批量高效向sqlserver中插入数据

原文：http://blog.csdn.net/tjvictor/article/details/4360030

 表值参数是SQL Server 2008新特性，简称TVPs  

代码如下：

数据库创建：

--Create DataBase  
create database BulkTestDB;  
go  
use BulkTestDB;  
go  
--Create Table  
Create table BulkTestTable(  
Id int primary key,  
UserName nvarchar(32),  
Pwd varchar(16))  
go  
--Create Table Valued  
CREATE TYPE BulkUdt AS TABLE  
  (Id int,  
   UserName nvarchar(32),  
   Pwd varchar(16))  

public static void TableValuedToDB(DataTable dt)  //把表内容写入数据库
{  
    SqlConnection sqlCOnn= new SqlConnection(  
      ConfigurationManager.ConnectionStrings["ConnStr"].ConnectionString);  
    const string TSqlStatement =  
     "insert into BulkTestTable (Id,UserName,Pwd)" +  
     " SELECT nc.Id, nc.UserName,nc.Pwd" +  
     " FROM @NewBulkTestTvp AS nc";  
    SqlCommand cmd = new SqlCommand(TSqlStatement, sqlConn);  
    SqlParameter catParam = cmd.Parameters.AddWithValue("@NewBulkTestTvp", dt);  //定义表值参数（把表作为参数传入）
    catParam.SqlDbType = SqlDbType.Structured;  
    //表值参数的名字叫BulkUdt，在上面的建立测试环境的SQL中有。  
    catParam.TypeName = "dbo.BulkUdt";   //数据库中创建的表值参数名字  
    try  
    {  
      sqlConn.Open();  
      if (dt != null && dt.Rows.Count != 0)  
      {  
          cmd.ExecuteNonQuery();  
      }  
    }  
    catch (Exception ex)  
    {  
      throw ex;  
    }  
    finally  
    {  
      sqlConn.Close();  
    }  
}  
  
public static DataTable GetTableSchema()  //创建对应格式的DataTable
{  
    DataTable dt = new DataTable();  
    dt.Columns.AddRange(new DataColumn[]{  
      new DataColumn("Id",typeof(int)),  
      new DataColumn("UserName",typeof(string)),  
      new DataColumn("Pwd",typeof(string))});  
  
    return dt;  
}  
  
static void Main(string[] args)  
{  
    Stopwatch sw = new Stopwatch();  
    for (int multiply = 0; multiply <10; multiply++)  
    {  
        DataTable dt = TableValued.GetTableSchema();  
        for (int count = multiply * 100000; count <(multiply + 1) * 100000; count++)  
        {          
            DataRow r = dt.NewRow();  
            r[0] = count;  
            r[1] = string.Format("User-{0}", count * multiply);  
            r[2] = string.Format("Pwd-{0}", count * multiply);  
            dt.Rows.Add(r);  
        }  
        sw.Start();  
        TableValued.TableValuedToDB(dt);  
        sw.Stop();  
        Console.WriteLine(string.Format("Elapsed Time is {0} Milliseconds", sw.ElapsedMilliseconds));  
    }  
  
    Console.ReadLine();  
}  

注意：