Databinding expressions are only supported on objects that have a DataBinding event. The grid columns properties cannot be set using databinding.Instead you can use controls like labels inside the HeaderTemplate of a GridTemplateColumn.
Thanks for the proposal, but it is unfortunately not the only place i should use this kind of functionality. The idea is that I use a resource-file (.resx) to translate everything in my webapplication, and therefore have to use these text-snippets many places at the site.
Do anyone have an idea what to do? Can I extend radcontrols with for example an attribute called "LanguageResourceID" and depending one what the control are, can do my text-replacing-stuff?
Check out the following document which explains on how to localize various elements of Telerik RadGrid using Resource files. Also refer to the code library project link provided within the document. Localization through resource files