Dynamically adding properties to an ExpandoObject

Question

I would like to dynamically add properties to a ExpandoObject at runtime  So for example to add a string property call NewProp I would like to write something like  var x   new ExpandoObject    x AddProperty  NewProp   System String     Is this easily possible

User · Answer

i think this add new property in desired type without having to set a primitive value  like when property defined in class definition  var x   new ExpandoObject    x NewProp   default string

User · Answer

As explained here by Filip - http   www filipekberg se 2011 10 02 adding-properties-and-methods-to-an-expandoobject-dynamicly   You can add a method too at runtime   x Add  Shout   new Action      gt    Console WriteLine  Hellooo            x Shout

User · Answer

dynamic x   new ExpandoObject    x NewProp   string Empty    Alternatively   var x   new ExpandoObject   as IDictionary lt string  Object gt   x Add  NewProp   string Empty

User · Answer

Here is a sample helper class which converts an Object and returns an Expando with all public properties of the given object        public static class dynamicHelper                       public static ExpandoObject convertToExpando object obj                                  Get Properties Using Reflections                 BindingFlags flags   BindingFlags Public   BindingFlags Instance                  PropertyInfo   properties   obj GetType   GetProperties flags                      Add Them to a new Expando                 ExpandoObject expando   new ExpandoObject                    foreach  PropertyInfo property in properties                                        AddProperty expando  property Name  property GetValue obj                                       return expando                             public static void AddProperty ExpandoObject expando  string propertyName  object propertyValue                                  Take use of the IDictionary implementation                 var expandoDict   expando as IDictionary                  if  expandoDict ContainsKey propertyName                       expandoDict propertyName    propertyValue                  else                     expandoDict Add propertyName  propertyValue                             Usage     Create Dynamic Object dynamic expandoObj  dynamicHelper convertToExpando myObject      Add Custom Properties dynamicHelper AddProperty expandoObj   dynamicKey    Some Value

[c#] Dynamically adding properties to an ExpandoObject

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