protected void filterBySectionAndCopy()
{
// 1.- Get latest datasource
allBooks = (List <BookDTO>)ViewState["allBooks"];
// 2.- Filter by Section and fill Grid
if (DropDownSection.SelectedValue != "-1")
{
allBooks = BBooks.getBookDTOBySection(allBooks, DropDownSection.SelectedItem.Text);
}
// 3.- Filter by copy and fill Grid
if (DropDownCopies.SelectedValue != "-1")
{
allBooks = BBooks.getBookDTOByCopies(allBooks, Convert.ToInt32(DropDownCopies.SelectedValue));
}
// 5.- Filter by author or title
allBooks = BBooks.getBookDTOByAuthorOrTitle(allBooks, TextBoxSearch.Text);
// 4.- Fill Grid and save it in viewState
ViewState["filterBooks"] = allBooks;
GridMainList.DataSource = allBooks;
GridMainList.DataBind();
}
protected void fillBookDTO()
{
// Fill the grid with all records from BookDTO and save it in ViewState
allBooks = Books.getBookDTOAll();
ViewState["allBooks"] = allBooks;
GridMainList.DataSource = allBooks;
GridMainList.DataBind();
}
protected void GridMainList_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridMainList.PageIndex = e.NewPageIndex;
// Fill the grid
if (ViewState["filterBooks"] != null)
{
allBooks = (List <BookDTO>)ViewState["filterBooks"];
GridMainList.DataSource = allBooks;
GridMainList.DataBind();
}
else
{
fillBookDTO();
}
}
