无法将类型“System.Data.SqlClient.SqlCommand”隐式转换为“System.Data.SqlClient.SqlConnection

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
namespace ADO汇总
{
    class Program
    {
        static void Main(string[] args)
        {
            string dataDir = AppDomain.CurrentDomain.BaseDirectory;
            if (dataDir.EndsWith(@"\bin\Debug\")
                || dataDir.EndsWith(@"\bin\Release\"))
            {
                dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName;
                AppDomain.CurrentDomain.SetData("DataDirectory", dataDir);
            }            using (SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\MyData1.mdf;Integrated Security=True;User Instance=True"))
            {
                conn.Open();
                using (SqlConnection cmd = conn.CreateCommand())                {
                    //我还没有开始写他就报这个错了，另外我创建的cmd.  里面有值，但没有Command。求助
                }
             
            }
            Console.WriteLine("okay!!!!!!!!!");
            Console.ReadKey();
        }
    }
}法将类型“System.Data.SqlClient.SqlCommand”隐式转换为“System.Data.SqlClient.SqlConnection

Answer 1

using (SqlCommand cmd = conn.CreateCommand())