Truly interactive charts in web browser

IndustrialMike · Post by **IndustrialMike** » Wed Mar 29, 2006 12:52 pm

I'm coming back to Steema and having a look at the .NET offering after some years of working intermittently with the Teechart ActiveX controls in a web browser environment.

My initial impressions are that the .NET control is a major step backwards in functionality for web developers.

For example, with the ActiveX control, I could write highly interactive web pages involving scrolling, dynamically adding data and new series, zooming and re-ranging without ever incurring the penalty of a synchronous round trip to the server.

However, from reading the tutorials and help files, and some experimentation with the evaluation copy, it seems that the best I can do for my users with Teechart .NET is a gif in a web page. And there's no way I'm going to do that to them.

Whilst .NET holds the promise of embedding Winforms controls in a web page with a syntax like

Code: Select all

<object id="myCtl" classid="http:TeeChart.dll#Steema.TeeChart.TChart"></object>

it seems that such an approach is not documented anywhere in the Teechart documentation, and throws a security exception of you try it.

Am I missing something?

Narcís · Post by **Narcís** » Wed Mar 29, 2006 1:00 pm

Hi IndustrialMike,

Certainly TeeChart for .NET v2 in WebForms is not as much interactive as ActiveX version is because it can not be inserted in a WebForm as a "live" object as ActiveX version. However we are working on increasing its interactivity. Have you seen our live ASP.NET demo? It includes some interactive examples. This demo sources are also included with evaluation and registered installers.

It would be also helpful that you read Tutorial9 - ASP.NET Applications. Tutorials are available at TeeChart's program group.

IndustrialMike · Post by **IndustrialMike** » Fri Mar 31, 2006 4:09 am

Thanks for the reply. Steema is certainly not alone among chart vendors in this area. My guess is that the first to market with this feature will enjoy a competitive advantage for some time - are there any plans to enable this functionality in Teechart .NET?

Narcís · Post by **Narcís** » Fri Mar 31, 2006 3:54 pm

Hi IndustrialMike,

We have done some research in that field and we are planning to create a .ten file reader for WebForms.