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PODynamic LINQ
 

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    <p>I have an XML document defined like so</p> <p><strong>XML File</strong></p> <pre><code>&lt;TABLE&gt; &lt;RECORD&gt; &lt;PAGENUMBER&gt; 1 Of 1&lt;/PAGENUMBER&gt; &lt;OtherFields1&gt;..&lt;/OtherFields1&gt; &lt;OtherFields2&gt;..&lt;/OtherFields2&gt; &lt;/RECORD&gt; &lt;RECORD&gt; &lt;PAGENUMBER&gt; 1 Of 2&lt;/PAGENUMBER&gt; &lt;OtherFields1&gt;..&lt;/OtherFields1&gt; &lt;OtherFields2&gt;..&lt;/OtherFields2&gt; &lt;/RECORD&gt; &lt;RECORD&gt; &lt;PAGENUMBER&gt; 2 Of 2&lt;/PAGENUMBER&gt; &lt;OtherFields1&gt;..&lt;/OtherFields1&gt; &lt;OtherFields2&gt;..&lt;/OtherFields2&gt; &lt;/RECORD&gt; &lt;RECORD&gt; &lt;PAGENUMBER&gt; 1 Of 1&lt;/PAGENUMBER&gt; &lt;OtherFields1&gt;..&lt;/OtherFields1&gt; &lt;OtherFields2&gt;..&lt;/OtherFields2&gt; &lt;/RECORD&gt; &lt;/TABLE&gt; </code></pre> <p>I'm trying to create a dynamic query where i can put a "Fieldname", "Operand", "Value" in a config and LINQ can build a predicate based on it.</p> <p><strong>Config File</strong></p> <pre><code>&lt;CLAUSES&gt; &lt;CLAUSE name="PAGENUMBER" operand="!="&gt;Page 1 Of 1&lt;/CLAUSE&gt; &lt;CLAUSE name="OtherFields1" operand="!="&gt;String.Empty&lt;/CLAUSE&gt; &lt;/CLAUSES&gt; </code></pre> <p>Here is the LINQ i'm using now</p> <p><strong>LINQ Query</strong></p> <pre><code> XDocument jobXML = XDocument.Load(JobFile); List&lt;ClauseObj&gt; clauses = new List&lt;ClauseObj&gt;(); clauses.Add(new ClauseObj { Field = "PAGENUMBER", Operand = "!=", Value = " Page 1 Of 1" }); var q = jobXML.Descendants("RECORD").AsEnumerable(); foreach (var c in clauses) { switch (c.Operand) { case "!=": q = q.Where(r =&gt; r.Element(c.Field).Value != c.Value); break; } } </code></pre> <p>how can i make it read the where clauses "dynamically" and also specify which field names to return?</p>
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    1. CODuplicate of http://stackoverflow.com/questions/125400/generic-linq-query-predicate
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