}//BooKsDelete
// user defined functions
void DeleteBookByID()
{
if (CheckIfBookExists())
{
try
{
SqlConnection con = new SqlConnection(strcon);
if (con.State == ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("DELETE from tbl_book WHERE book_id='" + BooksID.Text.Trim() + "'", con);
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script>alert('" + BooksName.Text.Trim() + "' + ' is successfully deleted.' ); </script>");
GridBooKs.DataBind();
ClearForm();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
else
{
Response.Write("<script>alert('Invalid Book ID');</script>");
}
}//DeleteByID
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
FillAuthorPublisherValues();
}
GridBooKs.DataBind();
}//PageLoad
}//CheckBool
void AddNewBook()
{
try
{
string genres = "";
foreach (int i in ListBoxGenre.GetSelectedIndices())
{
genres = genres + ListBoxGenre.Items[i] + ",";
}
// genres = Adventure,Self Help,
genres = genres.Remove(genres.Length - 1);
string filepath = "~/book_inventory/bookinventory.jpg";
string filename = Path.GetFileName(FileUploadBooK.PostedFile.FileName);
FileUploadBooK.SaveAs(Server.MapPath("book_inventory/" + filename));
filepath = "~/book_inventory/" + filename;
SqlConnection con = new SqlConnection(strcon);
if (con.State == ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("INSERT INTO tbl_book(book_id,book_name,genre,author_name,publisher_name,publish_date,language,edition,book_cost,no_of_pages,book_description,actual_stock,current_stock,book_img_link) values(@book_id,@book_name,@genre,@author_name,@publisher_name,@publish_date,@language,@edition,@book_cost,@no_of_pages,@book_description,@actual_stock,@current_stock,@book_img_link)", con);
cmd.Parameters.AddWithValue("@book_id", BooksID.Text.Trim());
cmd.Parameters.AddWithValue("@book_name", BooksName.Text.Trim());
cmd.Parameters.AddWithValue("@genre", genres);
cmd.Parameters.AddWithValue("@author_name", DropDownAuthor.SelectedItem.Value);
cmd.Parameters.AddWithValue("@publisher_name", DropDownPublisher.SelectedItem.Value);
cmd.Parameters.AddWithValue("@publish_date", PublishDate.Text.Trim());
cmd.Parameters.AddWithValue("@language", DropDownLanguage.SelectedItem.Value);
cmd.Parameters.AddWithValue("@edition", BooKsEdition.Text.Trim());
cmd.Parameters.AddWithValue("@book_cost", BooKsCost.Text.Trim());
cmd.Parameters.AddWithValue("@no_of_pages", BooKsPages.Text.Trim());
cmd.Parameters.AddWithValue("@book_description", BooKsDescription.Text.Trim());
cmd.Parameters.AddWithValue("@actual_stock", BooKsActualStock.Text.Trim());
cmd.Parameters.AddWithValue("@current_stock", BooKsActualStock.Text.Trim());
cmd.Parameters.AddWithValue("@book_img_link", filepath);
cmd.ExecuteNonQuery();
con.Close();
Response.Write("<script>alert('Book added successfully.');</script>");
GridBooKs.DataBind();
ClearForm();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}//AddNewBook
}//DeleteByID
void UpdateBookByID()
{
if (CheckIfBookExists())
{
try
{
int actual_stock = Convert.ToInt32(BooKsActualStock.Text.Trim());
int current_stock = Convert.ToInt32(BooKsCurrentStock.Text.Trim());
if (global_actual_stock == actual_stock)
{
}
else
{
if (actual_stock < global_issued_books)
{
Response.Write("<script>alert('Actual Stock value cannot be less than the Issued books');</script>");
return;
}
else
{
current_stock = actual_stock - global_issued_books;
BooKsCurrentStock.Text = "" + current_stock;
}
}
string genres = "";
foreach (int i in ListBoxGenre.GetSelectedIndices())
{
genres = genres + ListBoxGenre.Items[i] + ",";
}
genres = genres.Remove(genres.Length - 1);
string filepath = "~/book_inventory/bookinventory.jpg";
string filename = Path.GetFileName(FileUploadBooK.PostedFile.FileName);
if (filename == "" || filename == null)
{
filepath = global_filepath;
}
else
{
FileUploadBooK.SaveAs(Server.MapPath("book_inventory/" + filename));
filepath = "~/book_inventory/" + filename;
}
SqlConnection con = new SqlConnection(strcon);
if (con.State == ConnectionState.Closed)
{
con.Open();
}
SqlCommand cmd = new SqlCommand("UPDATE tbl_book SET book_name=@book_name, genre=@genre, author_name=@author_name, publisher_name=@publisher_name, publish_date=@publish_date, language=@language, edition=@edition, book_cost=@book_cost, no_of_pages=@no_of_pages, book_description=@book_description, actual_stock=@actual_stock, current_stock=@current_stock, book_img_link=@book_img_link where book_id='" + BooksID.Text.Trim() + "'", con);
cmd.Parameters.AddWithValue("@book_name", BooksName.Text.Trim());
cmd.Parameters.AddWithValue("@genre", genres);
cmd.Parameters.AddWithValue("@author_name", DropDownAuthor.SelectedItem.Value);
cmd.Parameters.AddWithValue("@publisher_name", DropDownPublisher.SelectedItem.Value);
cmd.Parameters.AddWithValue("@publish_date", PublishDate.Text.Trim());
cmd.Parameters.AddWithValue("@language", DropDownLanguage.SelectedItem.Value);
cmd.Parameters.AddWithValue("@edition", BooKsEdition.Text.Trim());
cmd.Parameters.AddWithValue("@book_cost", BooKsCost.Text.Trim());
cmd.Parameters.AddWithValue("@no_of_pages", BooKsPages.Text.Trim());
cmd.Parameters.AddWithValue("@book_description", BooKsDescription.Text.Trim());
cmd.Parameters.AddWithValue("@actual_stock", actual_stock.ToString());
cmd.Parameters.AddWithValue("@current_stock", current_stock.ToString());
cmd.Parameters.AddWithValue("@book_img_link", filepath);
cmd.ExecuteNonQuery();
con.Close();
GridBooKs.DataBind();
Response.Write("<script>alert('" + BooksName.Text.Trim() + "' + ' is successfully Updated.' ); </script>");
ClearForm();
}
catch (Exception ex)
{
Response.Write("<script>alert('" + ex.Message + "');</script>");
}
}
else
{
Response.Write("<script>alert('Invalid Book ID');</script>");
}
}//UpdateByID
