FxCop CA2227 warning and ReadOnlyCollection<T>
- by brickner
In my VS2008 SP1, .NET 3.5 SP1 project, I have different classes that contain different properties.
I use C#3.0 auto properties a lot.
Some of these properties need to be collections. Since I want to make it simple, I use ReadOnlyCollection<T for these properties.
I don't want to use IEnumerable<T since I want random access to the elements.
I use Code Analysis (FxCop rules) and I get the CA2227 warning.
I don't understand why does ReadOnlyCollection<T should have a set method while it can't be changed... The set method can only do exactly what the property can do.
Example:
using System.Collections.ObjectModel;
namespace CA2227
{
public class MyClass
{
public ReadOnlyCollection<int> SomeNumbers { get; set; }
}
}
CA2227 : Microsoft.Usage : Change 'MyClass.SomeNumbers' to be read-only by removing the property setter. C:\Users...\Visual Studio 2008\Projects\CA2227\MyClass.cs 7 CA2227
