将列表框项目插入到SQL数据库表中，同时保持标识列不变

using System;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        // 连接数据库
        string connectionString = "Data Source=(local);Initial Catalog=数据库名;Integrated Security=True";
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();

            // 查询当前表的最大标识列值
            string selectQuery = "SELECT MAX(标识列) FROM 表名";
            SqlCommand selectCommand = new SqlCommand(selectQuery, connection);
            int maxId = Convert.ToInt32(selectCommand.ExecuteScalar());

            // 构建INSERT语句
            string insertQuery = "INSERT INTO 表名 (标识列, 列1, 列2, 列3) VALUES (@标识列, @列1, @列2, @列3)";
            SqlCommand insertCommand = new SqlCommand(insertQuery, connection);
            insertCommand.Parameters.AddWithValue("@标识列", maxId + 1);
            insertCommand.Parameters.AddWithValue("@列1", 值1);
            insertCommand.Parameters.AddWithValue("@列2", 值2);
            insertCommand.Parameters.AddWithValue("@列3", 值3);

            // 执行INSERT语句
            insertCommand.ExecuteNonQuery();
        }
    }
}