C#_会员管理系统：开发七（用户分类）

登录界面(VIPLogin.cs)详细代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace 会员管理系统
{
    public partial class VIPLogin : Form
    {
        public VIPLogin()
        {
            InitializeComponent();
        }
        //用于连接配置文件App.config
        string connStr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;
        //定义一个全局变量 Uid;
        //用于获取登录成功后的用户名
        public static string uid;
        //定义一个全局变量 time;
        //用于获取用户登录时的时间
        public static DateTime time;
        //定义一个全局变量situation
        //用于获取用户的登录状态
        public static string situation;
        //定义一个全局变量UserType
        //用于获取用户权限
        public static string UserType;

        //登录按钮
        private void btnLogin_Click(object sender, EventArgs e)
        {
            //连接数据库语句
            using(SqlConnection con=new SqlConnection(connStr))
            {
                //操作数据库语句
                string sql = "select vuserpwd,usertype from vipaccount where vUserName='" + txtName.Text + "'";
                using(SqlCommand cmd=new SqlCommand(sql,con))
                {
                    //打开数据库
                    con.Open();
                    //使用 SqlDataReader 来 读取数据库
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        //SqlDataReader 在数据库中为 从第1条数据开始 一条一条往下读
                        if (sdr.Read()) //如果读取账户成功(文本框中的用户名在数据库中存在)
                        {
                            //则将第1条 密码 赋给 字符串pwd  ,并且依次往后读取 所有的密码
                            //Trim()方法为移除字符串前后的空白
                            string pwd = sdr.GetString(0).Trim();
                            //读取器sdr获取了2列数据 第1列为密码 第2列 即索引为1的是用户类型
                            string uType = sdr.GetString(1).Trim() ;
                            //如果 文本框中输入的密码 ==数据库中的密码
                            if (pwd == txtPwd.Text)
                            {
                                uid = txtName.Text;
                                time = DateTime.Now;
                                situation = "登录";
                                //将登录成功的用户类型 赋给全局变量UserType
                                //用于获取当前登录 用户的类型
                                UserType = uType;
                                //说明在该账户下 密码正确, 系统登录成功
                                MessageBox.Show("登录成功，正在进入主界面......");
                                //***************新增代码***************
                                VIPLog vl = new VIPLog();
                                //添加当前的用户信息到日志中
                                vl.AddMsg();
                                //退出程序
                                //创建新的会员资料管理界面窗体并显示，同时把登录界面隐藏
                                //VIPManager vm=new VIPManager();
                                VIPMain vmain = new VIPMain();
                                vmain.Show();
                                this.Hide();
                                //***************新增代码***************
                            }
                            else
                            {
                                //密码错误
                                MessageBox.Show("密码错误，请重新输入");
                                txtPwd.Text = "";
                            }
                        }
                        else
                        {
                            //用户名错误
                            MessageBox.Show("用户名错误，请重新输入!");
                            txtName.Text = "";
                        }
                    }
                }
            }
        }
        
        //设置快捷键
        private void VIPLogin_KeyDown(object sender, KeyEventArgs e)
        {
            //如果按下ESC键
            if (e.KeyCode == Keys.Escape)
            {
                //关闭窗体
                this.Close();
            }
            //如果按下F5键
            else if (e.KeyCode == Keys.F5)
            {
                //调用登录按钮单击事件
                this.btnLogin_Click(null,null);
            }
        }

        //关闭
        private void btnClose_Click(object sender, EventArgs e)
        {
            //彻底的退出
            System.Environment.Exit(0);
        }

        //当登录窗体为活动窗体时
        private void VIPLogin_Activated(object sender, EventArgs e)
        {
            //设置文本框txtName获得焦点
            txtName.Focus();
        }

        //获取文本框txtName的快捷键
        private void txtName_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                txtPwd.Focus();
                txtPwd.SelectAll();
            }
        }

        //获取文本框txtPwd的快捷键
        private void txtPwd_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                btnLogin_Click(null, null);
            }
        }
    }
}

