We've been asked several times, what is the right way of using connection strings from the configuration file, so that Telerik Reports would work both in run time and design time. The answer can be found in this new Knowledge Base article:
It is worth mentioning that the Report and Data Source Wizards do this automatically when instructed to save the selected connection string in the config file.
A working solution using the approach from the latter article can be found in our Visual Studio examples.
Stefan’s main interests outside the .NET domain include rock music, playing the guitar and swimming.