaction(  
   Autodesk.Revit.Attributes.TransactionMode.Manual)]  
   public class YOURCOMMAND : IExternalCommand  
   {  
     public Result Execute(  
   ExternalCommandData commandData,  
   ref string message,  
   ElementSet elements)  
     {  
       TaskDialog.Show("Hello", "Hello world!");  
       return Result.Succeeded;  
     }  
   }  

Here the Code