private void btnAdd_Click(object sender, EventArgs e)
{
try
{
if (lbStatusCate.Text.Equals("Deleted"))
{
MessageBox.Show("This Category is unusable");
}
else
{
if (txtCategoryID.TextLength != 0 && txtName.TextLength != 0 && txtPrice.TextLength != 0 &&
txtProductID.TextLength != 0 && txtQuantity.TextLength != 0)
{
double f;
int i;
if (double.TryParse(txtPrice.Text, out f) && int.TryParse(txtQuantity.Text, out i))
{
int quantity = Int32.Parse(txtQuantity.Text);
double price = Double.Parse(txtPrice.Text);
bool chkNum = true;
if (quantity < 0)
{
chkNum = false;
MessageBox.Show("Quantity must be positive");
return;
}
if (price <= 0)
{
chkNum = false;
MessageBox.Show("Price must be bigger than 0");
return;
}
if (chkNum)
{
string cateId = txtCategoryID.Text;
string proID = txtProductID.Text;
string proName = txtName.Text;
if (productData.AddNewProduct(new Product(cateId, proID, proName, price, quantity)))
{
dtProduct.RejectChanges();
dtProduct.Rows.Add(proID, proName, quantity, price);
dtProduct.AcceptChanges();
MessageBox.Show("New Product added!");
lbStatusProduct.Text = "";
LoadProduct();
}
else
{
MessageBox.Show("Error when adding product !");
}
}
}
else
{
MessageBox.Show("Quantity and Price must be number!!");
}
}
else
{
MessageBox.Show("You left some textfield blank!!! ");
}
}
}
catch (Exception ex)
{
if (ex.Message.Contains("duplicate"))
{
MessageBox.Show("This productID is already existed");
}
else
{
MessageBox.Show(ex.Message);
}
}
}