switch case like selection in LINQ-C#

How can i app开发者_运维问答ly switch..case like selection in LINQ ?

choice between this and this select this end

choice between this and this select this end

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choice between this and this select this end

choice between this and this select this end

Here is a simple example:

bool showEven = false;
var query = Enumerable.Range(0, 100);

switch (showEven)
{
    case true: query = query.Where(i => i % 2 == 0); break;
    case false: query = query.Where(i => i % 2 == 1); break;
}

foreach (var item in query)
    Console.WriteLine(item);