Get property value from C# dynamic object by string (reflection?)

Question

Imagine that I have a dynamic variable:

dynamic d = *something* 

Now, I create properties for d which I have on the other hand from a string array:

string[] strarray = { 'property1','property2',..... } 

I don't know the property names in advance.

How in code, once d is created and strarray is pulled from DB, can I get the values?

I want to get d.property1 , d.property2.

I see that the object has a _dictionary internal dictionary that contains the keys and the values, how do I retrieve them?

Answer 1

I don't know if there's a more elegant way with dynamically created objects, but using plain old reflection should work:

var nameOfProperty = "property1"; var propertyInfo = myObject.GetType().GetProperty(nameOfProperty); var value = propertyInfo.GetValue(myObject, null); 

GetProperty will return null if the type of myObject does not contain a public property with this name.

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EDIT: If the object is not a "regular" object but something implementing IDynamicMetaObjectProvider, this approach will not work. Please have a look at this question instead:

• How do I reflect over the members of dynamic object?

Answer 2

This will give you all property names and values defined in your dynamic variable.

dynamic d = { // your code }; object o = d; string[] propertyNames = o.GetType().GetProperties().Select(p => p.Name).ToArray(); foreach (var prop in propertyNames) {     object propValue = o.GetType().GetProperty(prop).GetValue(o, null); }