How identify object by Interface type

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moondaddy - 26 Feb 2007 20:30 GMT

I'm writing a .net3.0 WPF app in c# and want to determin if an object
implements a certain interface something like this:

UIElement elem = GetObjectClicked(e.source as DependancyObject)

if(elem.type==ISelectable)
{
return elem;
}

Where ISelectable is the interface I'm looking for. In otherwords, how do I
determin if 'elem' implements ISelectable?

Thanks

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Jon Skeet [C# MVP] - 26 Feb 2007 20:42 GMT

> I'm writing a .net3.0 WPF app in c# and want to determin if an object
> implements a certain interface something like this:
[quoted text clipped - 8 lines]
> Where ISelectable is the interface I'm looking for. In otherwords, how do I
> determin if 'elem' implements ISelectable?

if (elem is ISelectable)

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Jon Skeet - <skeet@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
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Keith Patrick - 26 Feb 2007 22:34 GMT

You can also use Type.IsAssignableFrom (if you have the type but not the
object ref)

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moondaddy - 27 Feb 2007 20:21 GMT

Thanks Jon,

That was too easy!

>> I'm writing a .net3.0 WPF app in c# and want to determin if an object
>> implements a certain interface something like this:
[quoted text clipped - 11 lines]
>
> if (elem is ISelectable)

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How identify object by Interface type

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