C#_會員管理系統：開發八（權限分配）

數據庫設計

這里由於增加了普通用戶權限值,我們需要對數據庫結構稍作修改.這里在MovieAccount表中增加4列內容 分別用於

RightFManager       判斷普通用戶管理界面權限        RightFRegistration  判斷普通用戶注冊權限   

RightFPwdChange   判斷普通用戶密碼修改權限        RightFLog             判斷普通用戶日志查詢權限

詳細數據庫語句：

use Vip
select * from VipAccount
alter table VipAccount add RightFManager int null
alter table VipAccount add RightFRegistration int null
alter table VipAccount add RightFPwdChange int null
alter table VipAccount add RightFLog int null

登錄窗體(VIPLogin.cs)代碼修改,詳細代碼如下：

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 會員管理系統
{
    public partial class VIPLogin : Form
    {
        public VIPLogin()
        {
            InitializeComponent();
        }
        //用於連接配置文件App.config
        string connStr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;
        //定義一個全局變量 Uid;
        //用於獲取登錄成功后的用戶名
        public static string uid;
        //定義一個全局變量 time;
        //用於獲取用戶登錄時的時間
        public static DateTime time;
        //定義一個全局變量situation
        //用於獲取用戶的登錄狀態
        public static string situation;
        //定義一個全局變量UserType
        //用於獲取用戶權限
        public static string UserType;
        //定義一個全局變量 數組FRight 來獲取登錄成功的普通用戶功能權限
        public static int[] FRight;

        //登錄按鈕
        private void btnLogin_Click(object sender, EventArgs e)
        {
            //連接數據庫語句
            using(SqlConnection con=new SqlConnection(connStr))
            {
                //操作數據庫語句
                string sql = "select vuserpwd,usertype,RightFManager,RightFRegistration,RightFPwdChange,RightFLog from vipaccount where vUserName='" + txtName.Text + "'";
                using(SqlCommand cmd=new SqlCommand(sql,con))
                {
                    //打開數據庫
                    con.Open();
                    //使用 SqlDataReader 來 讀取數據庫
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        //SqlDataReader 在數據庫中為 從第1條數據開始 一條一條往下讀
                        if (sdr.Read()) //如果讀取賬戶成功(文本框中的用戶名在數據庫中存在)
                        {
                            //則將第1條 密碼 賦給 字符串pwd  ,並且依次往后讀取 所有的密碼
                            //Trim()方法為移除字符串前后的空白
                            string pwd = sdr.GetString(0).Trim();
                            //讀取器sdr獲取了2列數據 第1列為密碼 第2列 即索引為1的是用戶類型
                            string uType = sdr.GetString(1).Trim() ;
                            //如果 文本框中輸入的密碼 ==數據庫中的密碼
                            if (pwd == txtPwd.Text)
                            {
                                uid = txtName.Text;
                                time = DateTime.Now;
                                situation = "登錄";
                                //將登錄成功的用戶類型 賦給全局變量UserType
                                //用於獲取當前登錄 用戶的類型
                                UserType = uType;
                                /************用戶登錄成功后 對用戶類型進行判斷********************/

                                //用戶功能權限索引i  對應的數據讀取器sdr里的索引是 是 i+2
                                //FRight[0] = sdr.GetInt32(2);   //RightFManager
                                //FRight[1] = sdr.GetInt32(3);   //RightFRegistration
                                //FRight[2] = sdr.GetInt32(4);   //RightFPwdChange
                                //FRight[3] = sdr.GetInt32(5);   //RightFLog

