C#: Generating Runtime Query and Executing

Question

I have been working on a project where the requirements of the customer is to provide the configuration access of parsing the RSS Feed in XML Format to user according to his requirement. After selecting the different parameters, a query is generated (LINQ to XML) and all the filters like Value.StartsWith/EndsWith/Contains are unknown. There can be unlimited filters but not out of the above three (StartsWith/EndsWith/Contains). I have this query in a String variable.

My Question is that, can we execute a query generated at runtime after the users selections ? The query is more likely to look like this

xmldoc.Descendants("item")
      .Where(c =>c.Element("description").Value.StartsWith("some text") 
             && c.Element(description).Value.Contains("some text") 
      .Select(c => c.Element(description).Value).Single();

If anyone knows that, is this possible or not. If yes where should i look next. thanks

I think you have an incoherence in your && and || operators. — xlecoustillier, Jul 10 '13 at 12:34
Oh yeah thats just a example query, main thing is to exectue query at runtime. — Jibran Khan, Jul 10 '13 at 12:36

score 0 · Answer 1 · answered Jul 10 '13 at 12:32

0

Yes it's possible. My favorite variant is to use PredciateBuilder to dynamicly build queries.

answered Jul 10 '13 at 12:32

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Thanks, let me go through it. – Jibran Khan Jul 10 '13 at 12:36

C#: Generating Runtime Query and Executing

1 Answers1