C# 静态字典在抽象类 .NET 2.0 中声明和初始化

Question

我有一个抽象类，想为错误代码添加一个静态字典。我尝试了以下方法:

public abstract class Base
{
   ...
   protected static readonly Dictionary<int, string> errorDescriptions = new Dictionary<int, string>()
   {
      { 1, "Description1"},
      { 2, "Description2"},
      ...
    };
   ...
}

但后来发现这是在.NET 3.0中实现的；我正在使用 2.0.我环顾四周，其他一些人建议我在构造函数中添加对，但这是一个抽象类。

我可以/应该如何填充字典？

谢谢。

Answer 1

public abstract class Base
{
   ...
   protected static readonly Dictionary<int, string> errorDescriptions;
   // Type constructor called when Type is first accessed.
   // This is called before any Static members are called or instances are constructed.
   static Base ()
   {
      errorDescriptions = new Dictionary<int, string>();
      errorDescriptions[1] = "Description1";
      errorDescriptions[2] = "Description2";
   }
}