RadGridView/DropDown datasource performance

Hello, Alexey.

This sounds more like a general programming question. After further research in the appropriate forums, I have found the following useful threads on this topic:
https://stackoverflow.com/questions/15904625/which-net-collection-is-faster-enumerating-foreach-dictionary-values-or-list 
https://stackoverflow.com/questions/34953896/performance-dictionarystring-int-versus-liststring 
https://stackoverflow.com/questions/1769053/when-would-you-use-a-listkeyvaluepairt1-t2-instead-of-a-dictionaryt1-t2/1823659 
https://stackoverflow.com/questions/16977694/why-is-dictionary-so-much-faster-than-list 
https://stackoverflow.com/questions/15821634/lookup-performance-array-list-or-dictionary 

I hope this information helps. If you have questions about RadControls please let me know.  

Regards,
Nadya
Progress Telerik

Hi Nadya,

My question was not generic. I asked about Telerik WinForms controls specifically. What do you support the most efficient?

Hello, Alexey,

RadControls has a very flexible binding system that can cover various binding scenarios. The preferred binding type may be different due to the specific needs of each client's requirements and the desired control that they use. You can find information about data binding for each control in our documentation: https://docs.telerik.com/devtools/winforms/introduction 

If you need further assistance, could you please provide more information about the scenario that you have. Which is the desired control that you would like to use?

Looking forward to your reply.

Regards,
Nadya
Progress Telerik