[Mono-dev] Compiling a C# project with Xamarin Studio + MonoRuntime does not work.

[Vardar Sahin]

Thanks for that hint but I do not see some thing like this in my project.


2014-04-20 18:49 GMT+02:00 Mackey Kinard <Mackey at ehsiplus.com>:

> Your cs1685 error is because your are duplicating the definition of the
> compiler services class.
> This mainly happens when you are making extension to classes. If your are
> targeting .net
> 3.5 or higher the extension attribute is define in mono... In previous
> versions ... Like .net
> 2.0 you had to define the attribute yourself...
>
> So probably when you made library of code that required you to define
> extension attribute that
> Was .net 2.0... But you are using that library in a .net 3.5 or greater
> project which already has
> Extention attribute defined...
>
> I usually make a separate dll with the extension attribute as the only
> class... Then in my .net
> 2.0 projects (that I keep 2.0 to maintain compatible usage of my library
> for all versions) I reference this dll with the extension attribute...
> Otherwise, no need to define the extension attribute at all (for new .net
> projects)
>
> Sent from my iPad
>
> On Apr 20, 2014, at 6:23 AM, Vardar Sahin <sakirsoft at gmail.com> wrote:
>
> Hi Guys,
>
> I have a C# project which compiles just fine with Visual Studio. It also
> compiles when I use Xamarin Studio and the .Net runtime. But when I choose
> to use the MonoRuntime it does not compile anymore.
>
> I am using the current version of Xamarin Studio ( 4.2.3 ). Interesting is
> that when I use an older Version of Xamarin Studio ( 4.1.9 ) + MonoRuntime
> it works.
>
> I am on Windows and use the latest stable version of mono ( 3.2.3 ).
>
> The compiler error I get is the following.
>
> *Error CS0433: The imported type `System.Action<T1,T2>' is defined
> multiple times (CS0433) *
>
>  Also I have a Warning like this
>
> *Warning CS1685: The predefined type
> `System.Runtime.CompilerServices.ExtensionAttribute' is defined multiple
> times. Using definition from `mscorlib.dll' (CS1685) *
>
> The signature of the function where the error occurs is this.
>
> *private void ApplyCollision(ulong goId, CollisionData data,
> Action<ICollisionListener, Collision> func)*
>
>
> Any ideas how to fix this?
>
> Best
> Sahin
>
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