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ListBox显示最新数据、左移和右移操作

news 2025/7/28 7:10:39

1、程序

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.ProgressBar;namespace ListBoxApp
{public partial class Form1 : Form{Timer timer;bool isRun = false;int count = 0;int MAX_COUNT = 20;string filename = "";/// <summary>/// 构造函数/// </summary>public Form1(){InitializeComponent();MoveInitialize();}/// <summary>/// 窗体加载/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Form1_Load(object sender, EventArgs e){timer = new Timer();timer.Interval = 500;timer.Tick += Timer_Tick;timer.Start();}/// <summary>/// 定时处理/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void Timer_Tick(object sender, EventArgs e){if (isRun){string str = $"No. {count} item";ListBoxSaveAndAdd(filename,listBox1, str, MAX_COUNT);count++;}}/// <summary>/// 测试开启和停止/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btStart_Click(object sender, EventArgs e){if (btStart.Text.Equals("开始")){btStart.Text = "停止";listBox1.Items.Clear();filename = Path.Combine(Environment.CurrentDirectory, "f"+DateTime.Now.ToString("yyyyMMdd_HHmmssFFF")+".txt");count = 0;isRun = true;}else{btStart.Text = "开始";isRun = false;}}#region 显示（最新数据）和保存/// <summary>/// 数据保存和ListBox添加/// </summary>/// <param name="filename"></param>/// <param name="listBox"></param>/// <param name="text"></param>/// <param name="maxCount"></param>public static void ListBoxSaveAndAdd(string filename, ListBox listBox, string text, int maxCount){FileStreamWriter(filename, text);ListBoxScrollAddCross(listBox, text, maxCount);}/// <summary>/// 文件保存/// </summary>/// <param name="filename"></param>/// <param name="content"></param>public static void FileStreamWriter(string filename, string content){using (StreamWriter sw = new StreamWriter(filename, true)){sw.WriteLine(content);}}/// <summary>/// listBox跨域处理/// </summary>/// <param name="listBox"></param>/// <param name="text"></param>/// <param name="maxCount"></param>public static void ListBoxScrollAddCross(ListBox listBox, string text, int maxCount){if (listBox.InvokeRequired){MethodInvoker mi = delegate (){ListBoxScrollAdd(listBox, text, maxCount);};listBox.Invoke(mi);}else{ListBoxScrollAdd(listBox, text, maxCount);}}/// <summary>/// listBox添加/// </summary>/// <param name="listBox"></param>/// <param name="text"></param>/// <param name="maxCount"></param>public static void ListBoxScrollAdd(ListBox listBox, string text, int maxCount){listBox.Items.Add(text);if (listBox.Items.Count > maxCount){listBox.Items.RemoveAt(0);}listBox.TopIndex = listBox.Items.Count - (int)(listBox.Height / listBox.ItemHeight);}#endregion#region 左移和右移/// <summary>/// 移动初始化/// </summary>private void MoveInitialize(){listBox2.Items.Add("产品设计");listBox2.Items.Add("硬件设计");listBox2.Items.Add("逻辑设计");listBox2.Items.Add("软件设计");}/// <summary>/// 右移/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void BtnAddProject_Click(object sender, EventArgs e){if (listBox2.Items.Count > 0){CurrentMove(listBox2, listBox3);}}/// <summary>/// 左移/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void BtnRemoveProject_Click(object sender, EventArgs e){if (listBox3.Items.Count > 0){CurrentMove(listBox3, listBox2);}     }/// <summary>/// 移动处理/// </summary>/// <param name="source"></param>/// <param name="target"></param>public void CurrentMove(ListBox source,ListBox target){foreach(var selectItem in source.SelectedItems){target.Items.Add((string)selectItem);}List<int> list = new List<int>();foreach(int item in source.SelectedIndices){list.Add(item);}for(int i=list.Count-1; i>=0; i--){source.Items.RemoveAt(list[i]);}}#endregion}
}