// Click the New Product button to add a new product
private void btnNewProduct_Click(object sender, EventArgs e)
{
frmAddEditProduct secondForm = new frmAddEditProduct();
secondForm.bIsNewProduct = true;
DialogResult result = secondForm.ShowDialog();
// if the new product was added into the database, refresh the product list
if (result == DialogResult.OK)
{
DisplayProducts();
}
}
// Click the Edit Product button to edit the current product
private void btnEdit_Click(object sender, EventArgs e)
{
// if no product was selected, give warning message and return
if (nProductID == 0)
{
MessageBox.Show("Please select a product first!");
return;
}
// get the current product from the database
Product objCurrentProduct = null;
using (TravelExpertDataDataContext dbContext1 = new TravelExpertDataDataContext())
{
objCurrentProduct = (from prod in dbContext1.Products
where prod.ProductId == nProductID
select prod).SingleOrDefault();
}
// if the current product does not exist, refresh the product list and return
if (objCurrentProduct == null)
{
MessageBox.Show("The product does not exist any more, please check again!");
DisplayProducts();
return;
}
// open the new form to edit the product
frmAddEditProduct secondFrm = new frmAddEditProduct();
secondFrm.bIsNewProduct = false;
secondFrm.objCurrentProduct = objCurrentProduct;
DialogResult result = secondFrm.ShowDialog();
// if the product was successfully edited, refresh the product list
if (result == DialogResult.OK)
{
DisplayProducts();
}
}