private bool AddToClasses(FullSailClass course)
{
ListViewItem item = new ListViewItem();
item.Text = course.ToString();
item.Tag = course;
switch (course.Track)
{
case "Central":
item.ImageIndex = 0;
break;
case "iOS":
item.ImageIndex = 1;
break;
case "Android":
item.ImageIndex = 2;
break;
default:
break;
}
lsv_Classes.Items.Add(item);
return(true);
}
private bool FillFields(ListViewItem item)
{
// fill in data from selected index item
FullSailClass course = (FullSailClass)item.Tag;
txt_CName.Text = course.CourseName;
txt_CNumber.Text = course.CourseNumber;
nud_Term.Value = course.Term;
nud_Hours.Value = (decimal)course.CreditHours;
cbx_Track.Text = course.Track;
return(true);
}
private bool UpdateData(FullSailClass course)
{
string stm = "UPDATE Classes " +
"SET CourseName = @CName, CourseNumber = @CNumber, Term = @Term, CreditHours = @CHours, Track = @Track " +
"WHERE ID = @itemId;";
MySqlCommand cmd = new MySqlCommand(stm, conn);
cmd.Parameters.AddWithValue("@itemId", course.ID);
cmd.Parameters.AddWithValue("@CName", course.CourseName);
cmd.Parameters.AddWithValue("@CNumber", course.CourseNumber);
cmd.Parameters.AddWithValue("@Term", course.Term);
cmd.Parameters.AddWithValue("@CHours", course.CreditHours);
cmd.Parameters.AddWithValue("@Track", course.Track);
MySqlDataReader rdr = cmd.ExecuteReader();
rdr.Close();
return(true);
}
//------------------------------------------------------------------------------------
//-------------------------------------MYSQL FUNCS------------------------------------
private bool RetrieveData()
{
// create the SQL statement
string sql = "SELECT * " +
"FROM Classes;";
// create the data adapter
MySqlDataAdapter adr = new MySqlDataAdapter(sql, conn);
// set the type for the SELECT command
adr.SelectCommand.CommandType = CommandType.Text;
// The fill method adds rows to match the data source
adr.Fill(itemData);
// we can also get a couple of the rows
numOfRows = itemData.Select().Length;
// make sure we don't go out of range
while (currentRow < itemData.Rows.Count)
{
// instantiate object to hold data
FullSailClass course = new FullSailClass();
course.ID = int.Parse(itemData.Rows[currentRow]["ID"].ToString());
course.CourseName = itemData.Rows[currentRow]["CourseName"].ToString();
course.CourseNumber = itemData.Rows[currentRow]["CourseNumber"].ToString();
course.Term = int.Parse(itemData.Rows[currentRow]["Term"].ToString());
course.CreditHours = double.Parse(itemData.Rows[currentRow]["CreditHours"].ToString());
course.Track = itemData.Rows[currentRow]["Track"].ToString();
// add to the list
AddToClasses(course);
// advance rows
currentRow++;
}
return(true);
}
// button handles delete and cancel
private void btn_Delete_Click(object sender, EventArgs e)
{
if (btn_Delete.Text == "Cancel")
{
// refill in the feilds with the appropriate data
FillFields(lsv_Classes.Items[0]);
// deactivate fields
txt_CName.Enabled = false;
txt_CNumber.Enabled = false;
nud_Term.Enabled = false;
nud_Hours.Enabled = false;
cbx_Track.Enabled = false;
btn_NewCourse.Enabled = true;
// change buttons to origional purpose
btn_Edit.Text = "Edit";
btn_Delete.Text = "Delete";
}
else
{
// deletes the course from the database
FullSailClass course = (FullSailClass)lsv_Classes.SelectedItems[0].Tag;
string stm = "DELETE FROM Classes " +
"WHERE ID = @itemId;";
MySqlCommand cmd = new MySqlCommand(stm, conn);
cmd.Parameters.AddWithValue("@itemId", course.ID);
MySqlDataReader rdr = cmd.ExecuteReader();
rdr.Close();
// deletes from view list
lsv_Classes.SelectedItems[0].Remove();
// Fill in Fields with first item info
FillFields(lsv_Classes.Items[0]);
}
}
//------------------------------------------------------------------------------------
//-------------------------------------FIELDS FUNCS-----------------------------------
private bool ValidatesTextInputs(FullSailClass course)
{
// if textfields have all whitespace returns null
if (string.IsNullOrWhiteSpace(txt_CName.Text))
{
course.CourseName = null;
}
else
{
course.CourseName = txt_CName.Text;
}
if (string.IsNullOrWhiteSpace(txt_CNumber.Text))
{
course.CourseNumber = null;
}
else
{
course.CourseNumber = txt_CNumber.Text;
}
return(true);
}
// save for a prinatble format in text file
private void tsmi_Save_Click(object sender, EventArgs e)
{
try
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
saveFileDialog1.DefaultExt = ".txt";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
// Code to write the stream goes here.
