将列表转换为对象C＃

Question

I have a common method which accepts any paramater as object

public static object Populate(object anyStuff)
{

}

I to send a List of a user defined class to this. and then de serialize it again in the method to loop through it. I am not sure how to accomplish.

Answer 1

You can use Generics .

Where you can create the generic method that handles different type of list and operates on them:

public static T Populate<T>(List<T> list){
    //Do stuff
}

But if you are using talking about object (do note, not a good way you are trying to achieve):

public static object Populate(object anyStuff){
   //Explicit typecast
   List<string> value = anyStuff as List<string>();
}

If you want to know the usage of the first example with generic, here you can see the example

Answer 2

Usually you would create multiple overloads of Populate.

If I read your question correctly, you'd like something like this:

var properties = new Dictionary<string, object>
{
    {"Name", "Bart"},
    {"Date", new DateTime(2014,9,23)},
    {"Age", 300}
}
var item = HelperClass.Populate(properies)

Console.WriteLine(item.Name); // should print "bart"

If this is what you want, you should look into the dynamic ExpandoObject. (see http://blog.jorgef.net/2011/06/converting-any-object-to-dynamic.html )

public static dynamic Populate(IDictionary<string, object> anystuff)
{
    IDictionary<string, object> expando = new ExpandoObject()
    foreach(var key in anystuff)
    {
        expando[key] = anystuff[key];
    }
    return expando;
}