custom-attributes

问题 Writing custom code to create product detail page with wordpress database. I have displayed product title, desc, price, stock, etc and got stuck up with product attributes. In the database, _product_attributes is stored in serialized manner in wp_postmeta table in database. And i couldn't unserailize attributes from it. But i found, each attribute value with it own price has been stored in wp_postmeta in some other post_id. for example, product with post_id=55 has attribute name 'Size value'

问题 In other words could it be possible to create assembly, which does not even compile (assuming the checking code is not removed ) if each one of the Classes does not have ( "must have" ) custom attributes ( for example Author and Version ) ? Here is the code I have used for querying during run time : using System; using System.Reflection; using System.Collections.Generic; namespace ForceMetaAttributes { [System.AttributeUsage ( System.AttributeTargets.Method, AllowMultiple = true )] class

问题 This question already has answers here : Allow a custom Attribute only on specific type (4 answers) Closed 6 years ago . I've created a few attributes for properties. now I want to limit these attributes to properties with a certain data type? the idea is, a compiler error will be thrown if it is assign to a different type. is this possible? if not, then I guess i'll have to check it on runtime. 回答1: You could write a custom FxCop/ Code Analysis rule to check for this. FxCop is integrated in

问题 This question already has answers here : Allow a custom Attribute only on specific type (4 answers) Closed 6 years ago . I've created a few attributes for properties. now I want to limit these attributes to properties with a certain data type? the idea is, a compiler error will be thrown if it is assign to a different type. is this possible? if not, then I guess i'll have to check it on runtime. 回答1: You could write a custom FxCop/ Code Analysis rule to check for this. FxCop is integrated in

问题 I have some logging code that was written to intercept method calls using ContextBoundObject s and a ContextAttribute. The code is based on a Code Project sample. This all worked fine until we started using this library with code that leverages async and await. Now we get remoting errors when running the code. Here is a simple example that reproduces the issue: public class OhMyAttribute : ContextAttribute { public OhMyAttribute() : base("OhMy") { } } [OhMy] public class Class1 :

问题 I'm thinking of a way to reduce the amount of javascript code by enabling ajax on links from attributes. Example: <a href="/Default/Link.html" data-endpoint="/Ajax/Link.html" rel="targetId" async="true">Click me!</a> async="true" will disable default behaviour of the link ( href ), and do a ajax call using the data-endpoint value and insert it to the element id defined in rel . I'm no JS expert, so I'd appreciate any thoughts or pitfalls using this approach. Options like cache: true etc would

问题 I understand that according to the HTML specification, it's invalid to add custom attributes to elements. Is this also invalid with XHTML? I thought XHTML was part of the XML family, and as such was extensible. Being extensible, isn't it ok to use custom attributes? Dave 回答1: custom attributes won't be considered valid by the standard W3C validators. You can define your own document type definition (DTD) though. See http://www.alistapart.com/articles/customdtd/ for more information about that

问题 html5 supports the placeholder attribute on input[type=text] elements, but I need to handle non-compliant browsers. I know there are a thousand plugins out there for placeholder but I'd like to create the 1001st. I am able to get a handle on the input[placeholder] element but trying to get the value of the placeholder attribute is returning undefined - $("input[placeholder]").attr("placeholder") . I'm using jquery 1.6.2. Here is the jsfiddle. I modified the code to work in a browser that is

问题 Is there any way to add custom attributes to properties in EF generated code? The only thing I can see as a plausible solution would be to come up with a custom T4 template. However, because of the nature of the attribute it would be impossible to determine the correct attribute parameter per EF property. 回答1: You can do this by specifying a metadata type that mirrors the properties and is used simply for attribution. [MetadataType(typeof(Dinner_Validation))] public partial class Dinner {}

问题 Is there an elegant way to get all the types in an assembly that have a custom attribute? So if I have a class [Findable] public class MyFindableClass {} I would like to be able to find it in a collection of types returned by Assembly.GetTypes(...) I can do it with a big vile hack, but I'm sure someone has a nicer way. 回答1: I wouldn't think you can dodge enumerating every type in the assembly, checking for the attribute, but you could use LINQ to make the query easier to understand: Assembly