private void button3_Click(object sender, EventArgs e) //添加新纪录
{
int id = 1;
if (Userlist.Count != 0)
{
id = Userlist[Userlist.Count - 1].Userid + 1; //生成用户ID
User user = new User(id, textBox2.Text.Trim(), textBox3.Text.Trim()); //创建对象，封装输入
sa.Users.InsertOnSubmit(user); //将对象添加到Table里
try
{
sa.SubmitChanges(); //更新结果提交
Userlist.Add(user); //实体集合中添加新的对象
num = Userlist.Count; //ID号更新
show_user(); //显示
MessageBox.Show("已成功添加新记录", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "warning", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
