protected void PageChanged(object sender, DataGridPageChangedEventArgs e)
{
items.CurrentPageIndex = e.NewPageIndex;
// Get the productId from the query string
string productId = WebComponents.CleanString.InputText(Request["productId"], 50);
// Array for the data
IList <ItemInfo> itemsByProduct = null;
// Check if the data exists in the data cache
if (Cache[productId] != null)
{
itemsByProduct = (IList <ItemInfo>)Cache[productId];
}
else
{
// If the data is not in the cache then fetch the data from the business logic tier
CartItem item = new CartItem();
itemsByProduct = item.GetItemsByProduct(productId);
// store the output in the data cache with a 12 hour expiry
Cache.Add(productId, itemsByProduct, null, DateTime.Now.AddHours(12), Cache.NoSlidingExpiration, CacheItemPriority.High, null);
}
// Set the control datasource
items.DataSource = itemsByProduct;
// If there is data fetch the product name
if (itemsByProduct.Count > 0)
{
productName.Text = ((ItemInfo)itemsByProduct[0]).ProductName;
}
// Bind the data to the the control
items.DataBind();
}
public ActionResult Items(string id)
{
CartItem bo = new CartItem();
return(View(bo.GetItemsByProduct(id)));
}