在WinForm中，将ListBox数据保存在窗口，通常意味着在窗口关闭后重新打开时恢复ListBox的数据。可以通过多种方式实现，以下为几种常见的方法。 ### 保存到配置文件（如XML） 下面是一个将ListBox数据保存到XML文件，并在窗口加载时恢复数据的示例： ```csharp using System; using System.IO; using System.Xml.Serialization; using System.Collections.Generic; using System.Windows.Forms; [Serializable] public class ListBoxData { public List<string> Items { get; set; } } public partial class Form1 : Form { private const string filePath = "listboxdata.xml"; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { if (File.Exists(filePath)) { XmlSerializer serializer = new XmlSerializer(typeof(ListBoxData)); using (StreamReader reader = new StreamReader(filePath)) { ListBoxData data = (ListBoxData)serializer.Deserialize(reader); foreach (string item in data.Items) { listBox1.Items.Add(item); } } } } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { ListBoxData data = new ListBoxData(); data.Items = new List<string>(); foreach (object item in listBox1.Items) { data.Items.Add(item.ToString()); } XmlSerializer serializer = new XmlSerializer(typeof(ListBoxData)); using (StreamWriter writer = new StreamWriter(filePath)) { serializer.Serialize(writer, data); } } } ``` ### 保存到数据库 若使用SQLite数据库，可在窗口关闭时将数据保存到数据库，在窗口加载时从数据库读取数据，示例代码如下： ```csharp using System; using System.Data.SQLite; using System.Windows.Forms; public partial class Form1 : Form { private const string connectionString = "Data Source=listboxdata.db;Version=3;"; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { using (SQLiteConnection connection = new SQLiteConnection(connectionString)) { connection.Open(); string selectQuery = "SELECT Value FROM ListBoxItems"; using (SQLiteCommand command = new SQLiteCommand(selectQuery, connection)) { using (SQLiteDataReader reader = command.ExecuteReader()) { while (reader.Read()) { listBox1.Items.Add(reader["Value"].ToString()); } } } } } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { using (SQLiteConnection connection = new SQLiteConnection(connectionString)) { connection.Open(); string deleteQuery = "DELETE FROM ListBoxItems"; using (SQLiteCommand deleteCommand = new SQLiteCommand(deleteQuery, connection)) { deleteCommand.ExecuteNonQuery(); } foreach (object item in listBox1.Items) { string insertQuery = "INSERT INTO ListBoxItems (Value) VALUES (@Value)"; using (SQLiteCommand insertCommand = new SQLiteCommand(insertQuery, connection)) { insertCommand.Parameters.AddWithValue("@Value", item.ToString()); insertCommand.ExecuteNonQuery(); } } } } } ```