c# - MyListへの参照を取得することは可能ですか

Question

I have some lists of the type ObservableCollection<SampleObject>
They all end with a letter of the alphabet: lista, listb, listc...
Now i want to make a loop which runs through the alphabet and at every letter it should add an item to the current list.

Example:

for (char i = 'a'; i < 'z'; i++)  
{  
    string name = "list" + i;
    name.Add(.....);
}

The "name" in this example should be the list where i want to add an item.

score 5 · Accepted Answer

Dictionary<char, ObservableCollection<SampleObject>>それぞれに異なるコレクションを持つが必要ですchar。

score 0 · Accepted Answer

リストがクラスレベルで宣言されている場合は、リフレクションを使用してそれらへの参照を取得できます (辞書の方が適切だと思います)。

簡単な例:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private List<string> lista = new List<string>();

    private void button1_Click(object sender, EventArgs e)
    {
        Console.WriteLine("Before:");
        foreach (string value in lista)
        {
            Console.WriteLine(value);
        }

        for (char i = 'a'; i < 'z'; i++)  
        {  
            string name = "list" + i;
            System.Reflection.FieldInfo fi = this.GetType().GetField(name, System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Public);
            if (fi != null && fi.FieldType.Equals(typeof(List<string>)))
            {
                List<string> referenceToList = (List<string>)fi.GetValue(this);
                referenceToList.Add("Hello!");
            }
        }

        Console.WriteLine("After:");
        foreach (string value in lista)
        {
            Console.WriteLine(value);
        }
    }
}

2 に答える 2

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