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The following source code returns wrong type in Mono:
var doc = XDocument.Parse("<config><item name="A" /></config>"
var temp =
from item in root.XPathSelectElements("config/*")
let packet = new
Config = item.XPathEvaluate("."),
Name = item.XPathEvaluate("name(.)"),
As bug 2383 mentioned, the MSDN said that the return type should be "a bool, a double, a string, or an IEnumerable<T>".
When running in .NET 4.0, this piece of code returns:
System.Xml.XPath.XPathEvaluator+<EvaluateIterator>d__0`1[[System.Object, mscorlib, Version=220.127.116.11, Culture=neutral, PublicKeyToken=b77a5c561934e089]]
Which is an "IEnumerable<object>".
However, when running in Mono 18.104.22.168-1ubun, it returns:
It is an Iterator. And it could not cast into IEnumerable<object>, or IEnumerable.
Notice: It is quite different from bug 2383, which seems return a type which could cast into IEnumerable at least. However, in my case, it couldn't. So it is not easy to walk around so that it could run with both .NET and Mono.
Already fixed in mono 2.11