C＃靜態字典在抽象類中聲明和初始化.NET 2.0

Question

我有一個抽象類，並想爲錯誤代碼添加靜態字典。我嘗試了以下內容：

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

但後來發現這是在.NET 3.0中實現的;我使用2.0。我環顧四周，還有人建議我在構造函數中添加對，但這是一個抽象類。

如何填寫字典？

謝謝。

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"; 
    } 
}