主界面(VIPMain.cs)新增一个Label控件：

详细代码如下：

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 会员管理系统
{
    public partial class VIPMain : Form
    {
        public VIPMain()
        {
            InitializeComponent();
        }

        private void btnVIPManager_Click(object sender, EventArgs e)
        {
            VIPManager vm = new VIPManager();
            vm.Show();
            this.Hide();
        }

        private void btnVIPLogin_Click(object sender, EventArgs e)
        {
            VIPLog vipl = new VIPLog();
            vipl.GetExitTime();
            vipl.AddMsg();
            VIPLogin vp = new VIPLogin();
            vp.Show();
            this.Hide();
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            VIPLog vipl = new VIPLog();
            vipl.GetExitTime();
            vipl.AddMsg();
            //彻底的退出
            System.Environment.Exit(0);
        }

        private void btnPwdChange_Click(object sender, EventArgs e)
        {
            VIPPwdChange vpc = new VIPPwdChange();
            vpc.Show();
            this.Hide();
        }

        private void VIPMain_Load(object sender, EventArgs e)
        {
            lblCurrentUser.Text = "当前登录用户为："+VIPLogin.uid+ "   用户类型：" + VIPLogin.UserType + "   登录时间为："+VIPLogin.time;
            //给当前用户打招呼 
            //这里通过获取当前用户电脑上的时间 以及判断登录用户的类型 来给不同类型的用户打招呼  
            // 定义整型变量 intTime 来获取 用户电脑上的具体小时数 然后在如下进行判断
            int inttime = VIPLogin.time.Hour;
            //获取VIPLogin窗体的全局变量 UserType 用户类型, 用于给不同类型的用户打招呼
            string uType = VIPLogin.UserType;
            //在凌晨0-6点的时候
            if (inttime >= 0 && inttime < 6)
            {
                if (uType == "Administrator")
                {
                    lblSayHi.Text = "尊敬的"+ VIPLogin.uid + "您好,现在已夜深，请注意休息！";
                }
                else if (uType == "NormalUser")
                {
                    lblSayHi.Text = "亲爱的" + VIPLogin.uid + "您好,现在已夜深，请注意休息！";
                }
            }
            //早上6点-中午12点的时候
            else if (inttime >= 6 && inttime < 12)
            {
                if (uType == "Administrator")
                {
                    lblSayHi.Text = "尊敬的" + VIPLogin.uid + "早上好！";
                }
                else if (uType == "NormalUser")
                {
                    lblSayHi.Text = "亲爱的" + VIPLogin.uid + "早上好！";
                }
            }
            //中午12点-下午6点的时候
            else if (inttime >= 12 && inttime < 18)
            {
                if (uType == "Administrator")
                {
                    lblSayHi.Text = "尊敬的" + VIPLogin.uid + "下午好！";
                }
                else if (uType == "NormalUser")
                {
                    lblSayHi.Text = "亲爱的" + VIPLogin.uid + "下午好！";
                }
            }
            //晚上
            else if (inttime >= 18 && inttime < 24)
            {
                if (uType == "Administrator")
                {
                    lblSayHi.Text = "尊敬的" + VIPLogin.uid + "晚上好！";
                }
                else if (uType == "NormalUser")
                {
                    lblSayHi.Text = "亲爱的" + VIPLogin.uid + "晚上好！";
                }
            }
            //否则 默认为
            else 
            {
                lblSayHi.Text = "欢迎使用会员管理系统！";
            }
            //判断用户类型 并给用户设置功能权限
            if (uType == "NormalUser")
            {
                btnRegistration.Enabled = false;
                btnLog.Enabled = false;
            }
        }

        private void btnLog_Click(object sender, EventArgs e)
        {
            VIPLog vl=new VIPLog();
            vl.Show();
            this.Hide();
        }

        private void btnRegistration_Click(object sender, EventArgs e)
        {
            VIPRegistration vrn = new VIPRegistration();
            vrn.Show();
            this.Hide();
        }
    }
}

