You have not explained what you are trying to actually achieve so no one knows what to answer.
Based on the contents of the site you posted I am guessing you have to create an ABL class that has a method in it which expects a character parameter and returns a value based on what is passed to it. Something like this?:
Code:
CLASS EnglishRadGridLocalizationProvider INHERITS Telerik.WinControls.UI.Localization.RadGridLocalizationProvider:
METHOD PUBLIC OVERRIDE CHARACTER GetLocalizedString (pID AS CHARACTER):
CASE pID:
WHEN Telerik.WinControls.UI.Localization.RadGridStringId:ConditionalFormattingPleaseSelectValidCellValue THEN
RETURN "Please select valid cell value".
...
END CASE.
END METHOD.
END CLASS.
Then in your main program you have this line at the very top or if a form in the form load event:
Code:
Telerik.WinControls.UI.Localization.RadGridLocalizationProvider:CurrentProvider = NEW EnglishRadGridLocalizationProvider().
I think this is what is required. If not the solution then try asking on a Telerik forum.