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PORecursive Hierarchical Joins with Depth
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  1. PORecursive Hierarchical Joins with Depth
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    copied!<p>I followed this <a href="http://www.superstarcoders.com/blogs/posts/recursive-hierarchical-joins-in-c-sharp-and-linq.aspx" rel="nofollow"><strong>Recursive Hierarchical Joins in C# and LINQ</strong></a> post to implement recursive join extension to show a tree view data in my application. As i have 15000 tree nodes, the jQuery <a href="http://wwwendt.de/tech/dynatree/doc/dynatree-doc.html" rel="nofollow"><strong>DynaTree</strong></a> at client side preparation takes lot of time (50 Secs) in buggy browser I.E 7&amp;8</p> <p>To avoid this i decided to load only one level initially, then load other children on demand (Lazy Loading).</p> <p>But i could not see the effect in setting depth in recursive join. Even i specify, it prepare all nodes. </p> <pre><code>public static List&lt;DynaTreeNode&gt; GenerateTreeByDepth(List&lt;NodeDTO&gt; nodeList, int deepLevel) { StringBuilder hirTree = new StringBuilder(); List&lt;DynaTreeNode&gt; tree = new List&lt;DynaTreeNode&gt;(); IEnumerable&lt;DynaTreeNode&gt; nodes = nodeList.RecursiveJoin (element =&gt; element.DataPointSK,element =&gt; element.DataPointSKParent, (NodeDTO element, int index, int depth,IEnumerable&lt;DynaTreeNode&gt; childNodes) =&gt; new DynaTreeNode() { title = element.DataPoint, key = element.DataPointSK.ToString(), children = childNodes.ToList(), select = element.selected, expand = element.selected, Depth = deepLevel }); tree = nodes.ToList(); return tree; } </code></pre> <p>I tried setting depth </p> <blockquote> <p><strong>Depth = deepLevel</strong></p> </blockquote> <p>But no use. What could be the issue? How can i do this? </p>
 

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