C#批量入库

public static void BulkCopyToDB(DataTable dt, string conn, string tableName, out string msg)
{
msg = "";

if (dt.Rows.Count > 0)
{
using (SqlConnection connection = new SqlConnection(conn))
{
connection.Open();

using (SqlBulkCopy bulkCopy = new SqlBulkCopy(connection))
{
bulkCopy.DestinationTableName = tableName;
try
{
bulkCopy.WriteToServer(dt);
}
catch (Exception ex)
{
msg = ex.Message.ToString();
BLL.Loger.Log4Net.Error(ex.Message, ex);
}
finally
{
bulkCopy.Close();
}
}
}
}
}