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This method accepts an object called drawObject which actually contains the co-ordinates for drawing a shape on the canvas and the type of event. The core part of this JavaScript is function DrawIt(drawObject, syncServer). This receives the messages from a client and propagates to other clients and also maintains a group for set of users to control the proximity of sharing a particular whiteboard.
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He can then immediately start drawing and all others will be able to watch the canvas and they can also draw on the canvas. Once a user accesses this link, he will receive a canvas with some drawing tools and URL to share the canvas with others. Using the CodeĪ live demo is available here. Finally, I decided to create an online whiteboard using HTML5 and SignalR for drawing and sharing in real-time. For understanding and verifying its capabilities, I planned to try out something with HTML5 and SignalR. I've been spending some time exploring SignalR recently. This online whiteboard can be easily shared with anybody via a URL and can start drawing and watching in real-time.
Online whiteboards ipaint how to#
This tip will demonstrate the capabilities of HTML5 and ASP.NET SignalR and how to use them in ASP.NET MVC applications.