I am trying to create a custom poco for solr in sitecore 8.I have referenced all dlls given in the solr support package.For some reason I am not able to find IndexField Attribute and also extensions like Page,GetResults ,Filter on GetQueryable as below.Any idea would help.
Thanks,
You're missing Sitecore.ContentSearch.Linq
reference.
Just add that reference to your project and all should be fine.
Also you don't need to add "_t" and other suffixes for your index field attributes.