这是我在C#的问题:

我有以下类:

public class Entity {
    public int Number { get; set; }
// Other methods, constructor etc, not relevant to this question.
}
public class Manager {
    private Foo() {
        Entity entity = new Entity();
        entity.Number = 1;
    }
}

在entity.Number = 1行，我得到以下编译时错误:

 'Entity' does not contain a definition for 'Number' and no extension method 'Number accepting a first argument of type 'Entity' could be found (are you missing a directive or an assembly reference?)

如何解决此错误?看起来我绝对可以访问Number属性。我也试过用非自动属性的方式。(也就是说，我写了一个私有的backer变量，自己写了get和set)。

编辑

一些有用的海报告诉我，我没有提供足够的信息。
我很抱歉，这是我第一次在StackOverflow或类似的网站上发帖。有关相关代码的更完整图片，请参阅下文。

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using SharedContent;
namespace Glow
{
    public class GlowGame : Microsoft.Xna.Framework.Game
    {
        // Viewport and graphics variables
        GraphicsDeviceManager graphics;
        public GlowGame()
        {
            graphics = new GraphicsDeviceManager(this);
            Content.RootDirectory = "Content";
            Entity entity = new Entity(Content);
            // Error occurs in line below!
            entity.Number = 1;
        }
        
        // Standard game template methods here:  Initialize, LoadContent, Update,
        // Draw, etc.
    }
}
in a separate file named Entity.

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
namespace SharedContent
{
    public class Entity
    {
        public int Number { get; set; }
        public Entity(ContentManager content) { }
    }
}

确切的错误信息:

'SharedContent.Entity' does not contain a definition for 'Number' and no extension method 'Number' accepting a first argument of type 'SharedContent.Entity' could be found (are you missing a using directive or an assembly reference?)

另一个注意事项，我已经检查并重新检查了Entity实际上指向正确的代码，而不是其他一些Entity。

再次感谢您的帮助!