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POEntity Framework Using Predicates Issue
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  1. POEntity Framework Using Predicates Issue
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    copied!<p>I am using predicates to refine search options and am getting two different results when i run what looks to be the same query.</p> <p>This one is correct and returns the expected results:(hard coded strings) </p> <pre><code>_predicate = PredicateBuilder.False&lt;TBLDESIGN&gt;(); _predicate = _predicate.Or(a =&gt; a.IS_APPROVED == true &amp; a.ACTIVE == true &amp; a.DATE_APPROVED &gt; beginDate &amp; (a.KEYWORDS.Contains("red") || a.NAME.Contains("red"))); _predicate = _predicate.Or(a =&gt; a.IS_APPROVED == true &amp; a.ACTIVE == true &amp; a.DATE_APPROVED &gt; beginDate &amp; (a.KEYWORDS.Contains("geos") || a.NAME.Contains("geos"))); </code></pre> <p>This one only returns the results from the second predicate "geos". The first one in the loop("red") is ignored. Values "red" and "geos" are inside the loop below.</p> <pre><code>string searchTerm = ""; _predicate = PredicateBuilder.False&lt;TBLDESIGN&gt;(); for (int i = 0; i &lt; search.Count(); i++) { searchTerm = search[i].SearchTerm.Trim().ToString(); _predicate = _predicate.Or(a =&gt; a.IS_APPROVED == true &amp; a.ACTIVE == true &amp; a.DATE_APPROVED &gt; beginDate &amp; (a.KEYWORDS.Contains(searchTerm) || a.NAME.Contains(searchTerm))); } </code></pre> <p>Here is the rest of the query if that makes any difference.</p> <pre><code> var results = dbContext.TBLDESIGN .Include(s =&gt; s.LKPRICE) .Include(s =&gt; s.TBLDESIGNER) .AsExpandable().Where(_predicate) .OrderByDescending(s =&gt; s.DATE_APPROVED) .Select(s =&gt; new { s.ACTIVE, s.DATE_CREATED, s.EXPORTED, s.IMAGE_PATH, DesignId = s.ID, s.IS_APPROVED, s.TBLDESIGNER.FIRST_NAME, s.TBLDESIGNER.LAST_NAME, s.TBLDESIGNER.ALIAS, s.NAME, s.LKPRICE.PRICE, s.COMPLETED, s.DATE_APPROVED, DesignerId = s.TBLDESIGNER.ID, s.VIEW_COUNT }).ToList(); </code></pre> <p>Question is how to get the second list of predicates to return the same results as the first series. Guessing there is something extra to do when you are passing a string variable in rather than a hard coded value.</p> <p>Thanks, Billy</p> <p>Answer:</p> <pre><code>_predicate = PredicateBuilder.False&lt;TBLDESIGN&gt;(); for (int i = 0; i &lt; search.Count(); i++) { string searchTerm = search[i].SearchTerm.Trim().ToString(); _predicate = _predicate.Or(a =&gt; a.IS_APPROVED == true &amp; a.ACTIVE == true &amp; a.DATE_APPROVED &gt; beginDate &amp; (a.KEYWORDS.Contains(searchTerm) || a.NAME.Contains(searchTerm))); } </code></pre>
 

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