//Create object Book
private Book createBook()
{
Book abook = new Book();
abook.BkISBN = Convert.ToInt64(textBoxBkISBN.Text);
abook.BkTitle = textBoxBktitle.Text;
abook.BkQOH = Convert.ToInt32(textBoxBkQOH.Text);
abook.BkDate = dateTimePickerBook.Value;
abook.BkAuthor = AuthorDA.SearchID(Convert.ToInt32(textBoxBkAuthorID.Text));
abook.BkCategory = textBoxBkCategory.Text;
abook.BkUnitPrice = Convert.ToDecimal(textBoxBkUP.Text);
abook.BkPublisher = comboBoxBkPub.Text;
return(abook);
}
//Enable the buttons delete and update in case of a valid entered ID
private void textBoxAutID_TextChanged(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(textBoxAutID.Text))
{
buttonAutDel.Enabled = false;
buttonAutUpd.Enabled = false;
return;
}
if (AuthorDA.SearchID(Convert.ToInt32(textBoxAutID.Text)) != null)
{
buttonAutDel.Enabled = true;
buttonAutUpd.Enabled = true;
return;
}
buttonAutDel.Enabled = false;
buttonAutUpd.Enabled = false;
}
//Search
private void buttonAutSearch_Click(object sender, EventArgs e)
{
Author aAuthor = new Author();
if (!string.IsNullOrEmpty(textBoxAutSearch.Text))
{
switch (comboBoxAutSearch.SelectedIndex)
{
case -1:
MessageBox.Show("Please select a valid search option!");
return;
case 0:
int tempId;
if (!int.TryParse(textBoxAutSearch.Text, out tempId))
{
MessageBox.Show("Please enter a valid term to be searched.", "No search information!");
return;
}
aAuthor = AuthorDA.SearchID(Convert.ToInt32(textBoxAutSearch.Text));
break;
case 1:
aAuthor = AuthorDA.SearchFirst(textBoxAutSearch.Text);
break;
case 2:
aAuthor = AuthorDA.SearchLast(textBoxAutSearch.Text);
break;
}
if (aAuthor == null)
{
MessageBox.Show("Author not found!", "Not found!");
textBoxAutSearch.Clear();
textBoxAutSearch.Focus();
return;
}
AuthorDA.ListSearchResult(aAuthor, listViewAuthor);
return;
}
MessageBox.Show("Please enter a valid term to be searched.", "No search information!");
return;
}