                                //如果用戶為普通用戶 則檢查 其功能權限 管理員不被檢查    
                                if (UserType == "NormalUser")
                                {
                                    FRight = new int[4];
                                    for (int i = 0; i < FRight.Length; i++)
                                    {
                                        //如果數據讀取器中讀到數據庫中的權限值為0
                                        if (sdr.GetInt32(i + 2) == 0)
                                        {
                                            //則賦給全局變量0  說明該功能被禁用
                                            FRight[i] = 0;
                                        }
                                        //如果 為1
                                        else if (sdr.GetInt32(i + 2) == 1)
                                        {
                                            //賦給全局變量1   該功能可用
                                            FRight[i] = 1;
                                        }
                                        else
                                        {
                                            //否則默認為0  該功能不可用
                                            FRight[i] = 0;
                                        }
                                    }
                                }
                                //說明在該賬戶下 密碼正確, 系統登錄成功
                                MessageBox.Show("登錄成功，正在進入主界面......");
                                //***************新增代碼***************
                                VIPLog vl = new VIPLog();
                                //添加當前的用戶信息到日志中
                                vl.AddMsg();
                                //退出程序
                                //創建新的會員資料管理界面窗體並顯示，同時把登錄界面隱藏
                                //VIPManager vm=new VIPManager();
                                VIPMain vmain = new VIPMain();
                                vmain.Show();
                                this.Hide();
                                //***************新增代碼***************
                            }
                            else
                            {
                                //密碼錯誤
                                MessageBox.Show("密碼錯誤，請重新輸入");
                                txtPwd.Text = "";
                            }
                        }
                        else
                        {
                            //用戶名錯誤
                            MessageBox.Show("用戶名錯誤，請重新輸入!");
                            txtName.Text = "";
                        }
                    }
                }
            }
        }
        
        //設置快捷鍵
        private void VIPLogin_KeyDown(object sender, KeyEventArgs e)
        {
            //如果按下ESC鍵
            if (e.KeyCode == Keys.Escape)
            {
                //關閉窗體
                this.Close();
            }
            //如果按下F5鍵
            else if (e.KeyCode == Keys.F5)
            {
                //調用登錄按鈕單擊事件
                this.btnLogin_Click(null,null);
            }
        }

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

        //當登錄窗體為活動窗體時
        private void VIPLogin_Activated(object sender, EventArgs e)
        {
            //設置文本框txtName獲得焦點
            txtName.Focus();
        }

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

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

主界面(VIPMain.cs)代碼修改，詳細如下：

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 會員管理系統
{
    public partial class VIPMain : Form
    {
        public VIPMain()
        {
            InitializeComponent();
            //窗體加載的時候 自動獲取 並判斷普通用戶的功能權限

            //當用戶為普通用戶的時候 需要判斷下其功能權限  管理員不接受檢查
            if (VIPLogin.UserType=="NormalUser")
            {
                //對應的功能權限為1的時候 本功能開放
                if (VIPLogin.FRight[0] == 1)
                {
                    btnVIPManager.Enabled = true;
                }
                //否則 禁用本功能
                else
                {
                    btnVIPManager.Enabled = false;
                }
                //對應的功能權限為1的時候 本功能開放
                if (VIPLogin.FRight[1] == 1)
                {
                    btnRegistration.Enabled = true;
                }
                //否則 禁用本功能
                else
                {
                    btnRegistration.Enabled = false;
                }
                //對應的功能權限為1的時候 本功能開放
                if (VIPLogin.FRight[2] == 1)
                {
                    btnPwdChange.Enabled = true;
                }
                //否則 禁用本功能
                else
                {
                    btnPwdChange.Enabled = false;
                }
                //對應的功能權限為1的時候 本功能開放
                if (VIPLogin.FRight[3] == 1)
                {
                    btnLog.Enabled = true;
                }
                //否則 禁用本功能
                else
                {
                    btnLog.Enabled = false;
                }
            }
        }

