C# 批量新增的两种方法。

public class Test
{
private static readonly string strConnection = "";
public static void BulktoDb(DataTable dt)
{
//1、SqlBulkCopy
try
{
  using (SqlConnection sqlConn = new SqlConnection(strConnection))
{
using (TransactionScope tran = new TransactionScope())
{
sqlConn.Open();
//1、SqlBulkCopy
using (SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConn))
{
//服务器上目标表的名称 
bulkCopy.DestinationTableName = "数据库表名";
bulkCopy.BatchSize = dt.Rows.Count;
bulkCopy.BulkCopyTimeout = 600;
for (int i = 0; i < dt.Columns.Count; i++)
{
//映射数据源中的列和目标表中的列之间的关系 
bulkCopy.ColumnMappings.Add(dt.Columns[i].ColumnName, dt.Columns[i].ColumnName);
}
bulkCopy.WriteToServer(dt);
tran.Complete();//事物提交 
}
}
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}

//2、表值参数，sql2008+
//2-1 数据库代码 CREATE TYPE TestType(数据库表值参数名称) AS TABLE(Id int NOT NULL,Name nvarchar(20) NOT NULL)

//2-2
const string sql = "insert into UserInfo (Id,UserName,Pwd)" + " SELECT nc.Id, nc.UserName,nc.Pwd" + " FROM @NewBulkTestTvp AS nc";
SqlConnection sqlConn2 = new SqlConnection(strConnection);
SqlCommand cmd = new SqlCommand(sql, sqlConn2);
SqlParameter catParam = cmd.Parameters.AddWithValue("@NewBulkTestTvp", dt);
catParam.SqlDbType = SqlDbType.Structured;
catParam.TypeName = "数据库表值参数名称";
try
{
sqlConn2.Open();
if (dt.Rows.Count != 0)
{
cmd.ExecuteNonQuery();
}
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
finally
{
if (sqlConn2 != null)
{
if (sqlConn2.State == ConnectionState.Open)
{
sqlConn2.Close();
}
sqlConn2.Dispose();
}
if (cmd != null) cmd.Dispose();
}
}
}