通过SqlDataRader乘以列计数从C#查询中获取值

using System;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = "Data Source=(local);Initial Catalog=YourDatabase;Integrated Security=True";
        string query = "SELECT Column1, Column2 FROM YourTable";

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            SqlCommand command = new SqlCommand(query, connection);
            connection.Open();

            using (SqlDataReader reader = command.ExecuteReader())
            {
                while (reader.Read())
                {
                    int column1Value = reader.GetInt32(0); // 获取第一列的整数值
                    string column2Value = reader.GetString(1); // 获取第二列的字符串值

                    Console.WriteLine("Column1: {0}, Column2: {1}", column1Value, column2Value);
                }
            }
        }
    }
}