会员资料管理(VIPManager.cs)详细代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace 会员管理系统
{
    public partial class VIPManager : Form
    {
        public VIPManager()
        {
            InitializeComponent();
        }

        //连接字符串 获取配置文件里的连接路径,多次需要调用，放在外面方便
        static string connStr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;
        //窗体运行自动加载
        private void VipManager_Load(object sender, EventArgs e)
        {
            //刷新数据
            Refresh();
            cmbforfieldSelecting.Text = "全局搜索";
            cmbforfieldSelecting.Items.Add("全局搜索");
            cmbforfieldSelecting.Items.Add("编号");
            cmbforfieldSelecting.Items.Add("名字");
            cmbforfieldSelecting.Items.Add("性别");
            cmbforfieldSelecting.Items.Add("年龄");
            cmbforfieldSelecting.Items.Add("地址");
            cmbforfieldSelecting.Items.Add("电话");
            //添加对用户 类型的判断 用来设置功能按钮的使用权限
            if (VIPLogin.UserType == "NormalUser")
            {
                btnAdd.Enabled = false;
                btnDelete.Enabled = false;
                btnSave.Enabled = false;
            }
        }

        //写一个刷新数据的方法(跟查看数据一样)
        public void Refresh(bool isAdded = false)
        {
            //查询数据库字符串
            string sql = String.Format("select vId '{0}',vName '{1}',vGender '{2}',vAge '{3}',vAddress '{4}',vPhone '{5}' from VipInformation", "编号", "名字", "性别", "年龄", "地址", "电话");
            //连接数据库对象
            SqlConnection conn = new SqlConnection(connStr);
            //操作数据库对象
            SqlCommand cmd = new SqlCommand(sql, conn);
            //创建表对象
            System.Data.DataTable dt = new System.Data.DataTable();
            //创建数据库填充操作对象(语句)
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            //把数据填充进dt表中
            sda.Fill(dt);
            //指定dgvManager控件的数据源:dt
            dgvManager.DataSource = dt;

            //if (isAdded)
            //{
            //    if (dt.Rows.Count > 0)
            //        dgvManager.Rows[0].Selected = false;
            //    dgvManager.Rows[dt.Rows.Count - 1].Selected = true;
            //}
        }

        //刷新数据界面
        private void btnView_Click(object sender, EventArgs e)
        {
            //刷新数据
            Refresh();
        }

        //添加数据
        private void btnAdd_Click(object sender, EventArgs e)
        {
            //判断文本框是否为空，提示数据完整性
            if (txtName.Text == "" || txtGender.Text == "" || txtAge.Text == "" || txtAddress.Text == "" || txtPhone.Text == "")
            {
                MessageBox.Show("数据不能为空，请填写齐全");
                return;
            }
            //插入数据库字符串
            string sql = string.Format("insert into VipInformation values('{0}','{1}',{2},'{3}','{4}')",txtName.Text.Trim(),txtGender.Text.Trim(),txtAge.Text.Trim(),txtAddress.Text.Trim(),txtPhone.Text.Trim());
            //连接数据库对象
            SqlConnection conn = new SqlConnection(connStr);
            //操作数据库对象
            SqlCommand cmd = new SqlCommand(sql, conn);
            //创建表对象
            System.Data.DataTable dt = new DataTable();
            //创建数据库填充操作对象(语句)
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            //把数据填充进dt表中
            sda.Fill(dt);
            //指定dgvManager控件的数据源:dt
            dgvManager.DataSource = dt;
            //刷新数据
            Refresh();
        }

