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Verifying parent type on generic object

If I had the following variables defined:

System.Collecti ons.Generic.Bin dingList<String > obj1;
System.Collecti ons.Generic.Bin dingList<Int32> obj2;

And then I wanted to tell if an object was any type of generic
BindingList what would the syntax be? I can get it to work with
non-generic types, but can't seem to get the statement to return back
true for both obj1 and obj2. Something like the following doesn't work:

if (obj1 is System.Collecti ons.Generic.Bin dingList<object >) ...

Thanks.

Feb 8 '06 #1
3 2328
>if (obj1 is System.Collecti ons.Generic.Bin dingList<object >) ...

Try this

Type t = obj1.GetType();
if (t.IsGenericTyp e && t.GetGenericTyp eDefinition() ==
typeof(BindingL ist<>))
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Feb 8 '06 #2
That worked great. Thank you. Now that I know the object is a type of
BindingList is there a way to write a generic routine to use an
enumerator to loop through whatever type of BindingList was found
regardless of the generic parameter type? Casting it something like:

System.Collecti ons.Generic.Bin dingList<object > list =
(System.Collect ions.Generic.Bi ndingList<objec t>)obj;

doesn't work. Thanks again.

Kevin

Feb 8 '06 #3
>Now that I know the object is a type of
BindingList is there a way to write a generic routine to use an
enumerator to loop through whatever type of BindingList was found
regardless of the generic parameter type?


Sure, BingingList implements IEnumerable so you can use a foreach
loop.
Mattias

--
Mattias Sjögren [C# MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.
Feb 8 '06 #4

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