public static void Sort(List<SongData> rows, SongOrder order)
{
List<SongData> irows = new List<SongData>();
foreach (SongData row in rows) irows.Add(row);
irows.Sort(GetComparison(order));
rows.Clear();
foreach (SongData row in irows) rows.Add(row);
}
public static Comparison<SongData> GetComparison(SongOrder order)
{
switch (order)
{
case SongOrder.TitleGroup:
return CompareTitleGroup;
case SongOrder.GroupTitle:
return CompareTitleGroup;
case SongOrder.Database:
return CompareDatabase;
}
throw new Exception("Unsupported order:" + order.ToString());
}
public IEnumerable<SongData> GetSongs(SongOrder order)
{
List<SongData> rows = new List<SongData>();
foreach (SongData row in EnumSongs())
{
rows.Add(row);
}
rows.Sort(Sorting.GetComparison(order));
return rows;
}
protected void BtnOrder_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
validateNumbers();
if (lblValidation.Text != "")
{
return;
}
ArrayList arrProducts = new ArrayList(); // used to store the ProductNumber for each selected product
int count = 0; // used to count the number of selected products
// Iterate through the rows (records) of the GridView and store the ProductNumber
// for each row that is checked
int songID;
string title;
int quantity;
decimal price;
string format;
int totalQuantity = 0;
decimal grandTotal = 0m;
lblSubscriptionNotification.Visible = true;
for (int row = 0; row < gvProducts.Rows.Count; row++)
{
CheckBox CBox;
TextBox TBox;
DropDownList DropDownFormat;
// Get the reference for the chkSelect control in the current row
CBox = (CheckBox)gvProducts.Rows[row].FindControl("chkSelect");
if (CBox.Checked)
{
// Get the ProductNumber from the BoundField from the GridView for the current row
// and store the value in the array of selected products.
TBox = (TextBox)gvProducts.Rows[row].FindControl("txtQtyAdd");
songID = Convert.ToInt32(gvProducts.DataKeys[row].Values[0]);
title = gvProducts.Rows[row].Cells[1].Text;
quantity = Convert.ToInt32(TBox.Text);
totalQuantity += quantity;
price = Convert.ToDecimal(gvProducts.DataKeys[row].Values[1]);
DropDownFormat = (DropDownList)gvProducts.Rows[row].FindControl("ddFormat");
format = DropDownFormat.Text;
SongOrder song = new SongOrder(songID, title, quantity, price, format);
grandTotal += song.TotalCost;
arrProducts.Add(song);
count = count + 1;
}
}
string subscription = drpdwnPayment.SelectedValue;
switch (subscription)
{
case "monthly":
grandTotal += 2;
lblSubscriptionNotification.Text += "2";
break;
case "annual":
grandTotal += 20;
lblSubscriptionNotification.Text += "20";
break;
case "one":
grandTotal += 5;
lblSubscriptionNotification.Text += "5";
break;
}
//Show customer info
showUserOutput();
updateSubscriptionStatistics();
allElementsHide();
gvUserOutput.DataSource = arrProducts;
gvUserOutput.Columns[0].FooterText = "Totals:";
gvUserOutput.Columns[2].FooterText = Convert.ToString(totalQuantity);
gvUserOutput.Columns[4].FooterText = Convert.ToString(grandTotal);
gvUserOutput.DataBind();
}
}
