Reflection and PropertyInfo

[Oskar Lundgren]

I want to iterate over fields declared like this, using reflection
(and there are good reasons for that):

Protected WithEvents Foo1 As Bar
Protected WithEvents Foo2 As Bar
....

I use the following code to get an array containing the fields
(wrapped in PropertyInfo objects):

Dim objs As Object() =
Me.GetType().Ge tProperties(Ref lection.Binding Flags.Instance Or
Reflection.Bind ingFlags.NonPub lic)

My question is: How do I get the wrapped "Bar" objects (Foo1, Foo2 and
so on)out of the PropertyInfo objects, so I can make calls to the
methods of the "Bar" objects. Using GetValue on the PropertyInfo
objects does not work.

[Mattias Sjögren]

Re: Reflection and PropertyInfo

Oskar,
[color=blue]
>Using GetValue on the PropertyInfo
>objects does not work.[/color]

No? How does it fail?



Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[Jorge]

Reflection and PropertyInfo

Hello Oskar
See the following example its for MenuItem

<code>
Dim myForm As Type = f.GetType()

Dim fields As FieldInfo() = myForm.GetField s
(BindingFlags.I nstance Or BindingFlags.No nPublic)

For Each field As FieldInfo In fields

If field.FieldType .Name = "MenuItem" Then
Dim menu As MenuItem = DirectCast(fiel d.GetValue
(f), MenuItem)
'' you can use it here.
end if
next
</code>

Kind Regards
Jorge[color=blue]
>-----Original Message-----
>I want to iterate over fields declared like this, using[/color]
reflection[color=blue]
>(and there are good reasons for that):
>
>Protected WithEvents Foo1 As Bar
>Protected WithEvents Foo2 As Bar
>....
>
>I use the following code to get an array containing the[/color]
fields[color=blue]
>(wrapped in PropertyInfo objects):
>
>Dim objs As Object() =
>Me.GetType().G etProperties[/color]
(Reflection.Bin dingFlags.Insta nce Or[color=blue]
>Reflection.Bin dingFlags.NonPu blic)
>
>My question is: How do I get the wrapped "Bar" objects[/color]
(Foo1, Foo2 and[color=blue]
>so on)out of the PropertyInfo objects, so I can make[/color]
calls to the[color=blue]
>methods of the "Bar" objects. Using GetValue on the[/color]
PropertyInfo[color=blue]
>objects does not work.
>.
>[/color]

[Oskar Lundgren]

Re: Reflection and PropertyInfo

The error message I get (at runtime):

Property Get method was not found

This does sound reasonable to me, since I haven't declared such a
method...

Anyway, I have found a solution of my problem. I didn't need to use
reflection, since the Bar class is a subclass System.Web.UI.W ebControl
and these objects easily can be retrieved using the Controls collection.
And, yes, I'm new to Visual Basic .NET...

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