casting - cast dynamic object in other type .net -

.net 4 introduced dynamic objects can assign proprieties @ run time. have dynamic object , need cast in type. following code snippet

public class eobject : dynamicobject {          dictionary<string, object> m_dictfields = new dictionary<string, object>();          private string m_strname;         public string name         {             { return m_strname; }             set { m_strname = value; }         }  public override bool trygetmember(getmemberbinder binder, out object result)  {    if (m_dictfields.containskey(binder.name))    {     result = m_dictfields[binder.name];     return true;   }  else  {     return base.trygetmember(binder, out result);  } }  public override bool trysetmember(setmemberbinder binder, object value)  {     if (!m_dictfields.containskey(binder.name))       m_dictfields.add(binder.name, value);     else       m_dictfields[binder.name] = value;     return true;  } }       // assigning properties dynamic object       static void main(string[] args)     {         dynamic organization = new eobject();         organization.name = "test org name";         organization.modifiedon = datetime.now;         organization.createdon = datetime.now;         organization.modifiedby = "test modified by";         oganization.createdby = "test user";         // have done         eobject neworg = organization eobject;          console.writeline("org name: " +organization.name);  // working                      console.writeline("org name: " +neworg.name);  // not working      } 

i getting neworg object fields have added dynamically not accessible me. thanks

when compiler generates code expression organization.name detects type of variable organization being dynamic. decides postpone 'binding' process execution time, because not know object behind variable organization have name or modifiedon properties. methods trygetmember , trysetmember called during execution time whenever dynamic object won't have corresponding member. in example trygetmember , trysetmember wont called property name, because statically declared on eobject, called rest of member access defined.

when cast variable eobject in neworg, compiler static analisis, can see neworg references object name property, no modifiedon property, in particular neworg.name work (i don't know why doesn't), neworg.modifiedon won't pass compiler verification, issuing following error:

      'eobject' not contain definition 'modifiedby' , no extension      method 'modifiedby' accepting first argument of type 'eobject'      found (are missing using directive or assembly reference?)