public static bool insert(Registration_and_Marks reg_and_marks)
{
OleDbConnection connection = new OleDbConnection(global::ResultManagement.Properties.Settings.Default.ConnectionString);
string cmdStr = @"INSERT INTO Registration_AND_Marks
(Reg_Sess_ID, Course_ID, is_Retake)
VALUES
(@Reg_Sess_ID, @Course_ID, @is_Retake)";
OleDbCommand cmd = new OleDbCommand(cmdStr, connection);
cmd.Parameters.Add("@Reg_Sess_ID", OleDbType.Integer).Value = reg_and_marks.Registered_Session_ID;
cmd.Parameters.Add("@Course_ID", OleDbType.Integer).Value = reg_and_marks.Course.ID;
cmd.Parameters.Add("@is_Retake", OleDbType.Boolean).Value = reg_and_marks.Marks.IsRetake;
bool successful = false;
try
{
connection.Open();
cmd.ExecuteNonQuery();
successful = true;
}
finally
{
connection.Close();
}
return successful;
}
public static bool delete(Registration_and_Marks reg_and_marks)
{
OleDbConnection connection = new OleDbConnection(global::ResultManagement.Properties.Settings.Default.ConnectionString);
string cmdStr = @"DELETE FROM Registration_and_Marks
WHERE 0 ";
/*if (reg_and_marks.marks.MarksID != null)
{
cmdStr += @"OR ID = " + reg_and_marks.marks.MarksID;
}*/
if (reg_and_marks.Registered_Session_ID != null && reg_and_marks.course.ID != null)
{
cmdStr += " OR (reg_sess_ID = " + reg_and_marks.Registered_Session_ID
+ @" AND course_ID = " + reg_and_marks.course.ID + ")";
}
OleDbCommand cmd = new OleDbCommand(cmdStr, connection);
bool successful = false;
try
{
connection.Open();
cmd.ExecuteNonQuery();
successful = true;
}
finally
{
connection.Close();
}
return successful;
}
public static List<Registration_and_Marks> getAllRegistrationList(int? sessionID, string batch, int? year, int? term, int? courseID, int? stdID)
{
OleDbConnection connection = new OleDbConnection(global::ResultManagement.Properties.Settings.Default.ConnectionString);
/*string cmdStr = @"SELECT
[session].ID as SessionID, [session].sessionName,
Student.ID as StdID, Student.Batch, Student.Roll, Student.St_Name,
Registered_Session.ID as registered_session_ID, Registered_Session.Reg_Year, Registered_Session.Reg_Term,
Registration_and_Marks.ID as MarksID, Registration_and_Marks.is_Retake, Registration_and_Marks.Attendence,
Registration_and_Marks.CT_or_Viva,Registration_and_Marks.SA_or_SecA, Registration_and_Marks.SecB,
Course.ID as CourseID, Course.Course_Prefix, Course.Course_Year, Course.Course_Term,
Course.Course_No, Course.Credit, Course.Title, Course.is_Optional
FROM [Session],Student,Registered_Session,Registration_and_Marks,Course
WHERE
[Session].ID = Registered_Session.Sess_ID AND
Student.ID = Registered_Session.Std_ID AND
Registered_Session.ID = Registration_and_Marks.Reg_Sess_ID AND
Registration_and_Marks.Course_ID = Course.ID";*/
string cmdStr = @"SELECT
SessionID, sessionName,
StdID, Batch, Roll, St_Name,
registered_session_ID, Reg_Year, Reg_Term,
MarksID, is_Retake, Attendence,CT_or_Viva,SA_or_SecA, SecB,
CourseID, Course_Prefix, Course_Year, Course_Term,Course_No,Credit, Title, is_Optional
FROM
(SELECT [session].ID as SessionID, [session].sessionName,
Student.ID as StdID, Student.Batch, Student.Roll, Student.St_Name,
