/// <summary>
/// Method checks if the value input for monthly sales is a valid number. If is is the number
/// is converted to a dollar figure else a message is shown that the information
/// is not valid and the field is cleared.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TotalMonthlySalesTextBox_Leave(object sender, EventArgs e)
{
double TotalSales;
if (TotalMonthlySalesTextBox.Text != "")
{
try
{
TotalSales = Convert.ToDouble(TotalMonthlySalesTextBox.Text);
TotalMonthlySalesTextBox.Text = TotalSales.ToString("C2");
}
catch (Exception exception)
{
try
{
TotalSales = double.Parse(TotalMonthlySalesTextBox.Text, NumberStyles.Currency);
TotalMonthlySalesTextBox.Text = TotalSales.ToString("C2");
}
catch
{
MessageBox.Show("Invalid Data Entered", "Input Error");
Debug.WriteLine(exception.Message);
TotalMonthlySalesTextBox.Focus();
TotalMonthlySalesTextBox.Text = "";
TotalMonthlySalesTextBox.SelectAll();
}
}
}
}
/// <summary>
/// reads in present sales report, if exists, then updates
/// sales report dictionary values, adding previous total sales
/// to total sales after each user transaction
/// finally, writes new updated values to the sales report
/// by overwriting existing data
/// </summary>
private void GenerateSalesReport()
{
if (File.Exists(_reportPath))
{
using (StreamReader sr = new StreamReader(_reportPath))
{
while (!sr.EndOfStream)
{
string line = sr.ReadLine();
if (line.Contains("$"))
{
string[] totalLine = line.Split('$');
TotalSales += decimal.Parse(totalLine[1]);
}
else if (line != "")
{
string[] dictString = line.Split('|');
string itemName = dictString[0];
int lastQtySold = int.Parse(dictString[1]);
foreach (Item item in _itemList)
{
if (item.Name == itemName)
{
_salesReport[itemName] = lastQtySold + item.QtySold;
}
}
}
}
}
using (StreamWriter sw = new StreamWriter(_reportPath, false))
{
foreach (KeyValuePair <string, int> entry in _salesReport)
{
sw.WriteLine($"{entry.Key}|{entry.Value}");
}
sw.WriteLine();
sw.WriteLine($"**TOTAL SALES** {TotalSales.ToString("C")}");
TotalSales = 0;
}
}
else
{
using (StreamWriter sw = new StreamWriter(_reportPath, false))
{
foreach (KeyValuePair <string, int> line in _salesReport)
{
string key = line.Key;
int qtySold = 0;
foreach (Item item in _itemList)
{
if (item.Name == key)
{
qtySold = item.QtySold;
}
}
sw.WriteLine($"{line.Key}|{line.Value + qtySold}");
}
sw.WriteLine();
sw.WriteLine($"**TOTAL SALES** {TotalSales.ToString("C")}");
}
}
}