基于二进制的权限判断

来源：互联网发布：mac windows分区减小编辑：程序博客网时间：2024/05/16 15:17
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 EnumDemo{    public partial class Form2 : Form    {        string gl_role = "";        public Form2()        {            InitializeComponent();        }        private void Form2_Load(object sender, EventArgs e)        {            LoadUsers();        }        private void LoadUsers()        {            DataTable dt = new DataTable();            dt.Columns.Add("Userid");            dt.Columns.Add("Username");            dt.Columns.Add("Role");            DataRow dr = null;            dr = dt.NewRow();            dr["Userid"] = "101";            dr["Username"] = "Xiao ming";            dr["Role"] = "1";            dt.Rows.Add(dr);            dr = dt.NewRow();            dr["Userid"] = "102";            dr["Username"] = "Xiao li";            dr["Role"] = "2";            dt.Rows.Add(dr);            dr = dt.NewRow();            dr["Userid"] = "103";            dr["Username"] = "Xiao qing";            dr["Role"] = "4";            dr = dt.NewRow();            dr["Userid"] = "104";            dr["Username"] = "Xiao hang";            dr["Role"] = "8";            dt.Rows.Add(dr);            dr = dt.NewRow();            dr["Userid"] = "105";            dr["Username"] = "Xiao xiang";            dr["Role"] = "3";            dt.Rows.Add(dr);            dgvUserList.DataSource = dt;        }        private void dgvUserList_CellClick(object sender, DataGridViewCellEventArgs e)        {            if (e.ColumnIndex == -1 || e.RowIndex == -1)                return;            this.gl_role = this.dgvUserList.CurrentRow.Cells["Role"].Value.ToString();        }        private void button1_Click(object sender, EventArgs e)        {            IsInclude(1);        }        private void button2_Click(object sender, EventArgs e)        {            IsInclude(2);        }        private void IsInclude(int flag)        {            int select = int.Parse(gl_role);            if (flag == (select & flag))            {                MessageBox.Show("具有");            }            else            {                MessageBox.Show("不具有");            }        }        private void button4_Click(object sender, EventArgs e)        {            IsInclude(4);        }        private void button3_Click(object sender, EventArgs e)        {            IsInclude(8);        }    }}
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