using (StreamWriter sw = new StreamWriter(saveFileDialog1.FileName))
{
sw.WriteLine("-----Full Sail Classes For Bachelores Of Mobile Development-----");
sw.WriteLine();
sw.WriteLine("-------------------Central------------------");
foreach (ListViewItem item in lsv_Classes.Items)
{
FullSailClass course = (FullSailClass)item.Tag;
if (course.Track == "Central")
{
sw.WriteLine($"\t{course.CourseName}-{course.CourseNumber}:");
sw.WriteLine("Term:".PadRight(15) + course.Term);
sw.WriteLine("Credit Hours:".PadRight(15) + course.CreditHours);
sw.WriteLine("Track:".PadRight(15) + course.Track);
}
}
sw.WriteLine();
sw.WriteLine("-------------------iOS------------------");
foreach (ListViewItem item in lsv_Classes.Items)
{
FullSailClass course = (FullSailClass)item.Tag;
if (course.Track == "iOS")
{
sw.WriteLine($"\t{course.CourseName}-{course.CourseNumber}:");
sw.WriteLine("Term:".PadRight(15) + course.Term);
sw.WriteLine("Credit Hours:".PadRight(15) + course.CreditHours);
sw.WriteLine("Track:".PadRight(15) + course.Track);
}
}
sw.WriteLine();
sw.WriteLine("-------------------Android------------------");
foreach (ListViewItem item in lsv_Classes.Items)
{
FullSailClass course = (FullSailClass)item.Tag;
if (course.Track == "Android")
{
sw.WriteLine($"\t{course.CourseName}-{course.CourseNumber}:");
sw.WriteLine("Term:".PadRight(15) + course.Term);
sw.WriteLine("Credit Hours:".PadRight(15) + course.CreditHours);
sw.WriteLine("Track:".PadRight(15) + course.Track);
}
}
sw.Close();
}
}
}
catch (Exception)
{
MessageBox.Show("Error in Saving Data!");
}
}
//------------------------------------------------------------------------------------
//------------------------------------BUTTON CLICKS-----------------------------------
// button handles edit/save edit/save
private void btn_Edit_Click(object sender, EventArgs e)
{
if (btn_Edit.Text == "Save Edit")
{
// create a new object to hold the new data
FullSailClass updatedCourse = (FullSailClass)lsv_Classes.SelectedItems[0].Tag;
ValidatesTextInputs(updatedCourse);
updatedCourse.Term = int.Parse(nud_Term.Value.ToString());
updatedCourse.CreditHours = double.Parse(nud_Hours.Value.ToString());
updatedCourse.Track = cbx_Track.Text;
try
{
// update the database
UpdateData(updatedCourse);
// equal the new data to the selected items
lsv_Classes.SelectedItems[0].Text = updatedCourse.ToString();
lsv_Classes.SelectedItems[0].Tag = updatedCourse;
// deactivate fields
txt_CName.Enabled = false;
txt_CNumber.Enabled = false;
nud_Term.Enabled = false;
nud_Hours.Enabled = false;
cbx_Track.Enabled = false;
// change buttons to origional purpose
btn_Edit.Text = "Edit";
btn_Delete.Text = "Delete";
btn_NewCourse.Enabled = true;
}
catch (Exception)
{
MessageBox.Show("Do Not Leave Blank");
}
}
else if (btn_Edit.Text == "Add")
{
try
{
// add new info to a new FullSailClass object
FullSailClass course = new FullSailClass();
ValidatesTextInputs(course);
course.Term = (int)nud_Term.Value;
course.CreditHours = (double)nud_Hours.Value;
course.Track = cbx_Track.Text;
// gets the last added item from database and increments its ID for new item
FullSailClass temp = (FullSailClass)lsv_Classes.Items[lsv_Classes.Items.Count - 1].Tag;
course.ID = temp.ID + 1;
// add to the list
AddToClasses(course);
// add to database
string stm = "INSERT INTO Classes(ID, CourseName, CourseNumber, Term, CreditHours, Track) " +
"VALUES(@itemId, @cName, @cNumber, @term, @cHours, @track)";
MySqlCommand cmd = new MySqlCommand(stm, conn);
cmd.Parameters.AddWithValue("@itemId", course.ID);
cmd.Parameters.AddWithValue("@cName", course.CourseName);
cmd.Parameters.AddWithValue("@cNumber", course.CourseNumber);
cmd.Parameters.AddWithValue("@term", course.Term);
cmd.Parameters.AddWithValue("@cHours", course.CreditHours);
cmd.Parameters.AddWithValue("@track", course.Track);
MySqlDataReader rdr = cmd.ExecuteReader();
rdr.Close();
// change buttons to origional purpose
btn_Edit.Text = "Edit";
btn_Delete.Text = "Delete";
}
catch (Exception)
{
MessageBox.Show("Do Not Leave Blank");
}
}
else
{
// enables changes
txt_CName.Enabled = true;
txt_CNumber.Enabled = true;
nud_Term.Enabled = true;
nud_Hours.Enabled = true;
cbx_Track.Enabled = true;
// change names of buttons to change the functionality
btn_Edit.Text = "Save Edit";
btn_Delete.Text = "Cancel";
}
}
