private void BtnAdd_Click(object sender, EventArgs e)
{
//O day la phuing cap Disconnect cua Microsoft
//Tuc la da se thay doi du lieu tren DataSource cua client
//Sau do goi server de add mot gia tri moi ma khong can phai load lai Data
//1. Khoi tao gia tri mac dinh cho Product
int ID = 1;
string Name = string.Empty;
float Price = 0;
int productQuantity = 0;
if (dtProduct.Rows.Count > 0)
{
ID = int.Parse(dtProduct.Compute("MAX(ProductID)", "").ToString()) + 1;
}
Product pro = new Product
{
ProductID = ID, Quantity = productQuantity, UnitPrice = Price, ProductName = Name
};
//2. Tao doi tuong moi va truyen du lieu
frmProductDetails productDetails = new frmProductDetails(true, pro, productDb);
//3. Lay ket qua tra ve
DialogResult r = productDetails.ShowDialog();
if (r == DialogResult.OK)
{
pro = productDetails.ProductAddOrEdit;
//Cap nhat vao DataTable
dtProduct.Rows.Add(pro.ProductID, pro.ProductName, pro.UnitPrice, pro.Quantity);
}
}
private void BtnUpdate_Click(object sender, EventArgs e)
{
int ID = int.Parse(txtBookID.Text);
string Title = txtBookTitle.Text;
float Price = float.Parse(txtBookPrice.Text);
int Quantity = int.Parse(txtBookQuantity.Text);
Product pro = new Product
{
ProductID = ID,
ProductName = Title,
UnitPrice = Price,
Quantity = Quantity
};
//goi phuong thuc cap nhat
frmProductDetails productDetails = new frmProductDetails(false, pro, productDb);
//3. Lay ket qua tra ve
DialogResult r = productDetails.ShowDialog();
if (r == DialogResult.OK)
{
DataRow row = dtProduct.Rows.Find(pro.ProductID);
row["ProductName"] = pro.ProductName;
row["Quantity"] = pro.Quantity;
row["UnitPrice"] = pro.UnitPrice;
}
}