I'm very new to Umbraco and I'm trying to filter CurrentPage.Descendants based on multiple Query String values. Is there a way to building a .Where clause over multiple lines so that I can get my Query String value, evaluate it and in some cases translate to a property and then append the comparison onto the .Where clause? I found a solution on using a variable with .Where clause via dictionary objects, but I actually need to set different comparisons too. Any ideas?

I'm not familiar with XSLT and I'm using dynamic content. Any help would be very appreciated.