#region 帮助实例：SQL 批量插入数据 多种方法
/// <summary>
/// SqlBulkCopy往数据库中批量插入数据
/// </summary>
/// <param name="sourceDataTable">数据源表</param>
/// <param name="targetTableName">服务器上目标表</param>
/// <param name="mapping">创建新的列映射，并使用列序号引用源列和目标列的列名称。</param>
public static void BulkToDB(DataTable sourceDataTable, string targetTableName, SqlBulkCopyColumnMapping[] mapping)
{
/* 调用方法 -2012年11月16日编写
//DataTable dt = Get_All_RoomState_ByHID();
//SqlBulkCopyColumnMapping[] mapping = new SqlBulkCopyColumnMapping[4];
//mapping[0] = new SqlBulkCopyColumnMapping("Xing_H_ID", "Xing_H_ID");
//mapping[1] = new SqlBulkCopyColumnMapping("H_Name", "H_Name");
//mapping[2] = new SqlBulkCopyColumnMapping("H_sName", "H_sName");
//mapping[3] = new SqlBulkCopyColumnMapping("H_eName", "H_eName");
//BulkToDB(dt, "Bak_Tts_Hotel_Name", mapping);
*/
SqlConnection conn = new SqlConnection(SQLHelper.ConnectionString);
SqlBulkCopy bulkCopy = new SqlBulkCopy(conn); //用其它源的数据有效批量加载sql server表中
bulkCopy.DestinationTableName = targetTableName; //服务器上目标表的名称
bulkCopy.BatchSize = sourceDataTable.Rows.Count; //每一批次中的行数

try
{
conn.Open();
if (sourceDataTable != null && sourceDataTable.Rows.Count != 0)
{
for (int i = 0; i < mapping.Length; i++)
bulkCopy.ColumnMappings.Add(mapping[i]);

//将提供的数据源中的所有行复制到目标表中
bulkCopy.WriteToServer(sourceDataTable );
}
}
catch (Exception ex)
{
//throw ex;
Common.WriteTextLog("BulkToDB", ex.Message);
}
finally
{
conn.Close();
if (bulkCopy != null)
bulkCopy.Close();
}
}
/// <summary>
/// SQL2008以上方可支持自定义表类型 :调用存储过程游标-往数据库中批量插入数据 ，注意
/// </summary>
/// <param name="sourceDataTable"></param>
public void DataTableToHotelDB(DataTable sourceDataTable)
{
/* -2012年11月15日编写
ALTER PROCEDURE [dbo].[P_InsertSubject]
@tempStudentID int
AS
DECLARE rs CURSOR LOCAL SCROLL FOR
select H_ID from Tts_Hotel_Name
OPEN rs
FETCH NEXT FROM rs INTO @tempStudentID
WHILE @@FETCH_STATUS = 0
BEGIN
Insert student (tempStudentID) values (@tempStudentID)
FETCH NEXT FROM rs INTO @tempStudentID
END
CLOSE rs
* ***************************************************************
* create table Orders
(
Orders_ID int identity(1,1) primary key,
ItemCode nvarchar(50) not null,
UM nvarchar(20) not null,
Quantity decimal(18,6) not null,
UnitPrice decimal(18,6) not null
)

--创建用户自定义表类型，在可编程性->类型性->用户自定义表类型
create type OrdersTableType as table
(
ItemCode nvarchar(50) not null,
UM nvarchar(20) not null,
Quantity decimal(18,6) not null,
UnitPrice decimal(18,6) not null
)
go

create procedure Pro_Orders
(
@OrdersCollection OrdersTableType readonly
)
as
insert into Orders([ItemCode],[UM],[Quantity],[UnitPrice])
SELECT oc.[ItemCode],oc.[UM],[Quantity],oc.[UnitPrice] FROM @OrdersCollection AS oc;

go
*
*/

SqlParameter[] parameters = {new SqlParameter("@OrdersCollection", SqlDbType.Structured)};
parameters[0].Value = sourceDataTable;
new SQLHelper().ExecuteScalar("P_DataTable_ToHotelDB", parameters, true);
}
#endregion

#region 使用SqlBulkCopy将DataTable中的数据批量插入数据库中
/// <summary>
/// 使用SqlBulkCopy将DataTable中的数据批量插入数据库中
/// </summary>
/// <param name="strTableName">数据库中对应的表名</param>
/// <param name="dtData">数据集</param>
public void SqlBulkCopyInsert(string strTableName, DataTable dtData)
{
string ConStr = connectionString;// 数据库连接字符串

try
{
using (SqlBulkCopy sqlRevdBulkCopy = new SqlBulkCopy(ConStr))//引用SqlBulkCopy
{
sqlRevdBulkCopy.DestinationTableName = strTableName;//数据库中对应的表名

sqlRevdBulkCopy.NotifyAfter = dtData.Rows.Count;//有几行数据

sqlRevdBulkCopy.WriteToServer(dtData);//数据导入数据库

sqlRevdBulkCopy.Close();//关闭连接
}
}
catch (Exception ex)
{
WriteErrorLog(ex.Message + "数据库处理出错654行。SqlBulkCopyInsert");
throw (ex);
}
}
#endregion

private static void DataTableToSQLServer( DataTable dt)
{
string connectionString = GetConnectionString();

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

using (SqlBulkCopy bulkCopy =new SqlBulkCopy(destinationConnection))
{

try
{

bulkCopy.DestinationTableName = "T_EIInformation";//要插入的表的表明
bulkCopy.ColumnMappings.Add("Email", "Email");//映射字段名 DataTable列名 ,数据库 对应的列名
bulkCopy.ColumnMappings.Add("author", "author");
bulkCopy.ColumnMappings.Add("Title", "Title");
bulkCopy.ColumnMappings.Add("Type", "Type");
bulkCopy.ColumnMappings.Add("confName", "confName");
bulkCopy.ColumnMappings.Add("Language", "Language");
bulkCopy.ColumnMappings.Add("Publicationyear", "Publicationyear");
bulkCopy.ColumnMappings.Add("Conferencelocation", "Conferencelocation");
bulkCopy.WriteToServer(dt);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
// Close the SqlDataReader. The SqlBulkCopy
// object is automatically closed at the end
// of the using block.

}
}

}

}