C#批量插入数据到Sqlserver中的三种方式

create database CarSYS; 
go 
use CarSYS; 
go 
CREATE TABLE Product(
Id UNIQUEIDENTIFIER PRIMARY KEY,
NAME VARCHAR(50) NOT NULL,
Price DECIMAL(18,2) NOT NULL
)

INSERT INTO Product(Id,Name,Price) VALUES(newid(),'牛栏1段',160);
INSERT INTO Product(Id,Name,Price) VALUES(newid(),'牛栏2段',260);
......

INSERT INTO Product(Id,Name,Price) VALUES
(newid(),'牛栏1段',160)
,(newid(),'牛栏2段',260)
......

INSERT INTO Product(Id,Name,Price)
 SELECT NEWID(),'牛栏1段',160 
 UNION ALL 
 SELECT NEWID(),'牛栏2段',180
 UNION ALL
...... 

  static void InsertOne()
  {
   Console.WriteLine("采用一条一条插入的方式实现");
   Stopwatch sw = new Stopwatch();
   long totalRow = 1000000;

   using (SqlConnection conn = new SqlConnection(StrConnMsg)) //using中会自动Open和Close 连接。
   {
    string sql = "INSERT INTO Product(Id,Name,Price) VALUES(newid(),@p,@d)";
    conn.Open();
    for (int i = 0; i < 1000000; i++)
    {
     using (SqlCommand cmd = new SqlCommand(sql, conn))
     {

      cmd.Parameters.AddWithValue("@p", "商品" + i);
      cmd.Parameters.AddWithValue("@d", i);
      sw.Start();
      cmd.ExecuteNonQuery();

      Console.WriteLine(string.Format("插入1条记录，时间：{0}", sw.ElapsedMilliseconds));
     }
     if (i == 1000)
     {
      sw.Stop();
      break;
     }
    }
   }
   Console.WriteLine(string.Format("插入{0}条记录，每1000条的插入时间是{1}毫秒,预估总得插入时间是{2}毫秒，{3}分钟", totalRow, sw.ElapsedMilliseconds,
 ((sw.ElapsedMilliseconds / 1000) * totalRow), GetMinute((sw.ElapsedMilliseconds / 1000 * totalRow))));
  }

  #region 方式二
  static void InsertTwo()
  {
   Console.WriteLine("使用Bulk插入的实现方式");
   Stopwatch sw = new Stopwatch();
   DataTable dt = GetTableSchema();

   using (SqlConnection conn = new SqlConnection(StrConnMsg))
   {
    SqlBulkCopy bulkCopy = new SqlBulkCopy(conn);
    bulkCopy.DestinationTableName = "Product";
    bulkCopy.BatchSize = dt.Rows.Count;
    conn.Open();
    sw.Start();

    for (int i = 0; i < totalRow;i++ )
    {
     DataRow dr = dt.NewRow();
     dr[0] = Guid.NewGuid();
     dr[1] = string.Format("商品", i);
     dr[2] = (decimal)i;
     dt.Rows.Add(dr);
    }
     if (dt != null && dt.Rows.Count != 0)
     {
      bulkCopy.WriteToServer(dt);
      sw.Stop();
     }
     Console.WriteLine(string.Format("插入{0}条记录共花费{1}毫秒，{2}分钟", totalRow, sw.ElapsedMilliseconds, GetMinute(sw.ElapsedMilliseconds)));
   }
  }
  static DataTable GetTableSchema()
  {
   DataTable dt = new DataTable();
   dt.Columns.AddRange(new DataColumn[] { 
  new DataColumn("Id",typeof(Guid)), 
  new DataColumn("Name",typeof(string)), 
  new DataColumn("Price",typeof(decimal))});
   return dt;
  }
  #endregion

CREATE TYPE ProductTemp AS TABLE(
Id UNIQUEIDENTIFIER PRIMARY KEY,
NAME VARCHAR(50) NOT NULL,
Price DECIMAL(18,2) NOT NULL
)