C＃从另一个类访问字典不起作用 [英] C# Accessing a dictionary from another class is not working

问题描述

我对C＃来说很新，并且在过去3天里一直在尝试学习。我很好奇为什么下面的代码不能正常工作？我得到以下错误：对象引用未设置为对象的实例。当我尝试调用data.dOffsets [roomtargets]。但是，调用data.sProcessName是没有任何错误的。

我有两个类/文件。 program.cs：

  class Program 
 {
 public static Data data = new Data（）; 
 
 static void Main（string [] args）
 {
 Console.WriteLine（data.sProcessName：{0}，data.sProcessName）; 
 Console.WriteLine（data.dOffsets [\roomtargets\]：{0}，data.dOffsets [roomtargets]）; 
  

而Data.cs：

  public class Data 
 {
 public string sProcessName {get;组; } 
 public Dictionary< string，int> dOffsets {get;组; } 
 
 public Data（）
 {
 sProcessName =Client; 
 
字典< string，int> dOffsets = new Dictionary< string，int>（）
 {
 {roomtargets，0x0018FA48} 
}; 
} 
} 
  

任何帮助将不胜感激！

解决方案

 字典< string，int> dOffsets = new Dictionary< string，int>（）
 {
 {roomtargets，0x0018FA48} 
}; 
  

此代码将字典初始化为构造函数内的内部变量。更改为：

  dOffsets = new Dictionary< string，int>（）
 {
 { roomtargets，0x0018FA48} 
}; 
  

或 this.dOffsets 清楚。

I'm fairly new to C# and have been trying to learn for the last 3 days. I am curious as to why the below code is not working properly? I get the following error: Object reference not set to an instance of an object. when I try to call data.dOffsets["roomtargets"]. However, calling data.sProcessName does work without any error..

I have two classes/files. The program.cs:

class Program
    {
        public static Data data = new Data();

        static void Main(string[] args)
        {
            Console.WriteLine("data.sProcessName: {0}", data.sProcessName);
            Console.WriteLine("data.dOffsets[\"roomtargets\"]: {0}", data.dOffsets["roomtargets"]);

And the Data.cs:

public class Data
    {
        public string sProcessName { get; set; }
        public Dictionary<string, int> dOffsets { get; set; }

        public Data()
        {
            sProcessName = "Client";

            Dictionary<string, int> dOffsets = new Dictionary<string, int>()
            {
                {"roomtargets", 0x0018FA48}
            };
        }
    }

Any help would be greatly appreciated!

解决方案

        Dictionary<string, int> dOffsets = new Dictionary<string, int>()
        {
            {"roomtargets", 0x0018FA48}
        };

This code initialize a dictionary as an inner variable within the constructor. Change it to:

        dOffsets = new Dictionary<string, int>()
        {
            {"roomtargets", 0x0018FA48}
        };

or this.dOffsets to make it more clear.

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