        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();
            //徹底的退出
            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 = "當前登錄用戶為："+VIPLogin.uid+ "   用戶類型：" + VIPLogin.UserType + "   登錄時間為："+VIPLogin.time;
            //給當前用戶打招呼 
            //這里通過獲取當前用戶電腦上的時間 以及判斷登錄用戶的類型 來給不同類型的用戶打招呼  
            // 定義整型變量 intTime 來獲取 用戶電腦上的具體小時數 然后在如下進行判斷
            int inttime = VIPLogin.time.Hour;
            //獲取VIPLogin窗體的全局變量 UserType 用戶類型, 用於給不同類型的用戶打招呼
            string uType = VIPLogin.UserType;
            //在凌晨0-6點的時候
            if (inttime >= 0 && inttime < 6)
            {
                if (uType == "Administrator")
                {
                    lblSayHi.Text = "尊敬的"+ VIPLogin.uid + "您好,現在已夜深，請注意休息！";
                }
                else if (uType == "NormalUser")
                {
                    lblSayHi.Text = "親愛的" + VIPLogin.uid + "您好,現在已夜深，請注意休息！";
                }
            }
            //早上6點-中午12點的時候
            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 = "親愛的" + VIPLogin.uid + "早上好！";
                }
            }
            //中午12點-下午6點的時候
            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 = "親愛的" + 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 = "親愛的" + VIPLogin.uid + "晚上好！";
                }
            }
            //否則 默認為
            else 
            {
                lblSayHi.Text = "歡迎使用會員管理系統！";
            }
            ////判斷用戶類型 並給用戶設置功能權限
            //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();
        }

        private void btnVIPUserManger_Click(object sender, EventArgs e)
        {
            VIPUserManger vum = new VIPUserManger();
            vum.Show();
            this.Hide();
        }
    }
}

用戶權限功能判斷成功之后,我們便要開始寫管理員給普通用戶分配權限的功能,我們新建一個普通用戶管理窗體VIPUserManger.cs(該功能僅限於管理員使用).

窗體設計如下：

 

 詳細代碼如下：

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

namespace 會員管理系統
{
    public partial class VIPUserManger : Form
    {
        public VIPUserManger()
        {
            InitializeComponent();
        }
        //定義私有變量-功能權限值 用於獲取 radiobutton 被check后的返回值
        private int rightFManager = 0;
        private int rightFRegistration = 0;
        private int rightFPwdChange = 0;
        private int rightFLog = 0;

        //strType 用於獲取 當前DataGridView 被點中行的用戶類型
        private string strUType = "";

        //經常會調用的數據庫語句，放出來方便使用
        string connstr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;

        private void ViewAllUsers()
        {
            //string connstr = ConfigurationManager.ConnectionStrings["str"].ConnectionString;
            SqlConnection conn = new SqlConnection(connstr);
            string sql = "select * from VipAccount";
            SqlCommand cmd = new SqlCommand(sql,conn);
            DataTable dt = new DataTable();
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            sda.Fill(dt);
            dgvUserManger.DataSource = dt;
        }

        private void VIPUserManger_Load(object sender, EventArgs e)
        {
            //為cboUserType下拉框添加可選值
            cboUserType.Items.AddRange(new string[] { "NormalUser", "Administrator" });
            //刷新dgvUserManger數據界面
            ViewAllUsers();
        }

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

        private void btnClose_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void dgvUserManger_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            //點中DataGridView后,將當前行內容傳遞給文本框 便於在文本框中修改
            txtUserName.Text = dgvUserManger.Rows[e.RowIndex].Cells["vusername"].Value.ToString();
            txtPwd.Text = dgvUserManger.Rows[e.RowIndex].Cells["vuserpwd"].Value.ToString();
            cboUserType.Text = dgvUserManger.Rows[e.RowIndex].Cells["usertype"].Value.ToString();

            //獲取用戶類型
            strUType = cboUserType.Text.Trim();
            /************************************************************************************/
            //每次點擊 DataGridView新的行之前 都要把前一次點擊行的 CheckBox 狀態調整為系統默認狀態 全未選中 並且都可選
            //比如 如果之前 點了NormalUser 再點Administer 會保留之前NormalUser的選擇項 這里我們需要清空
            chkManager.Checked = false;
            chkRegistration.Checked = false;
            chkPwdChange.Checked = false;
            chkLog.Checked = false;

            txtUserName.Enabled = true;
            txtPwd.Enabled = true;
            cboUserType.Enabled = true;
            chkManager.Enabled = true;
            chkRegistration.Enabled = true;
            chkPwdChange.Enabled = true;
            chkLog.Enabled = true;