Registered_Session.ID as registered_session_ID, Registered_Session.Reg_Year, Registered_Session.Reg_Term
FROM Student INNER JOIN
([Session] INNER JOIN Registered_Session ON
[Session].ID=Registered_Session.Sess_ID) ON
Student.ID=Registered_Session.Std_ID) AS T1
LEFT JOIN
(SELECT Registration_and_Marks.ID as MarksID, Registration_and_Marks.Reg_Sess_ID, Registration_and_Marks.is_Retake, Registration_and_Marks.Attendence,
Registration_and_Marks.CT_or_Viva,Registration_and_Marks.SA_or_SecA, Registration_and_Marks.SecB,
Course.ID as CourseID, Course.Course_Prefix, Course.Course_Year, Course.Course_Term,
Course.Course_No, Course.Credit, Course.Title, Course.is_Optional
FROM Course INNER JOIN
Registration_and_Marks ON
Course.ID=Registration_and_Marks.Course_ID) AS T2
ON T1.registered_session_ID=T2.Reg_Sess_ID
WHERE 1 ";
if (sessionID != null)
{
cmdStr += @" AND SessionID = " + sessionID;
}
if (batch != null)
{
cmdStr += @" AND Batch = '" + batch + "'";
}
if (year != null)
{
cmdStr += @" AND Reg_Year = " + year;
}
if (term != null)
{
cmdStr += @" AND Reg_Term = " + term;
}
if(courseID != null)
{
cmdStr += @" AND CourseID = " + courseID;
}
if (stdID != null)
{
cmdStr += @" AND StdID = " + stdID;
}
cmdStr += @" ORDER BY registered_session_ID, StdID, reg_year, reg_term, course_year desc, course_term desc, course_no, course_prefix";
OleDbCommand cmd = new OleDbCommand(cmdStr, connection);
List<Registration_and_Marks> registration_and_MarksList = new List<Registration_and_Marks>();
try
{
connection.Open();
OleDbDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Registration_and_Marks regisTration_and_Marks = new Registration_and_Marks();
regisTration_and_Marks.Registered_Session_ID = (int)reader.GetValue(reader.GetOrdinal("registered_session_ID"));
regisTration_and_Marks.Reg_Year = (int)reader.GetValue(reader.GetOrdinal("Reg_Year"));
regisTration_and_Marks.Reg_Term = (int)reader.GetValue(reader.GetOrdinal("Reg_Term"));
Session session = new Session();
session.SessionID = (int)reader.GetValue(reader.GetOrdinal("SessionID"));
session.SessionName = (string)reader.GetValue(reader.GetOrdinal("SessionName"));
regisTration_and_Marks.Session = session;
Student student = new Student();
student.Batch = (string)reader.GetValue(reader.GetOrdinal("Batch"));
student.StudentId = (int)reader.GetValue(reader.GetOrdinal("StdID"));
student.Roll = (string)reader.GetValue(reader.GetOrdinal("Roll"));
student.Name = (string)reader.GetValue(reader.GetOrdinal("St_Name"));
regisTration_and_Marks.Student = student;
Course course = new Course();
try
{
course.ID = (int?)reader.GetValue(reader.GetOrdinal("CourseID"));
course.Prefix = (string)reader.GetValue(reader.GetOrdinal("Course_Prefix"));
course.Year = (int?)reader.GetValue(reader.GetOrdinal("Course_Year"));
course.Term = (int?)reader.GetValue(reader.GetOrdinal("Course_Term"));
course.Course_No = (string)reader.GetValue(reader.GetOrdinal("Course_No"));
course.Credit = (decimal?)reader.GetValue(reader.GetOrdinal("Credit"));
course.Title = (string)reader.GetValue(reader.GetOrdinal("Title"));
course.Is_Optional = (bool?)reader.GetValue(reader.GetOrdinal("is_Optional"));
regisTration_and_Marks.Course = course;
