private bool learningExperienceFieldsCheck(Learning_Experience expROW)
{
if (expROW == null)
{
//MessageBox.Show("You must first select a valid row before adding, saving, or deleting.",
// "Datagrid Row Selection Error", MessageBoxButton.OK,
// MessageBoxImage.Exclamation);
return(false);
}
else if (expROW.Semester != "Fall" && expROW.Semester != "Jan" && expROW.Semester != "Spring" && expROW.Semester != "")
{
MessageBox.Show("Entry in Semester column invalid. Valid entries are blank, 'Fall', 'Jan', or 'Spring'.",
"Datagrid Row Error", MessageBoxButton.OK,
MessageBoxImage.Exclamation);
return(false);
}
else if (expROW.TypeofLearning != "Discipline-Based" && expROW.TypeofLearning != "Problem-Based" &&
expROW.TypeofLearning != "Pure Service" && expROW.TypeofLearning != "Service Internship" &&
expROW.TypeofLearning != "Community Based Research" && expROW.TypeofLearning != "Capstone Class" &&
expROW.TypeofLearning != "")
{
MessageBox.Show("Entry in Type of Learning column invalid.\n" +
"Valid entries are blank, 'Discipline-Based', 'Problem-Based', 'Pure Service',\n" +
"'Service Internship', 'Community Based Research', or 'Capstone Class'",
"Datagrid Row Error", MessageBoxButton.OK,
MessageBoxImage.Exclamation);
return(false);
}
else if (expROW.Section.Equals(null))
{
MessageBox.Show("Must enter course section!", "Datagrid Row Error", MessageBoxButton.OK,
MessageBoxImage.Exclamation);
}
return(true);
}
private void learningExperienceDelete()
{
if (dbMethods.CheckDatabaseConnection())
{
if (MessageBox.Show("Are you sure you want to delete this learning experience?", "Confirm Delete!", MessageBoxButton.YesNo) ==
MessageBoxResult.Yes)
{
using (PubsDataContext db = new PubsDataContext())
{
Learning_Experience expROW = studentLearningExperiences_DataGrid.SelectedItem as Learning_Experience;
var completionList = new List <Learning_Experience>(from s in db.Learning_Experiences
where s.ID == expROW.ID
select s);
if (expROW != null && completionList.Any())
{
var completion = completionList.First();
db.Learning_Experiences.DeleteOnSubmit(completion);
db.SubmitChanges();
LoadStudentLearningExperiences();
}
else
{
LoadStudentLearningExperiences();
}
}
}
}
}
private void learningExperienceSave()
{
Learning_Experience expROW = studentLearningExperiences_DataGrid.SelectedItem as Learning_Experience;
if (learningExperienceFieldsCheck(expROW))
{
if (dbMethods.CheckDatabaseConnection())
{
using (PubsDataContext db = new PubsDataContext())
{
//Learning_Experience exp = (from s in db.Learning_Experiences
// where s.Student_ID == expROW.Student_ID
// select s);
var completionList = new List <Learning_Experience>(from s in db.Learning_Experiences
where s.ID == expROW.ID
select s);
if (completionList.Count > 0)
{
var completion = completionList.First();
completion.Student_ID = student.Student_ID;
completion.ConfirmedHours = expROW.ConfirmedHours;
completion.CourseNumber = expROW.CourseNumber;
completion.LiabilityWaiver = expROW.LiabilityWaiver;
completion.ProjectAgreement = expROW.ProjectAgreement;
completion.Semester = expROW.Semester;
completion.Year = expROW.Year;
completion.TimeLog = expROW.TimeLog;
completion.TotalHours = expROW.TotalHours;
completion.TypeofLearning = expROW.TypeofLearning;
completion.Section = expROW.Section;
completion.Professor = expROW.Professor;
completion.CourseName = expROW.CourseName;
db.SubmitChanges();
LoadStudentLearningExperiences();
}
else
{
Learning_Experience exp = new Learning_Experience();
exp.Student_ID = student.Student_ID;
exp.ConfirmedHours = expROW.ConfirmedHours;
exp.CourseNumber = expROW.CourseNumber;
exp.LiabilityWaiver = expROW.LiabilityWaiver;
