} //End Cell Click Event
private void btnUpdate_Click(object sender, EventArgs e)
{
//Instance of Book
Books aBook = new Books();
//Validate input
//Calling method to check all fields must not be empty
if (!checkEmptyBox())
{
return;
} //End Validate all fields
//Validate ISBN format
if (!BookValidation.isValidISBN(txtISBN.Text))
{
MessageBox.Show("Book ISBN: '" + txtISBN.Text + "' invalid", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtISBN.Text = "";
txtISBN.Focus();
return;
} //End Validate ISBN
//Validate Class No
if (!BookValidation.isValidClassNo(txtClassNo.Text))
{
MessageBox.Show("Class No: '" + txtClassNo.Text + "' invalid format (Format: 005-CAY)", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtClassNo.Text = "";
txtClassNo.Focus();
return;
} //End Validate ClassNo
//Validate Title
if (!BookValidation.isValidTitle(txtTitle.Text))
{
MessageBox.Show("Book Title: '" + txtTitle.Text + "' invalid! Alphanumeric Values Only", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtTitle.Text = "";
txtTitle.Focus();
return;
} //End Validate Title
//Validate Author
if (!BookValidation.isValidAuthor(txtAuthor.Text))
{
MessageBox.Show("Author: '" + txtAuthor.Text + "' invalid! Alphabets Only", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtAuthor.Text = "";
txtAuthor.Focus();
return;
} //End Validate Author
//Validate Price
if (!BookValidation.isValidPrice(txtPrice.Text))
{
MessageBox.Show("Price: '" + txtPrice.Text + "' invalid!", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtPrice.Text = "";
txtPrice.Focus();
return;
} //End Validate Price
//Validate NoPages
if (!BookValidation.isValidNoPages(txtPages.Text))
{
MessageBox.Show("Pages '" + txtPages.Text + "' invalid! Only digits allowed", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtPages.Text = "";
txtPages.Focus();
return;
} //End Validate Pages
//Validate PubName
if (!BookValidation.isValidPubName(txtPName.Text))
{
MessageBox.Show("Publisher Name: '" + txtPName.Text + "' invalid!", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtPName.Text = "";
txtPName.Focus();
return;
} //End Validate PubName
//Validate YearPublish
if (!BookValidation.isValidYearPublished(txtYearPub.Text))
{
MessageBox.Show("Year Published: '" + txtYearPub.Text + "' invalid!", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtYearPub.Text = "";
txtYearPub.Focus();
return;
} //End Validate Year Publish
//Validate Year Range
if (!BookValidation.isValidYearRange(txtYearPub.Text))
{
MessageBox.Show("Invalid Year Entered!", "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
txtYearPub.Text = "";
txtYearPub.Focus();
return;
} //End Validate Year Range
//Update Book Details in Book File
aBook.setBookID(Convert.ToInt32(txtBookID.Text));
aBook.setISBN(txtISBN.Text.Trim());
aBook.setClassNo(txtClassNo.Text.ToString());
//Check if the subject has changed
if (cmbSubject.SelectedItem.Equals(strSubjectName))
{
//No change then get subject code
aBook.setSubjectCode(Books.getSubjectCode(cmbSubject.SelectedItem.ToString()));
}
aBook.setSubjectCode(strSubjectCode);
aBook.setTitle(txtTitle.Text);
aBook.setAuthor(txtAuthor.Text);
aBook.setEdition(Convert.ToInt32(nudEdition.Value));
aBook.setPrice(Convert.ToDouble(txtPrice.Text));
aBook.setPage(Convert.ToInt32(txtPages.Text));
aBook.setPubName(txtPName.Text);
//Check if the country has changed
if (cmbCountry.SelectedItem.Equals(strCountryName))
{
//If no change get country code
aBook.setCountry(Books.getCountryCode(cmbCountry.SelectedItem.ToString()));
}
aBook.setCountry(strCountryCode);
aBook.setYearPub(txtYearPub.Text);
//Update
aBook.updBook();
//Display Confirmation message
MessageBox.Show("Book " + txtBookID.Text + " Details Updated", "Confirmation", MessageBoxButtons.OK, MessageBoxIcon.Information);
//Reset UI
grdBookList.Visible = false;
grpBookInfo.Visible = false;
txtSTitle.Text = "";
txtSTitle.Focus();
} //End Update