private void ReturnBook_Load(object sender, EventArgs e) { //发邮件控件是否可见 if (PublicPassBy.level != "管理员") { send_email.Visible = false; btn_all.Visible = false; } //时间显示 timer1.Interval = 1000; timer1.Start(); //底部状态栏数据 LoginForm lg = new LoginForm(); level1 = PublicPassBy.level; if (level1 == "用户") { tSSL2.Text = "权限级别:普通用户"; } else { tSSL2.Text = "权限级别:管理员"; } tSSL5.Text = " " + PublicPassBy._name; // if (PublicPassBy.level == "用户") { string sql = "select * from Borrow_List where 借阅人账号='" + PublicPassBy.id + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } }
private void button_Search_Click(object sender, EventArgs e) { if (comboBox_Search.Text == " ") { MessageBox.Show("请先选择要查找的类型!"); } if (comboBox_Search.Text == "账号") { string sql = "select * from Login_ID where 账号 ='" + textBox_Search.Text.ToString() + "' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } if (comboBox_Search.Text == "手机号码") { string sql = "select * from Login_ID where 电话号码 ='" + textBox_Search.Text.ToString() + "' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } if (comboBox_Search.Text == "邮箱") { string sql = "select * from Login_ID where 邮箱 ='" + textBox_Search.Text.ToString() + "' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } if (comboBox_Search.Text == "姓名") { string sql = "select * from Login_ID where 姓名 ='" + textBox_Search.Text.ToString() + "' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } }
private void toolStripLabel3_Click(object sender, EventArgs e) { string sql = "select * from Books_Info "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; }
private void btn_all_Click(object sender, EventArgs e) { string sql = "select * from Borrow_List"; DataBaseApplication.ExecuteNonQuery(sql); DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); dataGridView1.DataSource = dt; }
private void button1_Click(object sender, EventArgs e) { string sql = "select * from Login_ID"; DataBaseApplication.ExecuteNonQuery(sql); DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; }
private void BorrowBook_Load(object sender, EventArgs e) { string sql = "select * from Books_Info where 书籍序列号='" + select_ID.ToString() + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); textBox_No.Text = dt.Rows[0][0].ToString(); textBox_Name.Text = dt.Rows[0][1].ToString(); textBox_Author.Text = dt.Rows[0][2].ToString(); textBox_Press.Text = dt.Rows[0][3].ToString(); textBox_ID.Text = PublicPassBy.id; textBox_Who.Text = PublicPassBy._name; }
private void Add_Book_Load(object sender, EventArgs e) { if (type == "2") { string sql = "select * from Books_Info where 书籍序列号='" + select_ID.ToString() + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); textBox_No.Text = dt.Rows[0][0].ToString(); textBox_BookName.Text = dt.Rows[0][1].ToString(); textBox_Author.Text = dt.Rows[0][2].ToString(); textBox_Press.Text = dt.Rows[0][3].ToString(); textBox_Price.Text = dt.Rows[0][4].ToString(); textBox_Storage.Text = dt.Rows[0][5].ToString(); button3.Visible = false; } }
private void MainForm_Load(object sender, EventArgs e) { //时间显示 timer1.Interval = 1000; timer1.Start(); //底部状态栏数据 LoginForm lg = new LoginForm(); level1 = PublicPassBy.level; if (level1 == "用户") { tSSL2.Text = "权限级别:普通用户"; } else { tSSL2.Text = "权限级别:管理员"; } tSSL5.Text = " " + PublicPassBy._name; //权限设置 if (level1 == "用户") { Add_User.Visible = false; 新用户注册ToolStripMenuItem.Visible = false; Add_Books.Visible = false; 热门推荐ToolStripMenuItem.Visible = false; 新书入库ToolStripMenuItem.Visible = false; } //热门推荐 string sql = "select 书名,排行 from Book_Recommend"; DataTable dt = new DataTable(); DataBaseApplication.ExecuteNonQuery(sql); dt = DataBaseApplication.GetDataTableValue(sql); label1_1.Text = dt.Rows[0][0].ToString(); label2_2.Text = dt.Rows[1][0].ToString(); label3_3.Text = dt.Rows[2][0].ToString(); label4_4.Text = dt.Rows[3][0].ToString(); label5_5.Text = dt.Rows[4][0].ToString(); }
private void toolStripButton1_Click(object sender, EventArgs e) { if (toolStripComboBox1.Text == "") { MessageBox.Show("请添加完整!"); } if (toolStripComboBox1.Text == "书名") { string sql = "select distinct 书名,作者,出版社 from Books_Info where 书名 like '%" + toolStripTextBox1.Text.ToString() + "%' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } if (toolStripComboBox1.Text == "作者") { string sql = "select * from Books_Info where 作者 like '%" + toolStripTextBox1.Text.ToString() + "%' "; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; } }
