C#

public interface IVideoPlayer : IMediaPlayer<IVideo>, IAudio
{

}

Ambiguity between 'IMediaPlayer<IVideo>.Media' and 'IMediaPlayer<IAudio>.Media'

public interface _IMedia { }

public interface _IAudio : _IMedia { }

public interface _IVideo : _IAudio { }

public class CMedia : _IVideo
{
}

public interface _IMediaPlayer
{
    _IMedia Media { get; }
}
public interface _IAudioPlayer : _IMediaPlayer
{
    new _IAudio Media { get; }
}
public interface _IVideoPlayer : _IAudioPlayer
{
    new _IVideo Media { get; }
}

public class _CMediaPlayer : _IMediaPlayer
{
    private CMedia m_Media = new CMedia();

    public _IMedia Media { get { return m_Media; } }
}

public class _CAudioPlayer : _CMediaPlayer, _IAudioPlayer
{
    public new _IAudio Media { get { return base.Media as _IAudio; } }
}

public class CVideoPlayer : _CAudioPlayer, _IVideoPlayer
{
    public new _IVideo Media { get { return base.Media as _IVideo; } }
}

public interface IMedia
{
}
public interface IAudio : IMedia
{
}
public interface IVideo : IAudio
{
}

public interface IMediaPlayer<T> where T : IMedia
{
    T Media
    {
        get;
    }
}

public interface IAudioPlayer<T> : IMediaPlayer<T> where T : IAudio
{
    // Media is IAudio
}

public interface IVideoPlayer<T> : IAudioPlayer<T> where T : IVideo
{
    // Media must be IVideo!
}

public class Class1
{
    public void Example()
    {
        IVideoPlayer<IVideo> videoPlayer = null;
        // not possible:
        //IVideoPlayer<IAudio> videoPlayerPlayingAudio = null;
        IAudioPlayer<IAudio> audioPlayer = null;
    }
}

gastonbed wrote:

Thanks in advance!

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

Alan Balkany wrote:

It doesn't always reflect the true complexity.

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

public void SubMenu(ToolStripMenuItem menuitem, string submenu)
{
    string get_subcatagory = "select * from medicine_subcatagory where Cat_ID=(select Cat_ID from medicine_catagory where Med_Cat='" + allopathicToolStripMenuItem.Text + "')";
    DataTable dt = d.getdata(get_subcatagory);
    
    foreach (DataRow dr in dt.Rows)
    {
        ToolStripMenuItem ssmenu = new ToolStripMenuItem(dr["Med_Sub"].ToString(),null, new EventHandler(ChildClick));
        if (menuitem.DropDownItems.Contains(menuitem.DropDownItems[dr["Med_Sub"].ToString()]))
        {
            menuitem.DropDownItems.Remove(ssmenu);
        }
        else
        {
            menuitem.DropDownItems.Add(ssmenu);
        }
    }
}