How do I get to a field of an anonymous type?

Question

I'm trying to work out how to get to the anonymous return value from my WebApi Controller, it does something like this:

public IActionResult Get() {
    using var db = DbDataContextFactory.Make();
    return Ok(new {
        feedTypes = db.GetStatisticsAllFeeds()
    });
}
...
IDictionary<string, ExpandoObject> GetStatisticsAllFeeds(this DbDataContext db) {}

Out of interest I want to call the Controllers Get and look at the returned data, easy right?

If I do this this:

... instantiate controller ...
IActionResult actionResult = sut.Get();
var okObjectResult = actionResult as OkObjectResult;
dynamic anon = okObjectResult.Value;

I can see that the anon object has a field called 'feedTypes' in the debugger

If I do This:

Type type = anon.GetType();
var fields = type.GetProperties();
foreach (var field in fields) {
    string name = field.Name;
    var temp = field.GetValue(anon, null);
    Console.WriteLine(name + "  " + temp);
}

I can see the the anon object has a feedTypes field.

But if I do this

var ft = anon.feedTypes;

I get the exception

An exception of type 'Microsoft.CSharp.RuntimeBinder.RuntimeBinderException' occurred in System.Linq.Expressions.dll but was not handled in user code: ''object' does not contain a definition for 'feedTypes''

How can I get to the actual field e.g.

IDictionary dict = anon.FeedTypes ... what goes here?

TIA.

@RufusL it seems, that OP is using it already `Type type = anon.GetType()` and so on — Pavel Anikhouski, Jun 03 '20 at 15:24
@PavelAnikhouski you're right, I didn't read the question carefully enough. — Rufus L, Jun 03 '20 at 15:48
You've already demonstrated that you know how to get a property value from a dynamic type. What specifically is the question here? — Rufus L, Jun 03 '20 at 15:50
you can't cast anonymous type to dynamic, but what you can do is anon.GetType().GetProperty("feedTypes").GetValue(anon) — sTrenat, Jun 03 '20 at 16:10
or just create normal class for it since you probably misused anonymous type — sTrenat, Jun 03 '20 at 16:13

How do I get to a field of an anonymous type?

0 Answers0