/********************************************************************
* Event handler for the File>Save menu item
* will take the records that are currently being accessed and write them
* to the file with the name of the media.
**********************************************************************/
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
//Gets the active child form to determine if it is already opened or not
RecordsForm R = this.ActiveMdiChild as RecordsForm;
if (R == null)
{
MessageBox.Show("No form is currently displayed.", "Error");
}
//Since there is a form open, we can now write the records to a file
else
{
//Define variables needed for writing
string file;
media = R.getMedia();
file = media + ".inv";
Records = R.getRecords();
//Write to file
write = new FileStream(file, FileMode.OpenOrCreate, FileAccess.Write);
if (Records.Count > 0)
{
bf.Serialize(write, Records);
}
write.Close();
MessageBox.Show("Records have been saved to " + file, "Done!");
}
}
/********************************************************************
* Loads the records into the Records variable. Does not return or require any variables
* Using FileStream and BinaryFormatter, this function reads from the specified file
* and loads the records from that file into the Records variable where they
* can then be used throughout the program.
**********************************************************************/
private void loadRecords()
{
//Gets the active child form to determine if it is already opened or not
RecordsForm R = this.ActiveMdiChild as RecordsForm;
int numChildren = this.MdiChildren.Length;
if (R != null || numChildren == 2)
{
MessageBox.Show("Only one form at a time, please.", "Error");
}
//Since it is not already openened, the function will read the records from the file and
// display them on a new RecordsForm
else
{
//Shows a new records form (blank)
R = new RecordsForm(Records, media);
R.MdiParent = this;
R.Show();
//Determines which media we are wanting and reads form the corresponding file
string file = R.getMedia() + ".inv";
Records.Clear(); //Clears the records in case we are using a different media
read = new FileStream(file, FileMode.OpenOrCreate, FileAccess.Read);
if (read.Length > 0)
{
Records = bf.Deserialize(read) as List <Record>;
}
//Calls the refresh function which displays the records on the RecordsForm
R.refresh(Records);
read.Close();
}
}
private void updateToolStripMenuItem_Click(object sender, EventArgs e)
{
RecordsForm R = this.ActiveMdiChild as RecordsForm;
List <int> selected = new List <int>();
if (R == null)
{
MessageBox.Show("You need an active form to update records.", "Error");
}
else
{
Records = R.getRecords();
selected = R.findIndex();
foreach (int index in selected.OrderByDescending(i => i))
{
if (index > 1)
{
InsertForm I = new InsertForm(media);
I.setText(Records[index - 2]);
I.ShowDialog();
if (I.canceled == false && I.mismatch == false)
{
List <Record> temp = I.getRecs();
Records[index - 2] = temp[0];
MessageBox.Show("Record has successfully been updated.", "Done!");
}
R.refresh(Records);
}
}
}
}
/*********************************************************************************
* Event Handler for the Edit>Insert menu item
* will allow the user to insert(Add) records to the list of records
*
*********************************************************************************/
private void insertToolStripMenuItem_Click(object sender, EventArgs e)
{
//Checks to make sure a form is available
RecordsForm R = this.ActiveMdiChild as RecordsForm;
if (R == null)
{
MessageBox.Show("No form available.", "Error");
}
//Since ther is an active form, we can now insert to the list
else
{
//Gets the records that are already displayed on the Records Form
Records = R.getRecords();
//Creates and displays an insert form, which allows the user to enter record data
InsertForm I = new InsertForm(media);
I.ShowDialog();
//If the user pressed cancel instead of ok on the insert form, we will not add data.
//In the insert method, mismatch is set to true if the number of titles, ratings, released are not consistent.
// so if mismatch is true, nothing will be added to the list
if (I.canceled == false && I.mismatch == false)
{
//Gets the list of records created from the InsertForm(list is used for several
// entries with common author/director) and adds them to the records we recieved
// from the RecordsForm a few instructions ago.
Records.AddRange(I.getRecs());
R.refresh(Records); //Refresh method displays the new list of records to the RecordsForm
MessageBox.Show("Record has successfully been added.", "Done!");
}
}
}
private void deleteToolStripMenuItem1_Click(object sender, EventArgs e)
{
RecordsForm R = this.ActiveMdiChild as RecordsForm;
List <int> selected = new List <int>();
bool deleted = false;
DialogResult prompt;
if (R == null)
{
MessageBox.Show("You need an active form to delete records.", "Error");
}
else
{
prompt = MessageBox.Show("Are you sure you would like to permanently delete these records?",
"Delete?", MessageBoxButtons.YesNo);
if (prompt == DialogResult.Yes)
{
Records = R.getRecords();
selected = R.findIndex();
foreach (int index in selected.OrderByDescending(i => i))
{
if (index > 1)
{
Records.RemoveAt(index - 2);
R.refresh(Records);
deleted = true;
}
}
if (deleted)
{
MessageBox.Show("Record has successfully been removed from your library.", "Done!");
}
else
{
MessageBox.Show("Please make a proper selection before deleting", "Error");
}
}
else
{
MessageBox.Show("Records were NOT deleted!", "Done!");
}
}
}
