如何在C#控制台应用搜索功能中搜索SQL Server表？

using System;
using System.Data.SqlClient;

namespace ConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            string connectionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password";
            string tableName = "TableName";
            string searchKeyword = "Keyword";

            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();

                string query = $"SELECT * FROM {tableName}";
                SqlCommand command = new SqlCommand(query, connection);

                using (SqlDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        for (int i = 0; i < reader.FieldCount; i++)
                        {
                            string columnValue = reader[i].ToString();
                            if (columnValue.Contains(searchKeyword))
                            {
                                Console.WriteLine($"Match found in column {reader.GetName(i)}: {columnValue}");
                            }
                        }
                    }
                }
            }

            Console.ReadLine();
        }
    }
}