            if (strUType == "NormalUser")
            {
                //獲取當前DataGridView被點中行內容中的用戶權限值
                rightFManager = Convert.ToInt32(dgvUserManger.Rows[e.RowIndex].Cells["RightFManager"].Value);
                rightFRegistration = Convert.ToInt32(dgvUserManger.Rows[e.RowIndex].Cells["RightFRegistration"].Value);
                rightFPwdChange = Convert.ToInt32(dgvUserManger.Rows[e.RowIndex].Cells["RightFPwdChange"].Value);
                rightFLog = Convert.ToInt32(dgvUserManger.Rows[e.RowIndex].Cells["RightFLog"].Value);

                //同時判斷獲取的權限值  並相應的選中Checkbox
                if (rightFManager == 1)
                    chkManager.Checked = true;
                else
                    chkManager.Checked = false;
                if (rightFRegistration == 1)
                    chkRegistration.Checked = true;
                else
                    chkRegistration.Checked = false;
                if (rightFPwdChange == 1)
                    chkPwdChange.Checked = true;
                else
                    chkPwdChange.Checked = false;
                if (rightFLog == 1)
                    chkLog.Checked = true;
                else
                    chkLog.Checked = false;
            }
            //當用戶類型為管理員的時候,將所有的CheckBox禁用, 管理員功能權限不允許設置
            else if (strUType == "Administrator")
            {
                chkManager.Enabled = false;
                chkPwdChange.Enabled = false;
                chkRegistration.Enabled = false;
                chkLog.Enabled = false;

                txtUserName.Enabled = false;
                txtPwd.Enabled = false;
                cboUserType.Enabled = false;
            }
        }

        //查詢用戶信息
        private void txtUserQuery_TextChanged(object sender, EventArgs e)
        {
            string sql = "";

            if (txtUserQuery.Text.Trim() == "")
            {
                //執行查詢語句
                sql = "select * from VipAccount";
            }
            else
            {
                //全局搜索 (通過用戶ID  用戶名和 用戶類型進行模糊查找)
                sql = "select * from VipAccount where(vId like'%" + txtUserQuery.Text.Trim() + "%')or(vUserName like'%" + txtUserQuery.Text.Trim() + "%')or(UserType like'%" + txtUserQuery.Text.Trim() + "%')";
            }
            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand(sql, conn);
            DataTable dt = new DataTable();
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            sda.Fill(dt);
            dgvUserManger.DataSource = dt;

        }

        //調用查看所有用戶的方法來刷新當前 DataGridView的內容
        private void btnView_Click(object sender, EventArgs e)
        {
            //點擊 "查看所有" 按鈕  調用  ViewAllUsers 方法 刷新 並查當前看所有用戶
            ViewAllUsers();
        }

        //添加用戶
        private void btnAdd_Click(object sender, EventArgs e)
        {
            //判斷插入的數據是否為空,如果為空,則提示重新插入!
            if (txtUserName.Text.Trim() == "" || txtPwd.Text.Trim() == "" || cboUserType.Text == "")
            {
                MessageBox.Show("插入數據不能為空,請按要求插入數據!");
                return;
            }
            if (cboUserType.Text == "Administrator")
            {
                MessageBox.Show("暫不開放注冊管理員功能!");
                return;
            }

            //使用SQL插入數據語句
            string sql = "insert into VipAccount(vUserName,vUserPwd,UserType,RightFManager,RightFRegistration,RightFPwdChange,RightFLog) values (@vUserName,@vUserPwd,@UserType,@RightFManager,@RightFRegistration,@RightFPwdChange,@RightFLog)";

            //判斷 哪些CheckBox 被選中
            JudgeChecked();

            //向數據庫插入參數
            SqlParameter[] param ={
                                      new SqlParameter("@vUserName",txtUserName.Text.Trim()),
                                      new SqlParameter("@vUserPwd",txtPwd.Text.Trim()),
                                      new SqlParameter("@UserType",cboUserType.Text.Trim()),
                                      new SqlParameter("@RightFManager",rightFManager),
                                      new SqlParameter("@RightFRegistration",rightFRegistration),
                                      new SqlParameter("@RightFPwdChange",rightFPwdChange),
                                      new SqlParameter("@RightFLog",rightFLog)

