As you can see, the schema.Elements returns three elements one of whom is an EntityContainer element.
But when I try to sea开发者_C百科rch thru the Elements overload specifying the "EntityContainer" (schema.<EntityContainer>) it doesn't retrieve anything.

Answer found.
It didn't return anything since the EntityContainer element in the edmx file belongs to an imported namespace I forgot to import in my file.
Adding this line solved everything:
Imports <xmlns="http://schemas.microsoft.com/ado/2009/02/edm/ssdl">
加载中,请稍侯......
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