c# asp.net 多數組索引的解決方法

2023-05-09 18:58:31

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來源：轉載

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本人今天做了一個功能需要在一個類里用多個數組，

數組需要索引器來調用一個數組

我查了msdn 一個類里面只能有一個this 索引器

那這么多數組如何構造索引呢

我在壇子里找到了解決之道

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using System;

namespace TestUse
{
    /// <summary>
    /// Summary description for Muliti.
    /// </summary>
    public class Muliti
    {
        public Muliti()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        private string[] test1;
        private object[] test2;
        private int[]    test3;

        public object this[string arrname,int index]{
            get{
                switch(arrname){
                    case "test1":return test1[index];
                    case "test2":return test2[index];
                    case "test3":return test3[index];
                    default:return null;
                }
            }
            set{
                switch(arrname)
                {
                    case "test1":test1[index]=value.ToString();break;
                    case "test2":test2[index]=value;break;
                    case "test3":test3[index]=(int)value;break;
                    default:break;
                }
            }
        }

        public void setUpArray(){
            test1 = new string[3];
            test2 = new object[2];
            test3 = new int[4];
        }
    }
}
using System;

namespace TestUse
{
    /// <summary>
    /// Summary description for Muliti.
    /// </summary>
    public class Muliti
    {
        public Muliti()
        {
            //
            // TODO: Add constructor logic here
            //
        }

        private string[] test1;
        private object[] test2;
        private int[]    test3;

        public object this[string arrname,int index]{
            get{
                switch(arrname){
                    case "test1":return test1[index];
                    case "test2":return test2[index];
                    case "test3":return test3[index];
                    default:return null;
                }
            }
            set{
                switch(arrname)
                {
                    case "test1":test1[index]=value.ToString();break;
                    case "test2":test2[index]=value;break;
                    case "test3":test3[index]=(int)value;break;
                    default:break;
                }
            }
        }

        public void setUpArray(){
            test1 = new string[3];
            test2 = new object[2];
            test3 = new int[4];
        }
    }
}

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private void button1_Click(object sender, System.EventArgs e)
{
      Muliti testm = new Muliti();
      testm.setUpArray();
      testm["test1",0]="test1-0";
      testm["test2",0]= "test2-0";
      testm["test3",0]= 3;
      MessageBox.Show((string)testm["test1",0]);
      MessageBox.Show((string)testm["test2",0]);
      MessageBox.Show("" + testm["test3",0]);
}
      private void button1_Click(object sender, System.EventArgs e)
        {
            Muliti testm = new Muliti();
            testm.setUpArray();
            testm["test1",0]="test1-0";
            testm["test2",0]= "test2-0";
            testm["test3",0]= 3;
            MessageBox.Show((string)testm["test1",0]);
            MessageBox.Show((string)testm["test2",0]);
            MessageBox.Show("" + testm["test3",0]);
        }