Learn to program the Revit API by Boost Your BIM
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Learn to program the Revit API by Boost Your BIM

Learn how to customize, automate, and improve Autodesk Revit software.
4.0 (101 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
533 students enrolled
Created by Harry Mattison
Last updated 9/2017
Price: $195
30-Day Money-Back Guarantee
  • 5.5 hours on-demand video
  • 3 Articles
  • 6 Supplemental Resources
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • In this course, you will learn how to write Revit API code in the C# language to perform a wide variety of tasks.
View Curriculum

This course is for people who want to do more with the Autodesk Revit building information modeling software.

You can do a lot of great things with Revit as it ships "out of the box" from Autodesk, but there are still many tasks that are repetitive, boring, and error-prone. There are also many situations where you can be more effective and productive if you can add additional functionality to Revit.

This course will cover a wide range of topics in the Revit API. Each topic will be taught by walking through a set of C# code samples that progress from the basics to more advanced concepts.

More content will be added to this new course in the upcoming weeks. If you see a topic that you like added, just let me know and I will try to make that addition.

Who is the target audience?
  • Revit users who want to do more with Revit.
  • No programming experience is needed. Novice programmers may find it helpful to supplement this course with some of the many free resources online.
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Curriculum For This Course
42 Lectures
Revit API Basics
9 Lectures 01:18:42

Prompt the user to select an element and retrieve data from that element.

The "Exception Handling" lecture is recommended to learn how to handle the user pushing the ESC key during a selection prompt.

Prompt user to select an element & get element info

Prompt user to select edge or face & get edge/face info

Get the elements selected in the Revit UI and use the API to set which elements are selected.

Selection - getting and setting selected elements

Find elements in a Revit model using filters by Class (such as Wall or FamilyInstance) and Category (such as Door and Window)

Find Elements - FilteredElementCollector #1

Find elements that are visible in a specific view.

Find elements whose bounding box is inside a 3D space defined by two mouse-clicks

Find Elements - FilteredElementCollector #2

Use LINQ (Language-Integrated Query) syntax to develop more sophisticated queries of elements in the Revit model

Find Elements - LINQ queries

Create an external command using Visual Studio Express

Create an External Command

Create family types, family parameters, and set parameter values

Family Types and Parameters
.NET, C# and general programming basics
8 Lectures 01:19:47

Revit macros to read and write text files

Preview 14:09

Find the TEMP folder and the My Documents folder, combine folder and file names, and find all files in a folder.

Preview 07:45

Read data from Excel into a Revit API external command

Read from Excel into a Revit API external command

How to write Revit data to an Excel file in a Revit API external command.

Includes using the Process.Start command to open a file in its default application.

Write Revit data to Excel

How to handle exceptions (errors) that occur while running your Revit API code.

Exception Handling

How to write and reuse functions that make your code easier to update and maintain with fewer bugs.

Code Reuse and Helper Functions

What it means when a member of the Revit API is marked "obsolete"

Obsolete Members

Create a Windows Form dialog to allow the user to enter information that will be used by an API command

Creating Windows Forms for User Input
Element Operations
9 Lectures 01:08:24

How to modify the Revit Document and delete an element

Delete an element - Intro to modifying the document

Create a text note

Create text note and get and set parameter values

How to check the type of a parameter (string, integer, double, element id) and set its value

Set parameter value & Check parameter storage type

Get data from a Revit element using Built In Parameters

Built in parameters

Create wall

How to create a Furniture family instance

Create Family Instance (Furniture)

Create Family Instance (Door)

Element Rotation

Get Workset of an element
Element Geometry
2 Lectures 21:57

Find the point or curve that defines the location of an element

Element Location - LocationCurve & LocationPoint

Find area of faces of walls, floors, roofs, and other host objects.

Watch "Code Reuse" lecture to learn how to improve the code shown here.

Get geometry of host faces
Debugging Revit API Code
2 Lectures 12:13

Step Into a Macro to debug your macro code. Set breakpoints and create watches in SharpDevelop to see what is happening as your code executes.

Step Into a Macro

Debugging external commands in Visual Studio
Intermediate / Advanced topics
7 Lectures 01:06:39

How to prompt the user for a selection and only allow selection of specific categories

Selection Filters

How to register an event to automatically run Revit API code when specific actions occur in the Revit session.

The DocumentSaving event is demonstrated in this lecture to show how to create and update a log file with the time of save and the user's name.


Create a ribbon tab, panels, and buttons with an external application

Ribbon UI - tab, panels, buttons

Write comments to the journal file

Store data in Revit elements that is accessible only via the Revit API

Extensible Storage

How to "see" in the Revit model by shooting imaginary arrows and finding out what they hit

Reference Intersector

How your API code can automatically react to user changes in the Revit model

Dynamic Model Update
Source Code from BoostYourBIM blog posts
2 Lectures 00:00

See this in action at http://youtu.be/dY9g4MATRG0

Get Categories & Materials from multiple Revit families
1 page

See this in action at http://youtu.be/VKT0_wBAdiY

Record view creation date in a shared parameter
1 page
Responses to Questions
1 Lecture 00:00

This "lecture" will contain code samples to answer questions. This is being done because code formatting does not display properly in the Udemy Q&A interface.

Code Samples
Boost Your BIM "Sneak Peek" Installers
2 Lectures 00:10
File Version Check

Topo From Lines
About the Instructor
Harry Mattison
4.2 Average rating
110 Reviews
537 Students
2 Courses
Founder of Boost Your BIM

Harry is the founder of Boost Your BIM, a software development and training company that collaborates with AEC firms to make Revit better. Boost Your BIM customers benefit from custom-built API applications that extend Revit’s capabilities and enable them to complete their work faster and with better results.

Boost Your BIM has built applications to automate routine tasks, enforce company standards, extract model data, use the Revit UI more efficiently, and solve other problems that would be difficult or impossible to do with Revit in its “out of the box” state.

Harry was an employee of Revit Technology Corporation and Autodesk from 1998 to 2012 and spent four of those years developing and testing new Revit APIs in areas such as the Family Editor, Massing, Analysis Visualization, Dynamic Model Update, and Views & Schedules.