Displaying External Content
You can load any external content into a RadPane control by setting the ContentUrl property to the URL for the source of the content.
If the RadPane control contains any controls or text, they are discarded when you set the ContentUrl property.
If the resulting content of the pane exceeds its size, the RadPane control displays scrollbars. You can control which scrollbars are displayed when this happens using the Scrolling property.
When Scrolling is "None", the RadPane never displays scroll bars. If the content exceeds the size of the pane, it is cropped.
When Scrolling is "X", the RadPane displays only a horizontal scroll bar when the content exceeds its width. If the content exceeds the height of the pane, it is cropped.
When Scrolling is "Y", the RadPane displays only a vertical scroll bar when the content exceeds its height.If the content exceeds the width of the pane, it is cropped.
When Scrolling is "Both", the RadPane can display both horizontal and vertical scroll bars when the content exceeds its size.
If you want to use a pane with external content from other links in your page, you can set the target property of the link to the same value as the ClientID property of the pane. When the user clicks the link, the pane will display the content.
Example
The following example shows how to display external URL in a RadPane control and how to change it with hyperlinks. Note that the "MiddlePane" text is never displayed:
<telerik:RadSplitter RenderMode="Lightweight" runat="server" id="RadSplitter1"
Orientation="Horizontal" width="90%" height="600px">
<telerik:RadPane runat="server" id="LinkPane" Height="75">
<a href="https://www.telerik.com"
target="<%= ContentPane.ClientID %>">Telerik
</a><br />
<a href="http://www.msn.com"
target="<%= ContentPane.ClientID %>">MSN
</a><br />
<a href="http://www.google.com"
target="<%= ContentPane.ClientID %>">Google</a>
</telerik:RadPane>
<telerik:RadSplitBar runat="server" id="RadSplitBar1" />
<telerik:RadPane runat="server" id="ContentPane"
contenturl="https://www.telerik.com">
This text is never shown
</telerik:RadPane>
</telerik:RadSplitter>