//When the save button is pressed
private void save_button_Click(object sender, EventArgs e)
{
Regex checkName = new Regex("^[A-Za-z0-9 ]+$");
//check if the course name is invaild or empty
if (!checkName.IsMatch(course_textbox.Text) || course_textbox.ForeColor == Color.Gray)
{
MessageBox.Show("Course name invaild!\nMake sure that the name contains only letters and numbers", "Error"
, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Check if lecturer was chosen
if (LecturerID_combo.SelectedItem == null)
{
MessageBox.Show("You must chose lecturer", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Check if practitioner was chosen
if (practitionerID_combo.SelectedItem == null)
{
MessageBox.Show("You must chose practitioner", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Check if lecture duration was chosen
if (Lectur_duration_combobox.SelectedItem == null)
{
MessageBox.Show("You must choose lecture duration for a course!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Check if some item was selected in the practice/lab duration list
if (Practice_checkbox.Checked && Practice_duration_combobox.SelectedItem == null)
{
MessageBox.Show("Please chose practice duration", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
if (Lab_Checkbox.Checked && lab_duration_combobox.SelectedItem == null)
{
MessageBox.Show("Please chose lab duration", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Check if at least 1 check box is checked
if (!Lab_Checkbox.Checked && !Practice_checkbox.Checked)
{
MessageBox.Show("For a course there must be at least lab and/or practice", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Create new connection to write to database
DataRowView oDataRowView = LecturerID_combo.SelectedItem as DataRowView;
int lecturerID = (int)oDataRowView.Row["ID"];
oDataRowView = practitionerID_combo.SelectedItem as DataRowView;
int practitionerID = (int)oDataRowView.Row["ID"];
//Check if the course exists
if (SqlWorker.checkCourseExistence(course_textbox.Text))
{
MessageBox.Show("The course " + course_textbox.Text + " already exists!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
string practiceDur = null, labDur = null;
//Show confirm message
string messageString = "Are you sure you want to add the following course to the department?"
+ "\nName: " + course_textbox.Text
+ "\nLecturer ID: " + lecturerID.ToString()
+ "\nPractitioner ID: " + practitionerID.ToString()
+ "\nLecutre duration: " + Lectur_duration_combobox.SelectedItem;
if (Practice_checkbox.Checked)
{
messageString += "\nPractice duration: " + Practice_duration_combobox.SelectedItem;
practiceDur = Practice_duration_combobox.SelectedItem.ToString();
}
if (Lab_Checkbox.Checked)
{
messageString += "\nLab duration: " + lab_duration_combobox.SelectedItem;
labDur = lab_duration_combobox.SelectedItem.ToString();
}
DialogResult resault = MessageBox.Show(messageString, "Before you continue", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk);
//If the user click ok, add the course to database
if (resault == DialogResult.OK)
{
SqlWorker.addCourse(course_textbox.Text, lecturerID.ToString(), practitionerID.ToString(),
Lectur_duration_combobox.SelectedItem.ToString(), practiceDur, labDur, checkBox1.Checked);
MessageBox.Show("Course successfully added!", "Success!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
this.Close();
}
}
public void Test_check_course_existence()
{
//Add new course
SqlWorker.addCourse(courseName, lecturerID, practitionerID, LectureDuration, PracticeDuration, LabDuration, true);
Assert.IsTrue(SqlWorker.GetDataSet("select * from Courses where CourseName='" + courseName +
"' and Lecturer=" + lecID + " and practitioner=" + PracID + " and MaxStudent=20 and " +
"LectureDuration=" + LecDuration + " and PracticeDuration=" + PracDuration + " and LabDuration=" + LabDur +
" and Must=" + must).Tables[0].Rows.Count == 1 && SqlWorker.checkCourseExistence(courseName));
SqlWorker.ExecuteQueries("Delete from Courses where CourseName='" + courseName + "'");
}