private void ChangeClicked(object sender, EventArgs e) { SemesterRepository sRepo = new SemesterRepository(); if (sRepo.GetSemester2(this.textBoxSemesterId3.Text).RegistrationStatus == "Close") { if (sRepo.UpdateRegistrationStatus2(this.textBoxSemesterId3.Text, "Open") != 0) { MessageBox.Show("Registration Opened", "Successful"); this.dataGridViewSemesters.DataSource = sRepo.GetAllSemesters2(); this.textBoxSemesterId3.Text = ""; } else { MessageBox.Show("Error", "Failed"); } } else if (sRepo.GetSemester2(this.textBoxSemesterId3.Text).RegistrationStatus == "Open") { if (sRepo.UpdateRegistrationStatus2(this.textBoxSemesterId3.Text, "Close") != 0) { MessageBox.Show("Registration Closed", "Successful"); this.dataGridViewSemesters.DataSource = sRepo.GetAllSemesters2(); this.textBoxSemesterId3.Text = ""; } else { MessageBox.Show("Error", "Failed"); } } else { MessageBox.Show("Invalid Semester ID", "Failed"); } }