登录及注册

登录界面

image.png

登录界面代码

调用数据库识别用户
                if (dr.HasRows)
                {
                    dr.Read();
                    UserInfo.userId = int.Parse(dr["ID"].ToString());
                    UserInfo.userName = dr["NAME"].ToString();
                    UserInfo.userPwd = dr["PASSWORD"].ToString();
                    UserInfo.userRole = dr["ROLE"].ToString();
                    UserInfo.userDepartment = dr["DEPARTMENT"].ToString();
                    UserInfo.userGender = dr["GENDER"].ToString();

                    MessageBox.Show(UserInfo.userRole + "登录成功");

                    if (UserInfo.userRole == "职员")
                    {
                       
                    }

                    if (UserInfo.userRole == "管理员")
                    {
                       
                        MainFormAdmin formAdmin = new MainFormAdmin();
                        formAdmin.Show();

            
                        this.Hide();
                    }
登录成功后跳转到管理员界面

    private void ll_Register_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
        RecordForm form = new RecordForm();
        form.Show();
    }

管理员界面

image.png

管理员界面代码

设置父子窗口

    private void tsmi_Record_Click(object sender, EventArgs e)
    {
        /*
        RecordForm recordForm = new RecordForm();
        recordForm.MdiParent = this;
        recordForm.Show();
        */

        //RecordForm2 recordForm = new RecordForm2();
        //recordForm.MdiParent = this;
        //recordForm.Show();
        RecordForm form = new RecordForm();
        form.MdiParent = this;
        form.Show();
    }

注册界面

image.png

注册界面代码

调用参数

        private void bt_Ok_Click(object sender, EventArgs e)
        {
            String id = this.tb_Id.Text.Trim();
            String name = this.tb_Name.Text.Trim();
            String pwd = this.tb_pwd.Text.Trim();
            String gender = this.comboBox1.Text.Trim();
            String department = this.comboBox2.Text.Trim();
            String role = this.comboBox3.Text.Trim();

            // 连接字符串，注意与实际环境保持一致
            String connStr = ConfigurationManager.ConnectionStrings["Attendance"].ConnectionString;
            SqlConnection sqlConn = new SqlConnection(connStr);
            try
            {
                // 连接数据库
                sqlConn.Open();

                // 构造命令
                String sqlStr = "insert into EMPLOYEE(ID, NAME, PASSWORD, GENDER, DEPARTMENT,ROLE) values(@id, @name, @pwd, @gender, @department, @role)";
                SqlCommand cmd = new SqlCommand(sqlStr, sqlConn);

                // SQL字符串参数赋值
                cmd.Parameters.Add(new SqlParameter("@id", id));
                cmd.Parameters.Add(new SqlParameter("@name", name));
                cmd.Parameters.Add(new SqlParameter("@pwd", pwd));
                cmd.Parameters.Add(new SqlParameter("@gender", gender));
                cmd.Parameters.Add(new SqlParameter("@department", department));
                cmd.Parameters.Add(new SqlParameter("@role", role));
            }

在comboBox中调用数据库信息

     private void RecordForm_Load(object sender, EventArgs e)
    {
       
        comboBox3.SelectedIndex = 0;
        comboBox1.SelectedIndex = 0;
        String connStr = ConfigurationManager.ConnectionStrings["Attendance"].ConnectionString;
        SqlConnection sqlConn = new SqlConnection(connStr);
        sqlConn.Open();
        String sqlStr1 = "select MAX(id+1) as id from employee";
        String sqlStr2 = "select distinct(department) from employee";
        SqlCommand cmd1 = new SqlCommand(sqlStr1, sqlConn);
        SqlCommand cmd2 = new SqlCommand(sqlStr2, sqlConn);
        SqlDataReader xh = cmd1.ExecuteReader();
        if (xh.HasRows)
        {
            xh.Read();
            tb_Id.Text = xh["ID"].ToString();
        }
        sqlConn.Close();
        sqlConn.Open();
        SqlDataReader dr = cmd2.ExecuteReader();
        if (dr.HasRows)
        {
            while (dr.Read())
                comboBox2.Items.Add(dr["DEPARTMENT"].ToString());
        }
        comboBox2.SelectedIndex = 0;
        sqlConn.Close();
    }

查询界面代码

、、、
private void button1_Click(object sender, EventArgs e)
{
string connStr = ConfigurationManager.ConnectionStrings["Attendance"].ConnectionString;
SqlConnection conn = new SqlConnection(connStr);
conn.Open();

        //2.利用DataAdapter对象，建立与数据库的连接桥
            string str_1 = dateTimePicker1.Value.ToString();
            string str_2 = dateTimePicker2.Value.ToString();
            String sqlStr = "select serial,date,time,machine_id,employee_id from record where date>=@str_1 and  date<=@str_2 and employee_id = @id; ";
        
        SqlCommand cmd = new SqlCommand(sqlStr, conn);
            cmd.Parameters.Add(new SqlParameter("@id", UserInfo.userId));
            cmd.Parameters.Add(new SqlParameter("@str_1", str_1));
            cmd.Parameters.Add(new SqlParameter("@str_2", str_2));
        SqlDataAdapter adapter = new SqlDataAdapter(cmd);
        adapter.SelectCommand = cmd;
        //3.通过DataAdapter桥，将查询结果存储到DataSet对象中
        DataSet ds = new DataSet();
        adapter.Fill(ds);

        //4.利用DataGridView控件将DataSet中的查询结果显示出来
        dataGridView1.DataSource = ds.Tables[0];

        //5.关闭数据库连接
        conn.Close();

    }

职员界面代码

    private void 查询ToolStripMenuItem_Click(object sender, EventArgs e)
    {
       q aaForm = new q();
        //pwdForm.MdiParent = this;
        //pwdForm.StartPosition = FormStartPosition.CenterScreen;
       aaForm.Show();
    }