然后调用方法将基类放在ArrayList中 [英] Call methods then base Class in ArrayList

问题描述

需要帮助，我有这样的消息来源：

Need help, I have this sources:

public MainDB : List<string>
{
List<string> X;
List<string> Y;
public MainDB()
{
X = new List<string>();
Y = new List<string>();
...??? A ???... //suppose base = new List<string>(); but doesnt works
}
public ...?? B ??... void Add(string Value) //Maybe void abstract or just void or anything, to avoid the conflicts between the base's List method and current method
{
X.Add(Value);
Y.Add(Value);
...??? C ???... //suppose base.Add(Value); but doesnt works
}
}

任何人都知道如何解决A，B，和C？ A，B和C是基数列表< string>我不知道如何...另外，A假设是这样的，但它不起作用：

Anyone know how to solve the A, B, and C? A, B, and C are the base's List<string> I dont know how... Plus, the A suppose to be like this, but it doesnt work :

base = new List<string>();

这里有一些例子：

Here some example:

MainDB test = new MainDB();
test.Add("hi");
test.Add("hello");
Console.WriteLine(test.X[0].ToString());
Console.WriteLine(test.Y[0].ToString());
Console.WriteLine(test[0].ToString());
Console.WriteLine(test.X[1].ToString());
Console.WriteLine(test.Y[1].ToString());
Console.WriteLine(test[1].ToString());

结果将是：

So the result will be:

hi
hi
hi
hello
hello
hello

推荐答案

不完全确定你在这里问的是什么，除了你正在扩展

Not totally sure what you are asking here, except that you are extending the

List<string>

类，并希望基本上有3个列表。



我想如果这将用于其他应用程序你应该扩展

class and want to basically have 3 lists in one.

I think if this is going to be used in other applications you should extend the

List<T>

类来支持泛型类型。

class to support generic types.

public MainDB : List<string>
{
    private List<string> m_X;
    private List<string> m_Y;

    // Should have these properties and make the fields private
    public List<string> X {
        get {
            return m_X;
        }
    }
    public List<string> Y {
        get {
            return m_Y;
        }
    }

    /* By calling this constructor, technically the base constructor is already called. If you want to show it being called add the base() call after MainDB() like so*/
    public MainDB():base()
    {
        m_X = new List<string>();
        m_Y = new List<string>();
    }

    /* The List<t> and equally List<string> does not support overriding Add so you must specify the new keyword to essentially hide the base Add.*/
    public new void Add(string Value) 
    {
        m_X.Add(Value);
        m_Y.Add(Value);
        base.Add(Value);
    }
}

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