In order to set the above mentioned property to the the Editor's Image Manager, you need to register the Editor's external dialogs, by setting their path to the ExternalDialogsPath
property. After that you will be able to modify the ImageEditor.ascx
dialog and disable the paging of the files:
Note, that When you are using external dialogs
in an Editor, it is highly recommended to verify that you use the EditorDialogs
folder from the same installation and after that to customize the new dialogs files from scratch.
The external dialogs could be found in the installation folder of the RadContrlols e.g. C:\Program Files (x86)\Telerik\RadControls for ASP.NET AJAX Q3 2012\EditorDialogs as well as in the RadControls ZIP package.
All the best,
the Telerik team
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