                                  };

            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand(sql,conn);
            conn.Open();
            cmd.Parameters.AddRange(param);
            int n = cmd.ExecuteNonQuery();
            conn.Close();

            if (n > 0)
            {
                MessageBox.Show("數據插入成功!");
            }
            else
            {
                MessageBox.Show("插入失敗!");
                return;
            }

            //調用ViewAllUsers 方法 用於刷新 在添加完成數據后 自動刷新數據
            ViewAllUsers();
        }
        //判斷CheckBox是否被點重或是取消, 用於更新和修改用戶權限
        private void JudgeChecked()
        {
            //當相應的功能權限 checkbox 被點中 或者取消  將分別賦值 並傳給相應的私有變量 用於數據庫添加,更新等操作
            if (chkManager.Checked == true)
                rightFManager = 1;
            else
                rightFManager = 0;
            if (chkRegistration.Checked == true)
                rightFRegistration = 1;
            else
                rightFRegistration = 0;
            if (chkPwdChange.Checked == true)
                rightFPwdChange = 1;
            else
                rightFPwdChange = 0;
            if (chkLog.Checked == true)
                rightFLog = 1;
            else
                rightFLog = 0;
        }

        //保存修改的信息
        private void btnSave_Click(object sender, EventArgs e)
        {
            //在對數據進行修改之前 對文本框的內容做一下檢查 是否用戶已經輸入內容, 如果為空 則提示重新輸入
            if (txtUserName.Text.Trim() == "" || txtPwd.Text.Trim() == "" || cboUserType.Text.Trim() == "")
            {
                MessageBox.Show("文本框的輸入不能為空!");
                return;
            }
            if (cboUserType.Text == "Administrator")
            {
                MessageBox.Show("暫不開放注冊管理員功能!");
                return;
            }

            //判斷 哪些CheckBox 被選中
            JudgeChecked();

            //使用SQL update 更新語句
            //獲取文本框 和ComboBox 輸入的內容, 通過用戶的ID(vId) 進行更新(ID為當前鼠標點擊行的vId)
            string sqlUpdate = "update VipAccount set vUserName = @vUserName, vUserPwd = @vUserPwd,UserType=@UserType,RightFManager=@RightFManager,RightFRegistration=@RightFRegistration,RightFPwdChange=@RightFPwdChange,RightFLog=@RightFLog where vId=@vId";

            SqlParameter[] param ={
                                      new SqlParameter("@vUserName",txtUserName.Text.Trim()),
                                      new SqlParameter("@vUserPwd",txtPwd.Text.Trim()),
                                      new SqlParameter("@UserType",cboUserType.Text.Trim()),
                                      new SqlParameter("@RightFManager",rightFManager),
                                      new SqlParameter("@RightFRegistration",rightFRegistration),
                                      new SqlParameter("@RightFPwdChange",rightFPwdChange),
                                      new SqlParameter("@RightFLog",rightFLog),
                                      new SqlParameter("@vId",dgvUserManger.CurrentRow.Cells[0].Value),
                                  };
            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand(sqlUpdate, conn);
            conn.Open();
            cmd.Parameters.AddRange(param);
            int n = cmd.ExecuteNonQuery();
            conn.Close();

            //判定 如果n=0,則說明沒有獲取到數據,ExecuteNonQuery執行不成功
            if (n == 0)
            {
                //提示更新失敗
                MessageBox.Show("更新失敗!");
                return;// 並且返回
            }
            else
            {
                //否則更新成功
                MessageBox.Show("恭喜你!更新成功!");
            }

            //保存完以后  調用刷新方法,將更新后的數據 顯示在datagridview上面
            ViewAllUsers();
        }

        //刪除DataGridView里 選中的用戶
        private void btnDelete_Click(object sender, EventArgs e)
        {
            //使用sql刪除語句
            string sqlDelete = null;
            //如果datagridview的當前行被選中
            if (dgvUserManger.CurrentRow.Selected)
            {
                //獲取當前點中行的vID 並且 將當前行的vID號 賦給SQL 語句 
                sqlDelete = "delete from VipAccount where vId=@vId";
            }

