Questions tagged [attributeusage]
10 questions
18
votes
5 answers
Why would one want to use AttributeUsage AllowMultiple when creating attributes?
According to a book I'm reading, the AllowMultiple public property of AttributeUsage specifies:
...whether the target can have multiple instances of the attribute applied to it.
Why would I want/not want to use this?
Scott Davies
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9
votes
3 answers
C# AttributeUsage for Specific Class
Is it possible to have something like AttributeUsage to restrict the use of an attribute to a specific class (not just AttributeTargets.Class - that would be any class)?
Alex
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8
votes
1 answer
Why does F# not allow multiple attributes where C# does?
The following code compiles in C#:
[ContentType("text")]
[ContentType("projection")]
public class Class1
{
}
The following code in F# does not compile:
[]
[]
type Class1() = class end
The compile…
Johan
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5
votes
1 answer
C#: AttributeUsage behaving strange on inherited Attributes - Is this intended behaviour?
I'm working with custom attributes, which again have a common base class. The AttributeUsage attribute is declared on the base attribute class, not on the concrete attribute classes.
My attribute usage on the base class says
AttributeTargets.Class,…
antifish
- 51
- 1
4
votes
2 answers
Client-side validation for custom ValidationAttribute with AttributeTargets.Class
Is it possible to implement client-site validation for custom ValidationAttribute, which is used in Class scope? For example my MaxLengthGlobal, which should assure global max limit for all input…
Jozef Mera
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4
votes
1 answer
Custom Attribute - Set Attribute Usage for Only Private Members
I creating a custom attribute and I would like to the set the AttributeUsage (or maybe some other attribute in the attribute class) so that I my attribute can only be used in private methods, is that possible?
Thanks in advance for the answers!
Hugo
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1
vote
2 answers
Get attribute information from inheriting class, inside static function
I have a situation where I need to get the value on a property on an attribute (decorator) applied to a class. That class that is decorated, is inheriting from an abstract class. It is this abstract class that needs to get the attribute information,…
pnizzle
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1
vote
1 answer
How to create attribute with class restrictions
In C# there is a attribute called AttributeUsage, if you want to set this attribute to a class it automatically detects if the class is derived from the Attribute class and if not it will throw an error.
How can I create such restrictions?
I want to…
Robert Wolf
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1
vote
2 answers
Attribute help with Routing, compiler error
I have created a custom attribute called RouteAttribute:
[AttributeUsage(AttributeTargets.Property)]
public class RouteAttribute : Attribute
{
public string Url { get; set; }
public bool CheckPhysicalUrlAccess { get; set; }
public…
jaekie
- 2,283
- 4
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- 52
1
vote
1 answer
Creating custom attributes for methods that has specific signature
I created simple class has AttributeUsage attribute. When I tried to build I got error:
Attribute 'AttributeUsage' is only valid on classes derived from System.Attribute.
Then I made my class inherits from Attribute and everything is fine.
If I…
Dilshod
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