is it possible to use sharepoint server-side code inside the search core web part xstl? I have to join the search web part data and data from a custom list.
I am trying to achieve this functionality:
You can't use server side code inside the xslt. The only way to achieve your goal is by extending the core search web part.
By extending the core search results web part you can take control over the query (using server side code) and make your own query or just append your query using FQL (Fast Query Language) or keyword query. This way you can join the search web part data and data from a custom list.
For anyone who might fase the same issue this is how I solved it:
I created a xslt function. I used this link create-your-own-xslt-functions-using-c. it is a long blog that is why I am not pasting any code here. However, if you need help let me know. I hope it helps someone else.