private void OpenForm(string sql, string type) { SqlDataReader sqlData = YRHelper.GetDataReader(sql); if (sqlData.HasRows) { switch (type) { case "student": FrmStudent stu = new FrmStudent(txtAccount.Text); stu.Show(); this.Hide(); break; case "teacher": FrmTeacher tea = new FrmTeacher(txtAccount.Text); tea.Show(); this.Hide(); break; case "admin": FrmAdmin admin = new FrmAdmin(txtAccount.Text); admin.Show(); this.Hide(); break; } } else { MessageBox.Show("登录失败,请检查账号或密码!"); } sqlData.Close(); }
private void 学生档案查询ToolStripMenuItem_Click(object sender, EventArgs e) { if (FrmStu == null || FrmStu.IsDisposed) { FrmStu = new FrmStudent(); } Size OldSize = FrmStu.Size; this.Size = new Size(OldSize.Width + 20, OldSize.Height + 70); FrmStu.MdiParent = this; FrmStu.Location = new Point(0, 0);; FrmStu.Show(); }
private void btmLogin_Click(object sender, EventArgs e) { string sql = string.Format("select * from tbluser where username='******' and userpwd='{1}'", txtName.Text, txtPwd.Text); DataSet ds = Common.QuerySql(sql); if (ds.Tables[0].Rows.Count > 0) { FrmStudent f = new FrmStudent(); f.Show(); this.Hide(); } else { MessageBox.Show("账号或密码错误"); } }
private void button1_Click(object sender, EventArgs e) { string id, pwd; id = textBox1.Text; pwd = textBox1.Text; if (id == "123") { FrmStudent f = new FrmStudent(); f.Show(); } else { MessageBox.Show("账号或密码错误"); } }
private void button1_Click(object sender, EventArgs e) { FrmStudent frm = new FrmStudent(); frm.Show(); }