Converting from Var to Dynamic list and perform operations

Question

I have below type of code snippet.

var PersonList = new List<person>() { 
                new person { Name = "b", Age = 4 },
                new person { Name = "s", Age = 2 },
                new person { Name = "e", Age = 5 },
                new person { Name = "a", Age = 1 },
            }.AsQueryable();

// Now somewhere in usercontrol I am converting that list to dynamic.
dynamic DynaList = PersonList;

// Now below line gives me error when I try to perform any on DynaList.
DynaList.ToList(); // Error - BinderException
DynaList.OrderBy("Name"); // Error - BinderException

Why dynamic is not converting to its type runtime?

score 2 · Accepted Answer · edited May 23 '17 at 10:24

2

You can't use extension methods on dynamic types, as if the extension method was a method on the instance. See this SO post and this SO post. You have to use the extension methods on the underlying static class.

edited May 23 '17 at 10:24

Community

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answered Feb 19 '13 at 15:02

Brian Mains

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If you see a duplicate, please vote to close, rather than link it in an answer to scrape some rep. – Rawling Feb 19 '13 at 15:24

score 0 · Answer 2 · answered Feb 19 '13 at 15:20

0

Extension methods are not supported on dynamic types . Hope this Link will explain you the reason...

answered Feb 19 '13 at 15:20

skjcyber

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Converting from Var to Dynamic list and perform operations

2 Answers2