求类似案例源码！！winform用户登陆只能查看自己的信息 并且不可修改

Question

管理员可查看所有人 可以修改指定用户指定权限

满足标题就可以了

Answer 1

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Q691926
{
    public partial class LoginDialog : Form
    {
        public LoginDialog()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            var db = new Q691926DBClassDataContext();
            if (db.UserInfos.Any(x => x.username == textBox1.Text && x.pwd == textBox2.Text))
            {
                this.Hide();
                Session.UserName = textBox1.Text;
                var f = new MainForm();
                f.FormClosed += new FormClosedEventHandler(f_FormClosed);
                f.Show();
            }
            else
            {
                MessageBox.Show("wrong password!");
            }
        }

        void f_FormClosed(object sender, FormClosedEventArgs e)
        {
            this.Show();
        }
    }
}

 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Q691926
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            var db = new Q691926DBClassDataContext();
            string query = db.UserInfos.First(x => x.username == Session.UserName).info;
            label1.Text = query;
        }
    }
}