        //删除数据
        private void btnDelete_Click(object sender, EventArgs e)
        {
            //使用sql删除语句,where 1=1 就是没有条件，等于全部数据删除
            string sql = "delete from VipInformation where 1=1";
            //如果选中某行则执行
            if (dgvManager.CurrentRow.Selected)
            {
                sql = sql + " and vid=" + Convert.ToInt32(dgvManager.CurrentRow.Cells[0].Value.ToString());
            }
            int n = 0;
            //创建连接数据库对象
            SqlConnection conn = new SqlConnection(connStr);
            //创建操作数据库对象
            SqlCommand cmd = new SqlCommand(sql, conn);
            //打开数据库
            conn.Open();
            //取得ExecuteNonQuery返回的受影响行数，无影响则为0
            n = cmd.ExecuteNonQuery();
            if (n == 0)
            {
                MessageBox.Show("删除操作失败!不存在的ID");
                conn.Close();
                return;
            }
            else if (n > 0)
            {
                MessageBox.Show("删除操作成功!");
            }
            //关闭数据库连接
            conn.Close();
            //刷新数据界面
            Refresh();
        }

        //修改数据
        private void btnSave_Click(object sender, EventArgs e)
        {
            if (txtName.Text == "" || txtGender.Text == "" || txtAge.Text == "" || txtAddress.Text == "" || txtPhone.Text == "")
            {
                MessageBox.Show("所提供的数据不完整，请填写完整数据");
                return;
            }
            int n = 0;
            //更新SQL语句
            string sqlupdate = "update VipInformation set vName='" + txtName.Text + "',vgender='" + txtGender.Text + "',vage=" + txtAge.Text + ",vaddress='" + txtAddress.Text + "',vphone='" + txtPhone.Text + "' where vid='" + dgvManager.CurrentRow.Cells[0].Value.ToString() + "'";
            SqlConnection conn = new SqlConnection(connStr);
            SqlCommand cmd = new SqlCommand(sqlupdate, conn);
            conn.Open();
            n = cmd.ExecuteNonQuery();
            if (n == 0)
            {
                MessageBox.Show("修改操作失败！");
                conn.Close();
                return;
            }
            else if (n > 0)
            {
                MessageBox.Show("修改操作成功!");
            }
            conn.Close();
            Refresh();
        }

        //点击dgvManager在文本框上显示
        private void dgvManager_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            txtName.Text = dgvManager.CurrentRow.Cells[1].Value.ToString();
            txtGender.Text = dgvManager.CurrentRow.Cells[2].Value.ToString();
            txtAge.Text = dgvManager.CurrentRow.Cells[3].Value.ToString();
            txtAddress.Text = dgvManager.CurrentRow.Cells[4].Value.ToString();
            txtPhone.Text = dgvManager.CurrentRow.Cells[5].Value.ToString();
        }

        string selectedValue;
        //事件索引改变时触发
        private void cmbforfieldSelecting_SelectedIndexChanged(object sender, EventArgs e)
        {
            string strSelected = cmbforfieldSelecting.Text;
            switch (strSelected)
            {
                case "全局搜索":
                    selectedValue = "全局搜索";
                    break;
                case "编号":
                    selectedValue="vid";
                    break;
                case "名字":
                    selectedValue = "vname";
                    break;
                case "性别":
                    selectedValue = "vgender";
                    break;
                case "年龄":
                    selectedValue = "vage";
                    break;
                case "地址":
                    selectedValue = "vaddress";
                    break;
                case "电话":
                    selectedValue = "vphone";
                    break;
                default:
                    selectedValue = "全局搜索";
                    break;
            }
        }

        private void txtDataforQuery_TextChanged(object sender, EventArgs e)
        {
            string sql = "";
            if (txtDataforQuery.Text.Trim() == "")
            {
                //执行查询语句
                sql = "select * from VipInformation";
            }
            else if (cmbforfieldSelecting.Text.Trim() == "全局搜索" || selectedValue == "全局搜索")
            {
                //全字段搜索
                sql = "select * from VipInformation where vName like '%" + txtDataforQuery.Text.Trim() + "%' or vgender like '%" + txtDataforQuery.Text.Trim() + "%' or vage like '%" + txtDataforQuery.Text.Trim() + "%' or vaddress like '%" + txtDataforQuery.Text.Trim() + "%' or vphone like '%" + txtDataforQuery.Text.Trim() + "%'";
            }
            else if (selectedValue == "vid" || selectedValue == "vname" || selectedValue == "vgender" || selectedValue == "vage" || selectedValue == "vaddress" || selectedValue == "vphone")
            {
                //通过相应的字段进行搜索
                sql = "select * from VipInformation where " + selectedValue + " like '%" + txtDataforQuery.Text.Trim() + "%'";
            }

