Custom Assembly Attributes

Question

I would like to know if I can define custom assembly attributes. Existing attributes are defined in the following way:

[assembly: AssemblyTitle("MyApplication")]   [assembly: AssemblyDescription("This application is a sample application.")]   [assembly: AssemblyCopyright("Copyright © MyCompany 2009")]   

Is there a way I can do the following:

[assembly: MyCustomAssemblyAttribute("Hello World! This is a custom attribute.")] 

Answer 1

Yes you can. We do this kind of thing.

[AttributeUsage(AttributeTargets.Assembly)] public class MyCustomAttribute : Attribute {     string someText;     public MyCustomAttribute() : this(string.Empty) {}     public MyCustomAttribute(string txt) { someText = txt; }     ... } 

To read use this kind of linq stmt.

var attributes = assembly     .GetCustomAttributes(typeof(MyCustomAttribute), false)     .Cast<MyCustomAttribute>(); 

Answer 2

Yes, use AttributeTargets.Assembly:

[AttributeUsage(AttributeTargets.Assembly)] public class AssemblyAttribute : Attribute { ... }