Thank you for your answer,
Exacly, i have a SharePoint, with a lot of document. ans i need to create a link from document in kentico. i can't use transformation because i need to use 2 transformations.If i can use transformation is easy for find url of file, we juste need to use a macro {%# GetSharePointFileUrl() %}.
i would like use this function in code.
thank you for your help