private void BorrowBook1_Load(object sender, EventArgs e) { string sql = "select * from Books_Info where 书名='" + Select_ID + "'and 库存数!=0"; DataBaseApplication.ExecuteNonQuery(sql); DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql);//执行sql语句 dataGridView1.DataSource = dt; //书评展示 string sql1 = "select 书评,评分 from IMDB where 书名='" + Select_ID + "'"; DataBaseApplication.ExecuteNonQuery(sql1); DataTable dt1 = new DataTable(); dt1 = DataBaseApplication.GetDataTableValue(sql1); dataGridView2.DataSource = dt1; //平均分 string sql2 = "select avg(评分) from IMDB where 书名='" + Select_ID + "'"; DataBaseApplication.ExecuteNonQuery(sql2); DataTable dt2 = new DataTable(); dt2 = DataBaseApplication.GetDataTableValue(sql2); avgRate.Text = dt2.Rows[0][0].ToString(); //--------------------------------控件大小随窗体大小变化 /* this.Resize += new EventHandler(BorrowBook1_Resize); * * X = this.Width; * Y = this.Height; * * setTag(this); * BorrowBook1_Resize(new object(), new EventArgs());*/ //---------------------------------控件大小随窗体大小变化 }
private void btn_login_Click(object sender, EventArgs e) { //#1判断非空 trim用于删除空格 if (this.textBox_id.Text.ToString().Trim() == "" || this.textBox_password.Text.ToString().Trim() == "") { MessageBox.Show("请补全用户名密码"); return; } //要求选择权限类型 if (radioButton_admin.Checked == false && radioButton_user.Checked == false) { MessageBox.Show("请选择您的用户身份!"); } //判断权限类型 if (radioButton_admin.Checked == true) { level = "管理员"; PublicPassBy.level = level; } if (radioButton_user.Checked == true) { level = "用户"; PublicPassBy.level = level; } //判断用户是否存在 DataTable dt = new DataTable(); string user_name = ""; string pass_word = ""; //读取界面值 user_name = this.textBox_id.Text.ToString().Trim(); pass_word = this.textBox_password.Text.ToString().Trim(); //sql string sql = "select * from Login_ID where 账号='" + user_name + "'"; dt = DataBaseApplication.GetDataTableValue(sql); //读取账号所有人的名字 PublicPassBy._name = dt.Rows[0]["姓名"].ToString(); //读取账号 PublicPassBy.id = dt.Rows[0]["账号"].ToString(); //读取邮箱 PublicPassBy.email = dt.Rows[0]["邮箱"].ToString(); //判断用户是否存在 if (dt.Rows.Count == 0) { MessageBox.Show("该用户不存在"); return; } //判断密码和权限 if (dt.Rows[0]["密码"].ToString() == pass_word) { if (dt.Rows[0]["身份"].ToString() == level) { SystemLog.loginState = "OK"; SystemLog.user_name = user_name; SystemLog.user_key = dt.Rows[0]["密码"].ToString(); this.Close(); } } if (dt.Rows[0]["密码"].ToString() != pass_word) { MessageBox.Show("用户名和密码不匹配"); } if (dt.Rows[0]["身份"].ToString() != level) { MessageBox.Show("您无此权限!"); } }
private void Add_User_Load(object sender, EventArgs e) { //注册界面 if (type == "0")//首页注册 { textBox_Title.Text = "用户"; textBox_Title.ReadOnly = true; } if (type == "1") { if (PublicPassBy.level == "用户") { textBox_Title.Text = "用户"; textBox_Title.ReadOnly = true; } } if (type == "2") { string sql = "select * from Login_ID where 账号='" + select_ID.ToString() + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); textBox_ID.Text = dt.Rows[0][0].ToString(); textBox_Password.Text = dt.Rows[0][1].ToString(); textBox_Title.Text = dt.Rows[0][2].ToString(); textBox_phonenum.Text = dt.Rows[0][3].ToString(); textBox_email.Text = dt.Rows[0][4].ToString(); textBox_Name.Text = dt.Rows[0][5].ToString(); textBox_Point.Text = dt.Rows[0][6].ToString(); //积分不可修改 textBox_Point.ReadOnly = true; } if (type == "3") { string sql = "select * from Login_ID where 姓名='" + PublicPassBy._name + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); textBox_ID.Text = dt.Rows[0][0].ToString(); textBox_Password.Text = dt.Rows[0][1].ToString(); textBox_Title.Text = dt.Rows[0][2].ToString(); textBox_phonenum.Text = dt.Rows[0][3].ToString(); textBox_email.Text = dt.Rows[0][4].ToString(); textBox_Name.Text = dt.Rows[0][5].ToString(); textBox_Point.Text = dt.Rows[0][6].ToString(); //积分不可修改 textBox_Point.ReadOnly = true; //用户属性不可改 textBox_Title.ReadOnly = true; } if (type == "4")//用户自己查询 { string sql = "select * from Login_ID where 姓名='" + PublicPassBy._name + "'"; DataTable dt = new DataTable(); dt = DataBaseApplication.GetDataTableValue(sql); textBox_ID.Text = dt.Rows[0][0].ToString(); textBox_Password.Text = dt.Rows[0][1].ToString(); textBox_Title.Text = dt.Rows[0][2].ToString(); textBox_phonenum.Text = dt.Rows[0][3].ToString(); textBox_email.Text = dt.Rows[0][4].ToString(); textBox_Name.Text = dt.Rows[0][5].ToString(); textBox_Point.Text = dt.Rows[0][6].ToString(); //查询时只读 textBox_ID.ReadOnly = true; textBox_Password.ReadOnly = true; textBox_Title.ReadOnly = true; textBox_phonenum.ReadOnly = true; textBox_email.ReadOnly = true; textBox_Name.ReadOnly = true; textBox_Point.ReadOnly = true; } }