The advantage of the approach is that you can use a webpage within a webpage without to much additional configuration (except configuring its CORS policy appropriately).
The disadvantages are that some mobile device do not render iframes correctly, their browser support is limited and they are a resource intensive option for the client.
Loading content with AJAX
Alternatively, you can load the content from another server by sending an AJAX request and loading the response in the Splitter's pane:
verticalPanes.Add()
.Size("300px")
.HtmlAttributes(new { id = "bottom-pane" })
.LoadContentFrom("yourUrl");
This approach avoids the disadvantages of the iframe but instead requires you to configure the server to respond with the appropriate Html page.
For your convenience I am attaching a Telerik REPL that showcases the suggestions above.
Regards,
Stoyan
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