// method checks the ComboBoxCurrencies to return the correctly set currency ID
private void CheckComboBoxCurrencies(out string currency)
{
if (comboBoxCurrencies.Text == "All")
{
currency = null;
return;
}
else
{
bool exists = false;
ServiceReference1.ObjectsList currencyIDs = new ServiceReference1.ObjectsList();
currencyIDs = client.GetCurrencyCodes();
foreach (var id in currencyIDs.Objects)
{
if (comboBoxCurrencies.Text == id)
{
exists = true;
break;
}
}
if (exists)
{
currency = comboBoxCurrencies.Text;
return;
}
else
throw new KeyNotFoundException("There is no such currency code listed!");
}
}
// method that is called when the form load event is initiated
private void Form1_Load(object sender, EventArgs e)
{
try
{
ServiceReference1.ObjectsList ObjectsList = new ServiceReference1.ObjectsList();
// get all currencies IDs
ObjectsList = client.GetCurrencyCodes();
// get the last listed date
string lastDateStr = client.GetLastDate();
DateTime lastDate = DateTime.Parse(lastDateStr);
// set the last listed date for both start and end date
dateTimePicker2.Value = lastDate;
dateTimePicker3.Value = lastDate;
// fill the combobox with all currencies IDs + "All" for all currencies IDs to be involved
comboBoxCurrencies.Items.Add("All");
foreach (string id in ObjectsList.Objects)
{
comboBoxSource.Items.Add(id);
if (id != comboBoxSource.Items[0].ToString())
comboBoxTarget.Items.Add(id);
comboBoxCurrencies.Items.Add(id);
}
comboBoxSource.Text = comboBoxSource.Items[0].ToString();
comboBoxTarget.Text = comboBoxTarget.Items[0].ToString();
comboBoxCurrencies.Text = "All";
// fill dates list with all dates for chosen period
ShowRates();
formIsLoaded = true;
}
catch (EndpointNotFoundException ex)
{
MessageBox.Show(ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
// method checks if specified date is listed
private bool IfDateListed(string date)
{
ServiceReference1.ObjectsList dates = new ServiceReference1.ObjectsList();
dates = client.GetDates();
foreach (var d in dates.Objects)
{
if (d == date)
{
return true;
}
}
return false;
}
// method that is called when the data in comboBoxSource is changed
private void comboBoxSource_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
ServiceReference1.ObjectsList ObjectsList = new ServiceReference1.ObjectsList();
// get all currencies IDs
ObjectsList = client.GetCurrencyCodes();
comboBoxTarget.Items.Clear();
// fill in comboBoxTarget with currencies IDs, except ID chosen in comboBoxSource to avoid the possibility
// to choose the same currency ID so the conversion will have no sense
foreach (string id in ObjectsList.Objects)
{
if (id != comboBoxSource.SelectedItem.ToString())
comboBoxTarget.Items.Add(id);
}
comboBoxTarget.Text = comboBoxTarget.Items[0].ToString();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
