/// <summary>
/// Actual currency conversion occurs when the user selects new currency from the drop-down menu.
/// Although we have loaded the data in the drop-down for the user to view, and we need to load then again to compare with the user selected data.
/// </summary>
private void CmbNewCurrency_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
TxtResult.Clear(); // All previous result are clear before loading new result.
string jason;
using (StreamReader sr = new StreamReader(JCurrencyList)) // loading currecy from local CurrencyList.json file
{
jason = sr.ReadToEnd();
}
CurrencyList cl = new CurrencyList();
JsonConvert.PopulateObject(jason, cl);
foreach (var item in cl.Currency)
{
if (item.Key == CmbCurrentCurrency.SelectedItem.ToString())
{
currentCurrency = item.Value; // based on user selected currency, values are selected . e.g Key: Pound Sterling (GBP), Value: GBP
}
if (item.Key == CmbNewCurrency.SelectedItem.ToString())
{
newCurrency = item.Value; // based on user selected currency, values are selected . e.g Key: Swiss Franc (CHF), Value: CHF
}
}
if (CmbCurrentCurrency.Text != "") // This will ensure that current currency are not empty before it start conversion processing
{
ProcessCurrencyConversion();
}
}
/// <summary>
/// LoadSuportedcurrency() method will load two drop down menu from CurrencyList.json file.
/// </summary>
private void LoadSuportedCurrency()
{
string jason;
using (StreamReader sr = new StreamReader(JCurrencyList))
{
jason = sr.ReadToEnd();
}
CurrencyList cl = new CurrencyList();
JsonConvert.PopulateObject(jason, cl);
foreach (var item in cl.Currency)
{
CmbCurrentCurrency.Items.Add(item.Key);
//if (!item.Key.Contains(CmbCurrentCurrency.Text))
CmbNewCurrency.Items.Add(item.Key);
}
}