            SqlConnection conn = new SqlConnection(connStr);
            SqlCommand cmd = new SqlCommand(sql, conn);
            conn.Open();
            DataTable dt = new DataTable();
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            sda.Fill(dt);
            dgvManager.DataSource = dt;
            conn.Close();
        }

        private void btnBack_Click(object sender, EventArgs e)
        {
            VIPMain vmain = new VIPMain();
            vmain.Show();
            this.Hide();
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            VIPLog vpl = new VIPLog();
            vpl.GetExitTime();
            vpl.AddMsg();
            //彻底的退出
            System.Environment.Exit(0);
        }
         

    }
}

用户注册界面(VIPRegistration.cs)新增控件，如图：

详细代码：

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;
using System.Data.SqlClient;
using System.Configuration;

namespace 会员管理系统
{
    public partial class VIPRegistration : Form
    {
        public VIPRegistration()
        {
            InitializeComponent();
        }


        //提交按钮
        private void btnOK_Click(object sender, EventArgs e)
        {
            
            string connstr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;
            SqlConnection conn = new SqlConnection(connstr);
            string sql = string.Format("select vusername from VipAccount where vUserName='{0}' ",txtName.Text);
            SqlCommand cmd = new SqlCommand(sql, conn);
            conn.Open();
            SqlDataReader sda=cmd.ExecuteReader();

            //new一个 uType 来获取 radiobutton 点击事件下 触发的用户类型赋值
            string uType = "";
            if (rdoAdministrator.Checked)
            {
                uType = "Administrator";
            }
            else if (rdoNormalUser.Checked)
            {
                uType = "NormalUser";
            }
            else
            {
                uType = "NormalUser";
            }

            //---------------------------
            if (txtName.Text.Trim() == "")
            {
                lblName.Text="用户名不能为空";
                return;
            }
            else if (txtPwd.Text.Trim() == ""|| txtPwdConfirm.Text.Trim()=="")
            {
                lblPwd.Text = "密码不能为空";
                return;
            }
            else if (txtPwdConfirm.Text.Trim()!= txtPwd.Text.Trim())
            {
                lblPwdConfirm.Text = "两次密码输入不同，请确认后再输";
                return;
            }
            else if (sda.Read())
            {
                lblName.Text = "用户名已存在，请重新输入";
                return;
            }
            else
            {
                conn.Close();
                SqlConnection conninsert = new SqlConnection(connstr);
                //string insertsql = string.Format("insert into VipAccount(vUserName,vUserPwd) values('{0}','{1}')",txtName.Text,txtPwd.Text);
                string insertsql = "insert into VipAccount(vUserName,vUserPwd,UserType) values(@vUserName,@vUserPwd,@UserType) ";
                //使用1个SQL参数数组 来装载 需要插入的数据
                SqlParameter[] param = {
                                            new SqlParameter("@vUserName",txtName.Text),
                                            new SqlParameter("@vUserPwd",txtPwd.Text),
                                            new SqlParameter("@UserType",uType)
                                       };
                
                SqlCommand cmdinsert = new SqlCommand(insertsql, conninsert);
                conninsert.Open();
                cmdinsert.Parameters.AddRange(param);
                int n = cmdinsert.ExecuteNonQuery();
                if (n == 0)
                {
                    MessageBox.Show("注册失败，请重新输入");
                }
                else
                {
                    MessageBox.Show("注册成功");
                }
                conninsert.Close();

            }
            //conn.Close();
        }

        //返回主菜单
        private void btnBack_Click(object sender, EventArgs e)
        {
            VIPMain vm = new VIPMain();
            vm.Show();
            this.Hide();
        }

        private void VIPRegistration_Load(object sender, EventArgs e)
        {
            lblName.Text = "";
            lblPwd.Text = "";
            lblPwdConfirm.Text = "";
        }
        
    }
}