Relection on interfaces

[jupitermoonbeam@googlemail.com]

Hello,

I wondered if anyone could help. I wish to retrieve the PropertyInfo[]
of a specific interface but can't work out how to do this in a type
safe way.

Basically I don't want to do this:
void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies =
objectToReflect .GetType().GetP roperties();
}

Reason being it may have multiple interfaces or it's own properties and
the reflection is based on the object not on the parameter type (i.e.
GetType() returns will return object type which inherits the interface
not the interface itself).

So what I'm trying to do is this instead:
void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies =
Type.GetType(IM yObject).GetPro perties();
}

But I can't find the code to do it (unless I use a string - but then
that's not type safe).

Anyone have any ideas?

Most grateful.

[Joanna Carter [TeamB]]

Re: Relection on interfaces

<jupitermoonbea m@googlemail.co ma écrit dans le message de news:
1158924965.3166 76.274410@d34g2 00...legr oups.com...

| So what I'm trying to do is this instead:
| void Reflect(IMyObje ct objectToReflect )
| {
| PropertyInfo[] myObjectPropert ies =
| Type.GetType(IM yObject).GetPro perties();
| }

Try this :

void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies = typeof(IMyObjec t).GetPropertie s();
}

Joanna

--
Joanna Carter [TeamB]
Consultant Software Engineer

[Jon Skeet [C# MVP]]

Re: Relection on interfaces

jupitermoonbeam @googlemail.com <jupitermoonbea m@googlemail.co mwrote:

I wondered if anyone could help. I wish to retrieve the PropertyInfo[]
of a specific interface but can't work out how to do this in a type
safe way.
>
Basically I don't want to do this:
void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies =
objectToReflect .GetType().GetP roperties();
}
>
Reason being it may have multiple interfaces or it's own properties and
the reflection is based on the object not on the parameter type (i.e.
GetType() returns will return object type which inherits the interface
not the interface itself).
>
So what I'm trying to do is this instead:
void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies =
Type.GetType(IM yObject).GetPro perties();
}
>
But I can't find the code to do it (unless I use a string - but then
that's not type safe).

I think what you're after is:

void Reflect (Type interfaceType, object targetObject)
{
PropertyInfo[] properties = interfaceType.G etProperties();
// use properties with targetObject
}

Then you'd use it with:

Reflect (typeof(IMyObje ct), myObject)

--
Jon Skeet - <skeet@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

[jupitermoonbeam@googlemail.com]

Re: Relection on interfaces

Thanks very much.

I know it sounds stupid but I had one of those typical developer "I
swear I tried that and it didn't work". Not sure how I missed it but
thanks for the help!

Joanna Carter [TeamB] wrote:

<jupitermoonbea m@googlemail.co ma écrit dans le message de news:
1158924965.3166 76.274410@d34g2 00...legr oups.com...
>
| So what I'm trying to do is this instead:
| void Reflect(IMyObje ct objectToReflect )
| {
| PropertyInfo[] myObjectPropert ies =
| Type.GetType(IM yObject).GetPro perties();
| }
>
Try this :
>
void Reflect(IMyObje ct objectToReflect )
{
PropertyInfo[] myObjectPropert ies = typeof(IMyObjec t).GetPropertie s();
}
>
Joanna

--
Joanna Carter [TeamB]
Consultant Software Engineer

[Joanna Carter [TeamB]]

Re: Relection on interfaces

<jupitermoonbea m@googlemail.co ma écrit dans le message de news:
1159267753.2991 47.190650@b28g2 00...legr oups.com...

I know it sounds stupid but I had one of those typical developer "I
swear I tried that and it didn't work". Not sure how I missed it but
thanks for the help!

No problem, I've just about printed the tee-shirt on that one :-)

Joanna

--
Joanna Carter [TeamB]
Consultant Software Engineer