数据源，网格视图和下拉列表
问题描述：
你好，
我有一个使用DataSource连接到DB的网格视图.
数据源具有一个查询，该查询从数据库中选择具有特定ID的项目.
另外，我有一个DropDown-List，我想更新dataSource的查询，因此，当用户从DropDown-List中选择某个索引时，它将在Grid View中显示相关数据.
请帮忙！
Hello,
I have a Grid View that connected to DB with DataSource.
The DataSource have a query that selects items from the DB that have a specific ID.
also, I have a DropDown-List and I want to update the query of the dataSource so when the user selects some index from the DropDown-List it will show the relevant data in the Grid View .
Please Help!
Thanks.
答
使用BindingSource.Filter过滤您的dataGridView.
更改DropDownList_SelectedIndexChanged中的过滤器.
Use BindingSource.Filter to filter your dataGridView.
change the filter in DropDownList_SelectedIndexChanged.