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   源码介绍

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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();
        }
    }
}