错误：类型名称“实例”不存在 [英] Error: the type name "instance" does not exist

问题描述

我想我的代码中出现了幻影问题。我在类库项目中有一个名为 RedCupSkinManager 的类。我为这堂课创造了一个公共场合。但是，在我的主Windows应用程序项目中，我无法访问该实例。

在我的RedCupSkinManager类中：

  namespace  RedCupSkin 
 {
  public   class  RedCupSkinManager 
 {
  private   static  RedCupSkinManager实例; 
 
  public   static  RedCupSkinManager实例
 {
 < span class =code-keyword> get  { return 实例？ （instance =  new  RedCupSkinManager（））; } 
} 
} 
} 

在我的主要应用程序中：

 使用 RedCupSkin; 
 使用 RedCupSkin.Controls; 
 
 
 命名空间 RedCup 
 {
  public   partial   class  RedCup：RedCupForm 
 {
  private   readonly  RedCupSkinManager redcupSkinManager; 
  public  RedCup（）
 {
 InitializeComponent（）; 
 redcupSkinManager =  new  RedCupSkinManager.Instance; 
} 
} 
} 

在vs-2015或作为我有任何建筑问题class是不是静态的，因此不调用静态函数抛出这个类？

提前致谢。



我尝试过：



我在VS-2015开发。我有Build RedCupSkin作为它的类库，我在我的RedCup Windows应用程序中添加了引用（RedCupSkin.dll）。



但是，我得到例外类型名称实例不存在。

解决方案

试试这个：

  namespace  RedCupSkin 
 {
  public   class  RedCupSkinManager 
 {
  //  私人'ctor for Singleton  
  private  RedCupSkinManager（）
 {
} 
 
  private   static  RedCupSkinManager _instance; 
 
  public   static  RedCupSkinManager实例
 {
 < span class =code-keyword> private   set  {_instance =  value ; } 
 
  get  
 {
  if （_ instance ==  null ）_ instance =  new  RedCupSkinManager（）; 
  return  _instance; 
} 
} 
} 
} 

在表格中：

 私人 RedCupSkinManager redcupSkinManager; 
 
  private   void  YourForm_Load（ object  sender，EventArgs e）
 {
 redcupSkinManager = RedCupSkinManager.Instance; 
} 

我假设你的目标是让'RedCupSkinManager成为单身，就像这里显示的简单示例一样;从相对简单到复杂，有很多方法可以做到这一点。请参阅Jon Skeet的综合评论：[ ^ ]。

你不需要新

 redcupSkinManager = RedCupSkinManager.Instance; 

Hi,
I think I am getting ghosted problem in my code. I have a Class named RedCupSkinManager in Class Library projects. I have created a public instant for this class. But, in my Main Windows Application project I could't access the instance.
In my RedCupSkinManager class:

namespace RedCupSkin
{
    public class RedCupSkinManager
    {
      private static RedCupSkinManager instance;
 
      public static RedCupSkinManager Instance
        {
            get { return instance ?? (instance = new RedCupSkinManager()); }
        }
    }
}

In my Main Application:

using RedCupSkin;
using RedCupSkin.Controls;


namespace RedCup
{
    public partial class RedCup : RedCupForm
    {
        private readonly RedCupSkinManager redcupSkinManager; 
        public RedCup()
        {
            InitializeComponent();
            redcupSkinManager = new RedCupSkinManager.Instance;
        }
    }
}

Is there any building problem in vs-2015 or as my class is not static thus while not calling static function throw this class?
Thanks in advance.

What I have tried:

I am developing in VS-2015. I have Build RedCupSkin as its a class library and I have added the reference(RedCupSkin.dll) in my RedCup Windows application.

But, I am getting exception "the type name "instance" does not exist".

解决方案

Try this:

namespace RedCupSkin
{
    public class RedCupSkinManager
    {
        // private 'ctor for Singleton
        private RedCupSkinManager()
        {    
        }

        private static RedCupSkinManager _instance;

        public static RedCupSkinManager Instance
        {
            private set { _instance = value; }
            
            get
            {
                if(_instance == null) _instance = new RedCupSkinManager();
                return _instance;
            }
        }
    }
}

In the Form:

private RedCupSkinManager redcupSkinManager;

private void YourForm_Load(object sender, EventArgs e)
{
    redcupSkinManager = RedCupSkinManager.Instance;
}

I assume your goal here is to make the 'RedCupSkinManager a "singleton," as in the simple example shown here; there are a number of ways to do that from relatively simple to complex. See Jon Skeet's comprehensive review here: [^].

You don't need the "new"

redcupSkinManager = RedCupSkinManager.Instance;

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