}
catch { }
Marks marks = new Marks();
try
{
marks.MarksID = (int?)reader.GetValue(reader.GetOrdinal("MarksID"));
marks.IsRetake = (bool?)reader.GetValue(reader.GetOrdinal("is_Retake"));
marks.Attendence = (int?)reader.GetValue(reader.GetOrdinal("Attendence"));
marks.Ct_or_Viva = (int?)reader.GetValue(reader.GetOrdinal("CT_or_Viva"));
marks.SA_or_SecA = (int?)reader.GetValue(reader.GetOrdinal("SA_or_SecA"));
marks.SecB = (int?)reader.GetValue(reader.GetOrdinal("SecB"));
regisTration_and_Marks.Marks = marks;
}
catch { }
registration_and_MarksList.Add(regisTration_and_Marks);
}
}
finally
{
connection.Close();
}
return registration_and_MarksList;
}
public static bool Update(Registration_and_Marks reg_and_marks)
{
OleDbConnection connection = new OleDbConnection(global::ResultManagement.Properties.Settings.Default.ConnectionString);
string cmdStr = @"UPDATE Registration_and_Marks
SET
is_retake = @is_retake,
Attendence = @attndence,
ct_or_viva = @ct_or_viva,
sa_or_secA = @sa_or_secA,
secB = @secB
WHERE 0 ";
/*if (reg_and_marks.marks.MarksID != null)
{
cmdStr += @"OR ID = " + reg_and_marks.marks.MarksID;
}*/
if (reg_and_marks.Registered_Session_ID != null && reg_and_marks.course.ID != null)
{
cmdStr += @" OR (reg_sess_ID = " + reg_and_marks.Registered_Session_ID
+ @" AND course_ID = " + reg_and_marks.course.ID + ")";
}
OleDbCommand cmd = new OleDbCommand(cmdStr, connection);
cmd.Parameters.Add("@is_retake", OleDbType.Boolean).Value = reg_and_marks.marks.IsRetake;
cmd.Parameters.Add("@attndence", OleDbType.Integer).Value = reg_and_marks.marks.Attendence;
cmd.Parameters.Add("@ct_or_viva", OleDbType.Integer).Value = reg_and_marks.marks.Ct_or_Viva;
cmd.Parameters.Add("@sa_or_secA", OleDbType.Integer).Value = reg_and_marks.marks.SA_or_SecA;
cmd.Parameters.Add("@secB", OleDbType.Integer).Value = reg_and_marks.marks.SecB;
bool successful = false;
try
{
connection.Open();
cmd.ExecuteNonQuery();
successful = true;
}
finally
{
connection.Close();
}
return successful;
}
private void InsertButton_Click(object sender, EventArgs e)
{
if (RollTextBox.Text.Length != 6)
{
MessageBox.Show("Invalid Student ID");
return;
}
if (InsertButton.Text == "Save") //insert
{
RegisteredCoursesAgainstSingleStudent registeredCoursesAgainstSingleStudent = new RegisteredCoursesAgainstSingleStudent();
registeredCoursesAgainstSingleStudent.Session.SessionID = (int)this.SessionComboBox.SelectedValue;
registeredCoursesAgainstSingleStudent.Year.YearID = (int)this.YearComboBox.SelectedValue;
registeredCoursesAgainstSingleStudent.Term.TermID = (int)this.TermComboBox.SelectedValue;
registeredCoursesAgainstSingleStudent.Student = Student.getStudent(RollTextBox.Text);
this.sessionID = registeredCoursesAgainstSingleStudent.Session.SessionID;
this.year = registeredCoursesAgainstSingleStudent.Year.YearID;
this.term = registeredCoursesAgainstSingleStudent.Term.TermID;
this.stdID = registeredCoursesAgainstSingleStudent.Student.StudentId;
List<Registration_and_Marks> courseList = new List<Registration_and_Marks>();
for(int i=0;i<TakenCoursesDataGridView.RowCount;i++)
{
if ((UpdateType)TakenCoursesDataGridView.Rows[i].Tag == UpdateType.Delete)
