c# winform下访问ACCESS数据库的两种不同方法合DataGridView下导出Excel的两种不同方法的代码，一种是直接生成，一种是通过打开模板写入，希望能用上。-c# winform access ACCESS database by two different methods under the Export DataGridView All Excel are two different ways to the code, one is directly generated, one is by opening the template to write, I hope can be used on.