private void btnadd_Click(object sender, EventArgs e) { if (Class1.stuId != -1) { SqlConnection newcon1 = new SqlConnection(con); newcon1.Open(); string qu = "update ClassAttendance set AttendanceDate='" + dateTimePicker1.Value.Date + "' where Id='" + Class1.stuId + "'"; SqlCommand newcom = new SqlCommand(qu, newcon1); newcom.ExecuteNonQuery(); newcon1.Close(); Class1.stuId = -1; } else { SqlConnection newcon = new SqlConnection(con); newcon.Open(); string qu = "insert into ClassAttendance(AttendanceDate) values('" + dateTimePicker1.Value.Date + "')"; SqlCommand newcom = new SqlCommand(qu, newcon); newcom.ExecuteNonQuery(); newcon.Close(); } this.Hide(); ClassAttendance back = new ClassAttendance(); back.Show(); }
private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { this.Hide(); ClassAttendance bck = new ClassAttendance(); bck.Show(); }
private void linkLabel8_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { this.Hide(); ClassAttendance add = new ClassAttendance(); add.Show(); }