How to create a dynamic property in this scenario [duplicate]

This question already has answers here: Adding unknown (at design time) properties to an ExpandoObject (5 answers) Closed 8 years ago. 开发者_开发百科

I have a list which contains dynamic data. i.e

list[0].id=0;
list[1].id=1;
list[2].id=2;

I want to create a class which will have dynamic property names i.e

for(int i=0;i<list.count;i++)
{
    //create dynamic class with dynamic property name
    new {id+i=list[i].id} //this statement throws compilation error. 
}

what is alternative to this method?

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You can't do what you are after with Anonymous classes as they build at compile time and not runtime. You need to use the ExpandoObject class

dynamic expando = new ExpandoObject();
var p = expando as IDictionary<String, object>;

for(int i=0;i<list.count;i++)
{
     p[id+i] = list[i].id;
}

//do something with the expando object

This is based on the post that Jani linked in his comment.