/*
Function name: saveButton_Click
Version: 1
Author: Christopher Sigouin
Description:
Inputs:
Outputs:
Return value: N/A
Change History: 2015.11.17 Original version by CJS
*/
private void saveButton_Click(object sender, EventArgs e)
{
// Check to see if there is an ISBN listed to complete the save
if (isbnTextBox.Text == "")
{
MessageBox.Show("There is nothing to save. Reverting to 'Select Mode'");
}
// Create 'Book' object and grab data
Book book = new Book();
book.Isbn = isbnTextBox.Text;
book.Title = titleTextBox.Text;
book.Author = authorTextBox.Text;
book.Publisher = publisherTextBox.Text;
book.SubjectCode = subjectTextBox.Text;
book.ShelfLocation = shelfTextBox.Text;
book.Fiction = fictionCheckBox.Checked;
Console.Write(bookHandler.Mode);
// Change save type based on state of the application
switch (bookHandler.Mode)
{
case BookHandler.Modes.AddMode:
Console.Write("\nCurrent Mode: " + bookHandler.Mode + "\n");
bookHandler.Add(book);
break;
case BookHandler.Modes.EditMode:
Console.Write("\nCurrent Mode: " + bookHandler.Mode + "\n");
bookHandler.Update(book);
break;
}
// Reload the ComboBox
bookTitleComboBox.Items.Clear();
bookHandler.initializeComboBox(bookTitleComboBox);
// Set to default state
resetToSelectMode();
// Console check for current mode
Console.Write("\nCurrent Mode: " + bookHandler.Mode + "\n");
}
public void Update(Book book)
{
BookDAO.Update(book);
}
public void Add(Book book)
{
BookDAO.Add(book);
}
/*
Function name: showBookDetails
Version: 1
Author: Christopher Sigouin
Description: Pulls the details of the selected book
Inputs: String isbn
Outputs: Book
Return value: N/A
Change History: 2015.11.23 Original version by CJS
*/
public static Book showBookDetails(String isbn)
{
Book book = new Book();
try
{
OpenConn();
string query = "select * from " + booksTable +
" where " + BookDAO.isbn + " = " + "'" + isbn + "'";
OleDbCommand cmd = new OleDbCommand(query, Conn);
OleDbDataReader reader = cmd.ExecuteReader();
// Add each item to an array of type 'ComboBoxItem'
Console.Write(query);
while (reader.Read())
{
book.Isbn = reader.GetString(0);
book.Title = reader.GetString(1);
book.Author = reader.GetString(2);
book.Publisher = reader.GetString(3);
book.SubjectCode = reader.GetString(4);
book.ShelfLocation = reader.GetString(5);
book.Fiction = reader.GetBoolean(6);
}
// Close connections
reader.Close();
Conn.Close();
}
catch (Exception ex)
{
Console.Write("\nBookDAO Exception - showBookDetails - Message:\n" + ex.Message);
}
return book;
}
/*
Function name: BuildAddQuery
Version: 1
Author: Christopher Sigouin
Description: Builds the query for an ADD SQL statement
Inputs:
Outputs:
Return value: N/A
Change History: 2015.11.23 Original version by CJS
*/
private static String BuildAddQuery(Book book)
{
strTable = "\nInsert into " + booksTable;
strFields = " (" + isbn +
"," + title +
"," + author +
"," + publisher +
"," + subjectCode +
"," + shelfLocation +
"," + fiction + ")";
strValues = " Values ( '" + book.Isbn +
"' , '" + book.Title +
"' , '" + book.Author +
"' , '" + book.Publisher +
"' , '" + book.SubjectCode +
"' , '" + book.ShelfLocation +
"' , " + book.Fiction + " )\n";
insertStr = strTable + strFields + strValues;
Console.Write("BuildAddQuery SQL => " + insertStr);
return insertStr;
}
/*
Function name: BuildUpdateQuery
Version: 1
Author: Christopher Sigouin
Description: Builds the query for an UPDATE SQL statement
Inputs:
Outputs:
Return value: N/A
Change History: 2015.11.23 Original version by CJS
*/
private static String BuildUpdateQuery(Book book)
{
strTable = "\nUpdate " + booksTable;
strFields = " Set " +
title + "=" + "'" + book.Title + "'" + "," +
author + "=" + "'" + book.Author + "'" + "," +
publisher + "=" + "'" + book.Publisher + "'" + "," +
subjectCode + "=" + "'" + book.SubjectCode + "'" + "," +
shelfLocation + "=" + "'" + book.ShelfLocation + "'" + "," +
fiction + "=" + "" + book.Fiction + "" +
" Where (" + isbn +
"='" + book.Isbn + "');\n";
insertStr = strTable + strFields;
Console.Write("BuildUpdateQuery SQL => " + insertStr);
return insertStr;
}
/*
Function name: Update
Version: 1
Author: Christopher Sigouin
Description: Completes the functionality of updating a record in the database
Inputs:
Outputs:
Return value: N/A
Change History: 2015.11.23 Original version by CJS
*/
public static void Update(Book book)
{
try
{
String Str = BuildUpdateQuery(book);
OpenConn();
OleDbCommand cmd = new OleDbCommand(Str, Conn);
cmd.ExecuteNonQuery();
CloseConn();
}
catch (Exception ex)
{
Console.Write("\nBookDAO Exception - Update - Message:\n" + ex.Message);
}
}
/*
Function name: Add
Version: 1
Author: Christopher Sigouin
Description: Completes the functionality of adding a record to the database
Inputs:
Outputs:
Return value: N/A
Change History: 2015.11.23 Original version by CJS
*/
public static void Add(Book book)
{
try
{
String Str = BuildAddQuery(book);
OpenConn();
// Str is the SQL. Conn is the connection
OleDbCommand cmd = new OleDbCommand(Str, Conn);
cmd.ExecuteNonQuery();
CloseConn();
}
catch (Exception ex)
{
Console.Write("\nBookDAO Exception - Add - Message:\n" + ex.Message);
}
}