c# - 用常量文字初始化 ArrayList

Question

下面的ArrayList可以不用aFileExt字符串数组直接初始化吗？

private static string[] aFileExt = 
     {"css", "gif", "htm", "html", "txt", "xml" };
private System.Collections.ArrayList alFileTypes =
     new System.Collections.ArrayList(aFileExt);

下面一行是目标，但我的 .Net 编译器不喜欢它:

private static System.Collections.ArrayList alFileTypes = 
     new System.Collections.ArrayList({"css","gif","htm","html","txt","xml"});

我正在使用 .net Micro Framework，因此无法访问泛型类型。

Answer 1

C# 1 或 2:

private static ArrayList alFileTypes = 
     new ArrayList(new string[] {"css","gif","htm","html","txt","xml"});

C# 3 使用隐式类型数组:

private static ArrayList alFileTypes = 
    new ArrayList(new[] {"css","gif","htm","html","txt","xml"});

C# 3 使用集合初始化器:

private static ArrayList alFileTypes = 
    new ArrayList{"css","gif","htm","html","txt","xml"};

或者创建你自己的辅助方法:

public static ArrayList CreateList(params object[] items)
{
    return new ArrayList(items);
}

然后:

static ArrayList alFileTypes = CreateList("css","gif","htm","html","txt","xml");

顺便说一句，您有什么理由不使用通用集合吗？