Computing directory tree depth-Based on LINQ

When a word is generated, you sometimes need to generate directories of all levels.

In this case, the depth of the directory tree needs to be calculated. There are many existing algorithms for finding the depth of the tree. This article mainly introduces a method of writing the code of LINQ. The code looks concise.

Public static int menudepth (list <menu> menulist, int parentid)
{
VaR children = menulist. Where (P => P. parentid = parentid );
If (children. Count () = 0)
Return 1;
Return 1 + children. Select (P => menudepth (menulist, P. ID). Max ();
}

 

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Computing directory tree depth-Based on LINQ