Atribute inside class

  • Thread starter Thread starter Charles Bazi
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C

Charles Bazi

Hi, I have a class with custom attributes.

Aka [MyAttribute( "Joe")]

I try to get value of my attribute, but inside the class where it's
declared with this piece of code:

string _ClassType = string.Empty;

Type _object = Type.GetType( this.GetType().ToString() );

object[] _AttributeMine = _object.GetCustomAttributes( typeof(
MyAttribute ), true );

if(_AttributeMine.Length == 1) {
_ClassType = ( _AttributeMine[0] as MyAttribute ).Name;
}

After debugging, I see _object being assigned with my class'type,
AttributeMine is null after trying to load it with :
_object.GetCustomAttributes( typeof( MyAttribute ), true );

Is this a normal behaviour ?

Thank you
 
Charles Bazi said:
Hi, I have a class with custom attributes.

Aka [MyAttribute( "Joe")]

I try to get value of my attribute, but inside the class where it's
declared with this piece of code:

string _ClassType = string.Empty;

Type _object = Type.GetType( this.GetType().ToString() );
Click to expand...

Um, what's the point of converting the type to a string and back again?
It's equivalent to

Type _object = GetType();

but somewhat less reliable (depending on whether the type of "this" is
declared in the currently executing assembly - that may not be the case
with inheritance involved).
object[] _AttributeMine = _object.GetCustomAttributes( typeof(
MyAttribute ), true );

if(_AttributeMine.Length == 1) {
_ClassType = ( _AttributeMine[0] as MyAttribute ).Name;
}

After debugging, I see _object being assigned with my class'type,
AttributeMine is null after trying to load it with :
_object.GetCustomAttributes( typeof( MyAttribute ), true );

Is this a normal behaviour ?
Click to expand...

Well, you haven't shown us the code for MyAttribute or how you've used
it.

Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.
 
Jon said:
Charles Bazi said:
Hi, I have a class with custom attributes.

Aka [MyAttribute( "Joe")]

I try to get value of my attribute, but inside the class where it's
declared with this piece of code:

string _ClassType = string.Empty;

Type _object = Type.GetType( this.GetType().ToString() );
Click to expand...

Um, what's the point of converting the type to a string and back again?
It's equivalent to

Type _object = GetType();
Click to expand...

Yes :|
but somewhat less reliable (depending on whether the type of "this" is
declared in the currently executing assembly - that may not be the case
with inheritance involved).
object[] _AttributeMine = _object.GetCustomAttributes( typeof(
MyAttribute ), true );

if(_AttributeMine.Length == 1) {
_ClassType = ( _AttributeMine[0] as MyAttribute ).Name;
}

After debugging, I see _object being assigned with my class'type,
AttributeMine is null after trying to load it with :
_object.GetCustomAttributes( typeof( MyAttribute ), true );

Is this a normal behaviour ?
Click to expand...

Well, you haven't shown us the code for MyAttribute or how you've used
it.
Click to expand...

MyAttribute's only purpose is to hold the value of Name, and I have this
code working, when used outside the class
Could you post a short but complete program which demonstrates the
problem?
Click to expand...

There is no more program, just need to get the value of the attribute
inside the class. I want to do it this way for mantainabilty issues...

Thank you.
See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.
Click to expand...

OK
 
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