测试listBox1.Items.Remove方法是利用ToString还是利用gethashCode来定位元素的
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace testCombox { public partial class Form1 : Form { test t1 = new test("t1", 1); test t2 = new test("t2", 2); test t3 = new test("t3", 3); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } private void btnAdd_Click(object sender, EventArgs e) { this.listBox1.Items.Add(t1); this.listBox1.Items.Add(t2); this.listBox1.Items.Add(t3); } /// <summary> /// 判断根据Object是否能够删除t2 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btnDel_Click(object sender, EventArgs e) { this.listBox1.Items.Remove(t2);//删除成功,下面测试listBox1.Items.Remove //方法是利用ToString还是利用gethashCode来定位元素的 } /// <summary> /// 判断listBox1.Items.Remove(object)是不是根据Object的Tostring方法来删除元素的 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void button1_Click(object sender, EventArgs e) { t2.Name = "t22"; //修改元素的名称,看是否能够被删除。 this.listBox1.Items.Remove(t2);//删除成功,证明Remove方法可能是根据getHashCode来删除元素的 } } /// <summary> /// 一个测试类 /// </summary> public class test { public string Name { get; set; } public override string ToString() { return this.Name; } public int testInt = 0; public test(string name, int num) { this.Name = name; testInt = num; } } }
作者:kissazi2
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