Once the C1WebChart3D control has been added to the Visual Studio Toolbox, you can drag it onto your Web forms. When you add a C1WebChart3D control to the form, you will see a default chart with four data series and some random data. A Confirmation dialog box appears asking whether to add the HttpHandler or not. Click Yes to add the HttpHandler to the Web.Config file.
The following information is added to the Web.Config file:
<configuration>
<system.web>
<httpHandlers>
<add verb="*" path="c1chart3Dimage.aspx"
type="C1.Web.C1WebChart3D.ImageHttpHandler,C1.Web.C1WebChart3D.2"/>
</httpHandlers>
</system.web>
<configuration>
This step allows C1WebChart3D to use its internal HttpHandler to transfer chart images directly to the client without any temporary files. It is not strictly required (you can use temporary files if you prefer), but for most applications this is the most efficient method.
This topic is discussed in detail in a later section (see Understanding how C1WebChart3D Handles Images).