private Dictionary <string, CountrySales> SummarizeSalesByCountry(List <AppSalesData> data)
{
Dictionary <string, CountrySales> result = new Dictionary <string, CountrySales>();
foreach (AppSalesData a in data)
{
if (result.ContainsKey(a.CompanyCountry))
{
result[a.CompanyCountry].TotalRevenue += a.Downloads * a.Price;
}
else
{
CountrySales c = new CountrySales(a.CompanyCountry, (a.Downloads * a.Price));
result.Add(c.Name, c);
}
}
return(result);
}
private void btnSummary_Click(object sender, EventArgs e)
{
CountrySales most = data.Values.ToList()[0], min = data.Values.ToList()[0];
double total = 0;
foreach (CountrySales c in data.Values)
{
if (most.TotalRevenue <= c.TotalRevenue)
{
most = c;
}
if (min.TotalRevenue >= c.TotalRevenue)
{
min = c;
}
total += c.TotalRevenue;
}
MessageBox.Show("Bigger seller: " + most.Name + " Total " + most.TotalRevenue.ToString("C") + "\n" +
"Worst seller: " + min.Name + " Total " + min.TotalRevenue.ToString("C") + "\n" +
"Global revenue: " + total.ToString("C"));
}