Reading objects attributes of an Arraylist

[ree]

I have an arraylist and I want to read attributes of the object in it. But
with C++ using vectors its was straight forward. But I am lost with
arraylists as these can hold variety of objects.

 

[William Ryan eMVP]

If you use the logic in this example
http://www.knowdotnet.com/articles/reflectionmore.html you can just
substitute the hard coded object names for the values in your arraylist.
You can use the GetAttributes method (I didn't mention it explicitly). This
should help fill in the gaps
http://msdn.microsoft.com/msdnmag/issues/01/10/net/

HTH,

Bill

--
W.G. Ryan MVP Windows - Embedded

http://forums.devbuzz.com
http://www.knowdotnet.com/dataaccess.html
http://www.msmvps.com/williamryan/

 

[Morten Wennevik]

Hi ree,

Yes, an ArrayList will return objects so you need to cast the object back to it's original class or one of it's "parents" or interfaces to be able to access any properties.

You can test if an object can be cast to a class like this

object obj = list[0];

if(obj is MyClass)

And get the real type of the object with

Type t = obj.GetType();

Happy coding!
Morten Wennevik [C# MVP]

 

[Morten Wennevik]

Ah, upon rereading, I reliazed you asked about attributes, not properties.
You can try using the Type's Attributes property. Not exactly sure how to use it, but testing it on a string and converting the TypeAttribute using ToString() gave me

AutoLayout, AnsiClass, NotPublic, Public, Sealed, Serializable, BeforeFieldInit

Happy coding!
Morten Wennevik [C# MVP]