C#ListBox中的Item拖拽

C#ListBox中的Item拖拽，实现多选移动

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Collections;namespace MoveItem{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } ArrayList list = new ArrayList(); private void listBox1_SelectedIndexChanged(object sender, EventArgs e) { } private void Form1_Load(object sender, EventArgs e) { for (int i = 1; i <= 10; i ) { list.Add(i); string s = i.ToString(); listBox1.Items.Add(s); } } private void listBox2_SelectedIndexChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { //单选，无法实现多选 //string str = this.listBox1.Text.Trim().ToString(); //if (listBox1.Items.Contains(str)) //{ // listBox1.Items.Remove(str); // listBox2.Items.Add(str); //} for (int i=0;i<listBox1.SelectedIndices.Count;i ) { listBox2.Items.Add(listBox1.Items[listBox1.SelectedIndices[i]]); listBox1.Items.RemoveAt(listBox1.SelectedIndices[i]); i--; } } private void button2_Click(object sender, EventArgs e) { for (int i = 0; i < listBox2.SelectedIndices.Count; i ) { listBox1.Items.Add(listBox2.Items[listBox2.SelectedIndices[i]]); listBox2.Items.RemoveAt(listBox2.SelectedIndices[i]); i--; } } private void button3_Click(object sender, EventArgs e) { listBox2.Items.AddRange(listBox1.Items); listBox1.Items.Clear(); } private void button4_Click(object sender, EventArgs e) { listBox1.Items.AddRange(listBox2.Items); listBox2.Items.Clear(); } }}