C# Array Creation

Question

I'm having trouble figuring out how to create array of dynamic generic ExpandoObject elements.

I started with this statement, which works:

/* WORKS */
dynamic expando = new ExpandoObject() as IDictionary<string,object>;

What I want is an array composed of such objects. The syntax I tried is this:

/* DOES NOT WORK */    
var expandoArray = new ExpandoObject[] as IDictionary<string, object>
{
    new ExpandoObject() as IDictionary<string, object>,
    new ExpandoObject() as IDictionary<string, object>
};

The idea is that after expandoArray is created, I could refer to its elements as a dynamic by using a construct like this (see http://weblog.west-wind.com/posts/2012/Feb/01/Dynamic-Types-and-DynamicObject-References-in-C):

dynamic expandoArrayDynamic = expandoArray[x];

So, my two specific questions are: 1. How do I create an array of Expando as IDictionary objects? 2. How do I view the array elements as dynamic objects?

ExpandoObject implicitly implementes IDictionary<string,object> and thus the cast isn't necessary. — Bauss
– Bauss, Commented Jun 5, 2016 at 16:25
Surely the cast ExpandoObject[] as IDictionary<string, object> is not valid, it should be like: ExpandoObject[] as IEnumerable<IDictionary<string, object>>? — Mike Jerred
– Mike Jerred, Commented Jun 5, 2016 at 16:26
@SLaks: Not sure what you mean--the first code sample uses IDictionary<string, object> correctly. If it doesn't please explain rather than simply chastise. — Jazimov
– Jazimov, Commented Jun 5, 2016 at 16:34

usr · Accepted Answer · 2016-06-05 16:31:37Z

2

Does this do what you want?

var expandoArray = new IDictionary<string, object>[]
{
    new ExpandoObject(),
    new ExpandoObject(),
};

answered Jun 5, 2016 at 16:31

usr

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