LINQ to SQL ,直接在datagridview中修改,结合使用submitchange()
思路是:
直接将IQueryable<T>绑定到BindingSource
再把BindingSource绑定到DataGridView
这样就可以直接用DataContext.SubmitChanges()来向数据库提交更改
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace _18 { public partial class Form1 : Form { booksDataClassesDataContext bookstore = new booksDataClassesDataContext(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { this.book_infoDataGridView.DataSource = this.bookstore.book_info; BindingSource bds = new BindingSource(); bds.DataSource = this.bookstore.book_info; this.book_infoBindingSource = bds; this.book_infobindingNavigator.BindingSource = bds; } private void save_Click(object sender, EventArgs e) { //this.book_infoBindingSource.EndEdit(); this.book_infoDataGridView.EndEdit(); var bookquery = from booked in bookstore.book_info select booked; ////将泛型集合IQueryable<T>的 bookquery对象集赋给DataGridView this.book_infoDataGridView.DataSource = bookquery; bookstore.SubmitChanges(); } } }