private void button1_Click(object sender, EventArgs e)
{
try
{
Book book = lms.Book.FirstOrDefault(o => o.rfid == txtBorrowRfid.Text);
Student std = lms.Student.FirstOrDefault(o => o.scode == txtBorrowScode.Text);
if (book.activeStock == null)
{
book.activeStock = book.stock;
}
if (book.name != null && std.name != null && book.activeStock > 0)
{
Borrow brw = new Borrow()
{
Bookid = book.id, Studentid = std.id, dateOfBorrow = DateTime.Now
};
lms.Borrow.Add(brw);
book.activeStock -= 1;
if (MessageBox.Show("Do you want to give " + book.name + " named book to " + std.name + " " + std.surname + " named student ?", "Message", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
lms.SaveChanges();
}
var count = lms.Borrow.Count(o => o.Bookid == brw.Bookid);
label7.Text = count.ToString();
}
else
{
MessageBox.Show("Rfid and Scode is Not recognized or There is no active Stock", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
getBorrowList();
panelBorrow.Enabled = false;
}catch (Exception ex)
{
MessageBox.Show(ex.Message, "message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void dataGridView1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Delete)
{
if (MessageBox.Show("Are you sure want to delete this ?", "System", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
try
{
lms.Book.Remove(bookBindingSource.Current as Book);
bookBindingSource.RemoveCurrent();
lms.SaveChanges();
}catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}