exp.ProjectAgreement = expROW.ProjectAgreement;
exp.Semester = expROW.Semester;
exp.Year = expROW.Year;
exp.TimeLog = expROW.TimeLog;
exp.TotalHours = expROW.TotalHours;
exp.TypeofLearning = expROW.TypeofLearning;
db.Learning_Experiences.InsertOnSubmit(exp);
db.SubmitChanges();
LoadStudentLearningExperiences();
}
}
}
}
}
private void save_BTN_Click(object sender, RoutedEventArgs e)
{
if (dbMethods.CheckDatabaseConnection())
{
using (PubsDataContext db = new PubsDataContext())
{
if (studentID_TB.Text.Length > 0 && graduationYear_TB.Text.Length > 0)
{
var CheckExists = (from s in db.Students
where s.Student_ID == Convert.ToInt32(studentID_TB.Text)
select s);
//if the user does not exists, application will create a new user
if (CheckExists.Count() == 0)
{
student.Student_ID = Convert.ToInt32(studentID_TB.Text);
student.FirstName = studentFirstName_TB.Text;
student.LastName = studentLastName_TB.Text;
student.GraduationYear = Convert.ToInt32(graduationYear_TB.Text);
student.Email = studentemail_TB.Text;
Learning_Experience exp = new Learning_Experience();
exp.Student_ID = Convert.ToInt32(studentID_TB.Text);
db.Students.InsertOnSubmit(student);
db.Learning_Experiences.InsertOnSubmit(exp);
db.SubmitChanges();
LoadStudentLearningExperiences();
}
else
{
//save student info
Student stud = (from s in db.Students
where s.Student_ID == student.Student_ID
select s).Single();
stud.Student_ID = Convert.ToInt32(studentID_TB.Text);
stud.FirstName = studentFirstName_TB.Text;
stud.LastName = studentLastName_TB.Text;
stud.GraduationYear = Convert.ToInt32(graduationYear_TB.Text);
stud.Email = studentemail_TB.Text;
//saves experience by calling the save experiences button event
learningExperienceSave();
db.SubmitChanges();
}
}
else
{
MessageBox.Show(
"SLApp apologizes for the inconvenience, but at this time all fields must contain data before saving.",
"Save Error!", MessageBoxButton.OK, MessageBoxImage.Error);
}
//this.Close();
}
}
}
public void LoadStudentLearningExperiences()
{
if (dbMethods.CheckDatabaseConnection())
{
using (PubsDataContext db = new PubsDataContext())
{
var completionList = new List <Learning_Experience>(from s in db.Learning_Experiences
where s.Student_ID == student.Student_ID
select s);
if (!completionList.Any())
{
Learning_Experience exp = new Learning_Experience();
exp.Student_ID = student.Student_ID;
db.Learning_Experiences.InsertOnSubmit(exp);
db.SubmitChanges();
completionList.Add(exp);
}
studentLearningExperiences_DataGrid.DataContext = completionList;
}
}
}
private bool learningExperienceFieldsCheck(Learning_Experience expROW)
{
if (expROW == null)
{
//MessageBox.Show("You must first select a valid row before adding, saving, or deleting.",
// "Datagrid Row Selection Error", MessageBoxButton.OK,
// MessageBoxImage.Exclamation);
return(false);
}
else if (expROW.Semester != "Fall" && expROW.Semester != "Jan" && expROW.Semester != "Spring" && expROW.Semester != "")
{
MessageBox.Show("Entry in Semester column invalid. Valid entries are blank, 'Fall', 'Jan', or 'Spring'.",
"Datagrid Row Error", MessageBoxButton.OK,
MessageBoxImage.Exclamation);
return(false);
}
else if (expROW.Section.Equals(null))
{
MessageBox.Show("Must enter course section!", "Datagrid Row Error", MessageBoxButton.OK,
MessageBoxImage.Exclamation);
}
return(true);
}
private void Delete_MenuItem_Click(object sender, RoutedEventArgs e)
{
if (dbMethods.CheckDatabaseConnection())
{
if (MessageBox.Show("Are you sure you want to delete this student?", "Confirm Delete!", MessageBoxButton.YesNo) ==
MessageBoxResult.Yes)
{
using (PubsDataContext db = new PubsDataContext())
{
Student studentRow = studentSearch_DataGrid.SelectedItem as Student;