            SqlParameter[] param = {
                                    new SqlParameter("@vId",Convert.ToInt32(dgvUserManger.CurrentRow.Cells[0].Value))      
                                   };
            SqlConnection conn = new SqlConnection(connstr);
            SqlCommand cmd = new SqlCommand(sqlDelete, conn);
            conn.Open();
            cmd.Parameters.AddRange(param);
            int n = cmd.ExecuteNonQuery();
            conn.Close();
            //如果n>0  說明刪除數據成功
            if (n > 0)
            {
                MessageBox.Show("刪除成功!");
            }
            else //否則失敗
            {
                MessageBox.Show("不存在的ID!");
            }
            //刪除完后 刷新一下當前數據
            ViewAllUsers();
        }
    }
}

最后,由於在數據庫中新增了幾列普通用戶功能權限的字段,我們的用戶注冊窗體也需要稍作修改(這里普通用戶注冊是默認禁用其所有功能權限,需要管理員在普通用戶管理窗體賦予其相應的功能權限).

詳細代碼如下：

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

namespace 會員管理系統
{
    public partial class VIPRegistration : Form
    {
        public VIPRegistration()
        {
            InitializeComponent();
        }


        //提交按鈕
        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一個 uType 來獲取 radiobutton 點擊事件下 觸發的用戶類型賦值
            string uType = "";

            int rightFManager = 0;
            int rightFRegistration = 0;
            int rightFPwdChange = 0;
            int rightFLog = 0;

            if (rdoAdministrator.Checked)
            {
                uType = "Administrator";
                rightFManager = 1;
                rightFRegistration = 1;
                rightFPwdChange = 1;
                rightFLog = 1;
            }
            else if (rdoNormalUser.Checked)
            {
                uType = "NormalUser";
            }
            else
            {
                uType = "NormalUser";
            }

            //---------------------------
            if (txtName.Text.Trim() == "")
            {
                lblName.Text = "用戶名不能為空";
                return;
            }
            else if (txtPwd.Text.Trim() == "" || txtPwdConfirm.Text.Trim() == "")
            {
                lblPwd.Text = "密碼不能為空";
                return;
            }
            else if (txtPwdConfirm.Text.Trim() != txtPwd.Text.Trim())
            {
                lblPwdConfirm.Text = "兩次密碼輸入不同，請確認后再輸";
                return;
            }
            else if (sda.Read())
            {
                lblName.Text = "用戶名已存在，請重新輸入";
                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,RightFManager,RightFRegistration,RightFPwdChange,RightFLog) values(@vUserName,@vUserPwd,@UserType,@RightFManager,@RightFRegistration,@RightFPwdChange,@RightFLog) ";
                //使用1個SQL參數數組 來裝載 需要插入的數據
                SqlParameter[] param = {
                                            new SqlParameter("@vUserName",txtName.Text),
                                            new SqlParameter("@vUserPwd",txtPwd.Text),
                                            new SqlParameter("@UserType",uType),
                                            new SqlParameter("@RightFManager",rightFManager),
                                            new SqlParameter("@RightFRegistration",rightFRegistration),
                                            new SqlParameter("@RightFPwdChange",rightFPwdChange),
                                            new SqlParameter("@RightFLog",rightFLog)
                                       };

                SqlCommand cmdinsert = new SqlCommand(insertsql, conninsert);
                conninsert.Open();
                cmdinsert.Parameters.AddRange(param);
                int n = cmdinsert.ExecuteNonQuery();
                if (n == 0)
                {
                    MessageBox.Show("注冊失敗，請重新輸入");
                }
                else
                {
                    MessageBox.Show("注冊成功");
                }
                conninsert.Close();

            }
            //conn.Close();
        }

        //返回主菜單
        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 = "";
        }

    }
}

 附上源代碼：

會員管理系統.rar