adding new properties in expando object in foreach loop

Question

I have to add new properties in expando object in foreach loop but I am not able to see a way to do it. Here is the example:

var allProperties = new List { "Name", "Email", "Roles" }; allProperties.AddRange(metaDataModel.GetFormattedFolders());

dynamic expando = new ExpandoObject();
foreach (var s in allProperties)
{
    expando.s = string.Empty;
}

It consider 's' as a property instead of considering value of 's' as property name.

Thanks

Damith · Accepted Answer · 2014-04-14 10:09:53Z

7

var expando = new ExpandoObject() as IDictionary<string, Object>;
foreach (var s in allProperties)
{
    expando.Add(s, string.Empty);
}

answered Apr 14, 2014 at 9:55

Damith

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3 Comments

above does not work. It says:Cannot apply indexing with [] to an expression of type 'System.Dynamic.ExpandoObject'

Thanks. It works. Not sure why we have to cast it into IDictionary object to acheive this?

ExpandoObject is IDictionary<string,object> underneath but you can't use indexing with[] or adding properties like we do with normal Collections.