Student stud = (from s in db.Students
where s.Student_ID == studentRow.Student_ID
select s).Single();
Learning_Experience exp = (from ex in db.Learning_Experiences
where ex.Student_ID == stud.Student_ID
select ex).Single();
db.Students.DeleteOnSubmit(stud);
db.Learning_Experiences.DeleteOnSubmit(exp);
db.SubmitChanges();
}
}
}
studentSearch_BTN_Click(sender, e);
}
// When the user edits a row, make sure that the student ID column is auto-populated with the current student id
private void studentLearningExperiences_DataGrid_BeginningEdit(object sender, DataGridBeginningEditEventArgs e)
{
Learning_Experience x = e.Row.Item as Learning_Experience;
x.Student_ID = student.Student_ID;
}
private void save_BTN_Click(object sender, RoutedEventArgs e)
{
if (dbMethods.CheckDatabaseConnection())
{
using (PubsDataContext db = new PubsDataContext())
{
if (studentID_TB.Text.Length > 0 && graduationYear_TB.Text.Length > 0)
{
// if there's a problem with the student ID, exit function
if (!student_ID_IntCheck(studentID_TB.Text))
{
return;
}
// if there's a problem with the student's grad year year, exit function
if (!studentGradYearIntCheck(graduationYear_TB.Text))
{
return;
}
var CheckExists = (from s in db.Students
where s.Student_ID == Convert.ToInt32(studentID_TB.Text)
select s);
//if the user does not exist, application will create a new user
if (CheckExists.Count() == 0)
{
student.Student_ID = Convert.ToInt32(studentID_TB.Text);
student.FirstName = studentFirstName_TB.Text;
student.LastName = studentLastName_TB.Text;
student.GraduationYear = Convert.ToInt32(graduationYear_TB.Text);
student.Email = studentemail_TB.Text;
Learning_Experience exp = new Learning_Experience();
exp.Student_ID = Convert.ToInt32(studentID_TB.Text);
db.Students.InsertOnSubmit(student);
db.Learning_Experiences.InsertOnSubmit(exp);
db.SubmitChanges();
LoadStudentLearningExperiences();
}
else //if the student ID is found in the database
{
//save student info after checking that the user did not accidentally change information
Student stud = (from s in db.Students
where s.Student_ID == Convert.ToInt32(studentID_TB.Text)
select s).Single();
//Create a shallow copy to see if indentification info changes
Student studCopy = new Student();
studCopy.Student_ID = stud.Student_ID;
studCopy.FirstName = stud.FirstName;
studCopy.LastName = stud.LastName;
studCopy.GraduationYear = stud.GraduationYear;
studCopy.Email = stud.Email;
//Update student information using input fields
stud.Student_ID = Convert.ToInt32(studentID_TB.Text);
stud.FirstName = studentFirstName_TB.Text;
stud.LastName = studentLastName_TB.Text;
stud.GraduationYear = Convert.ToInt32(graduationYear_TB.Text);
stud.Email = studentemail_TB.Text;
//If the user has changed the basic information in the student profile, make sure
// that was intentional before updating.
if (!(studCopy.Student_ID == stud.Student_ID &&
studCopy.FirstName == stud.FirstName &&
studCopy.LastName == stud.LastName &&
studCopy.GraduationYear == stud.GraduationYear &&
studCopy.Email == stud.Email))
{
bool check = overwriteCheck(studCopy);
if (!check) //If it was a mistake, don't save changes
{
return;
}
}
student = stud; // fills in this window's student information
//saves experience by calling the save experiences button event
learningExperienceSave();
db.SubmitChanges();
LoadStudentLearningExperiences(); // reloads student information into the window
}
}
else
{
MessageBox.Show(
"SLApp apologizes for the inconvenience, but at this time all fields must contain data before saving.",
"Save Error!", MessageBoxButton.OK, MessageBoxImage.Error);
}
//this.Close();
}
}
}