error CS0738 Interface implementation

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C#

MEF

Hi all,

I have the following interface:

public delegate void NotifyOnModulesAvailabilityHandler(Lazy[] modules);

public interface IModulesLoader
{
    event NotifyOnModulesAvailabilityHandler NotifyOnModulesAvailability;

    Lazy<UserControl, IModuleMetadata>[] Modules { get; set; }

    void OnImportsSatisfied();
}

I'm tring to implement this interface like this:

public class ModulesLoader : IModulesLoader, IPartImportsSatisfiedNotification
{
    #region Events

    public event NotifyOnModulesAvailabilityHandler NotifyOnModulesAvailability;

    #endregion

    #region Public Contructor

    public ModulesLoader()
    {
        DeploymentCatalogService.Instance.Initialize();

        CompositionInitializer.SatisfyImports(this);

        this.LoadModules();
    }

    #endregion

    #region Properties

    [ImportMany(AllowRecomposition = true)]
    public Lazy<UserControl, IModuleMetadata>[] Modules
    {
        get;
        set;
    }

    #endregion

    #region IPartImportsSatisfiedNotification Members

    public void OnImportsSatisfied()
    {
        var handler = this.NotifyOnModulesAvailability;
        if (handler != null)
        {
            handler(this.Modules);
        }
    }

    #endregion

    #region Private Methods
private void LoadModules()
{
    var wc = new WebClient();
    wc.OpenReadCompleted += (s, e) =>
    {
        var streamInfo = e.Result;
        var xElement = XElement.Load(streamInfo);
        var modulesList = from m in xElement.Elements("ModuleInfo")
                          select m;
        if (modulesList.Any())
        {
            foreach (var module in modulesList)
            {
                var moduleName = module.Attribute("XapFilename").Value;
                DeploymentCatalogService.Instance.AddXap(moduleName);
            }
        }
    };
    wc.OpenReadAsync(new Uri("ModulesCatalog.xml", UriKind.Relative));
}
#endregion

}

This is my IModuleMetadata:

namespace TunisiaMeeting.MefBase.Interfaces 
{ 
public interface IModuleMetadata 
{ 
string XapFilename { get; } 
string NavigateUri { get; set; } 
string Title { get; } 
int Position { get; } 
} 
}

and UserControl is System.Windows.Controls.UserControl They Both refer to the same namespace, I have only one copy of each type

I get the following error:
Error 1 'TunisiaMeeting.Extensibility.Shell.Helpers.Deployment.ModulesLoader' does not implement interface member 'TunisiaMeeting.MefBase.Interfaces.IModulesLoader.Modules'. 'TunisiaMeeting.Extensibility.Shell.Helpers.Deployment.ModulesLoader.Modules' cannot implement 'TunisiaMeeting.MefBase.Interfaces.IModulesLoader.Modules' because it does not have the matching return type of 'System.Lazy``2<System.Windows.Controls.UserControl,TunisiaMeeting.MefBase.Interfaces.IModuleMetadata>[]'. C:\Imed\TunisiaMeeting\TunisiaMeeting.Extensibility.Shell\Helpers\Deployment\ModulesLoader.cs 18 18 TunisiaMeeting.Extensibility.Shell

m pretty sure I have the same return Type Lazy<UserControl, IModuleMetadata>[] in both my class and my interface for my property.
Any Help please ?
Thank you all

[edit]Code blocks added to make reading the code easier... - OriginalGriff[/edit]