{
TakenCoursesDataGridView.Rows.RemoveAt(i);
i--;
}
else
{
Registration_and_Marks registration_and_Marks = new Registration_and_Marks();
registration_and_Marks.Course.ID = (int)TakenCoursesDataGridView["TakenCoursesCourseIDColumn", i].Value;
registration_and_Marks.Marks.IsRetake = (bool)TakenCoursesDataGridView["TakenCoursesIsRetakeColumn", i].Value;
courseList.Add(registration_and_Marks);
TakenCoursesDataGridView.Rows[i].Tag = UpdateType.None;
}
}
registeredCoursesAgainstSingleStudent.CourseList = courseList;
Registered_Session_ID = registeredCoursesAgainstSingleStudent.insert();
MessageBox.Show("Inserted Successfully");
InsertButton.Text = "Update";
CheckRegistrationLabel.Text = registeredCoursesAgainstSingleStudent.Student.Name;
SessionComboBox.Enabled = false;
YearComboBox.Enabled = false;
TermComboBox.Enabled = false;
RollTextBox.Enabled = false;
registeredCourseList = RegisteredCoursesAgainstSingleStudent.getCourseList((int?)sessionID, (int?)year, (int?)term, (int?)stdID);
}
else //update
{
if (Registered_Session_ID != null)
{
int updateFailureCounter = 0;
int deleteFailureCounter = 0;
int insertFailureCounter = 0;
for (int i = 0; i < TakenCoursesDataGridView.RowCount; i++)
{
if ((UpdateType)TakenCoursesDataGridView.Rows[i].Tag != UpdateType.None)
{
Registration_and_Marks reg_and_marks = null;
for (int j = 0; j < registeredCourseList.Count; j++)
{
if (registeredCourseList[j].Registered_Session_ID == Registered_Session_ID
&& registeredCourseList[j].Course.ID == (int?)TakenCoursesDataGridView["TakenCoursesCourseIDColumn", i].Value)
{
reg_and_marks = registeredCourseList[j];
}
}
//reg_and_marks.Registered_Session_ID = Registered_Session_ID;
//reg_and_marks.Course.ID = (int?)TakenCoursesDataGridView["TakenCoursesCourseIDColumn", i].Value;
if (reg_and_marks == null)
{
reg_and_marks = new Registration_and_Marks();
reg_and_marks.Registered_Session_ID = Registered_Session_ID;
//reg_and_marks.Reg_Year = this.year;
//reg_and_marks.Reg_Term = this.term;
//reg_and_marks.Course = new Course();
reg_and_marks.Course.ID = (int)TakenCoursesDataGridView["TakenCoursesCourseIDColumn", i].Value;
}
reg_and_marks.Marks.IsRetake = (bool?)TakenCoursesDataGridView["TakenCoursesIsRetakeColumn", i].Value;
if ((UpdateType)TakenCoursesDataGridView.Rows[i].Tag == UpdateType.Update)
{
if (Registration_and_Marks.Update(reg_and_marks))
TakenCoursesDataGridView.Rows[i].Tag = UpdateType.None;
else
updateFailureCounter++;
}
else if ((UpdateType)TakenCoursesDataGridView.Rows[i].Tag == UpdateType.Delete)
{
if (Registration_and_Marks.delete(reg_and_marks))
{
TakenCoursesDataGridView.Rows.RemoveAt(i);
i--;
}
else
deleteFailureCounter++;
}
else if ((UpdateType)TakenCoursesDataGridView.Rows[i].Tag == UpdateType.Insert)
{
if (Registration_and_Marks.insert(reg_and_marks))
TakenCoursesDataGridView.Rows[i].Tag = UpdateType.None;
else
insertFailureCounter++;
}
}
}
if (updateFailureCounter == 0 && deleteFailureCounter == 0 && insertFailureCounter == 0)
MessageBox.Show("Updated Successfully");
else
MessageBox.Show((updateFailureCounter + deleteFailureCounter + insertFailureCounter) + " rows failed to update");
}
}
}