private void button2_Click(object sender, EventArgs e) { int id = int.Parse(dataGridView1.CurrentRow.Cells[0].Value.ToString()); using (var db = new studentEntities()) { var tbs = db.StudentInfo.Where(t => t.Id == id).FirstOrDefault(); tbs.Name = "更新" + Name + DateTime.Now.ToString(); db.SaveChanges(); } MessageBox.Show("更新成功"); FrmMainCache_Load(null, null); }
private void button1_Click(object sender, EventArgs e) { int intnum = int.Parse(textBox1.Text.Trim()); //EF一定要有主键,否则报错 using (var enty = new studentEntities()) { for (int i = intnum; i < intnum + 100; i++) { StudentInfo aa = new StudentInfo(); aa.Addess = "地址" + intnum; aa.Age = i + 1; aa.Cid = i; aa.Name = "姓名" + i; enty.StudentInfo.Add(aa); } enty.SaveChanges(); } MessageBox.Show("成功"); FrmMainCache_Load(null, null); }