static Image LoadLogoImage(string currencyName, bool allowDownload)
{
Image res = null;
try {
if (string.IsNullOrEmpty(currencyName))
{
return(null);
}
Debug.Write("loading logo: " + currencyName);
string fileName = GetIconFileName(currencyName);
if (File.Exists(fileName))
{
Debug.WriteLine(" - done");
return(Image.FromFile(fileName));
}
if (!allowDownload)
{
return(null);
}
string logoUrl = null;
if (!CurrencyLogo.TryGetValue(currencyName, out logoUrl) || string.IsNullOrEmpty(logoUrl))
{
return(null);
}
byte[] imageData = new WebClient().DownloadData(logoUrl);
if (imageData == null)
{
return(null);
}
MemoryStream stream = new MemoryStream(imageData);
res = Image.FromStream(stream);
res.Save(fileName);
}
catch (Exception e) {
Debug.WriteLine(" - error: " + e.Message);
return(null);
}
return(res);
}
public static void BuildIconsDataBase(IEnumerable <string[]> list, bool allowDownload)
{
CurrencyLogo.Clear();
foreach (string[] str in list)
{
if (string.IsNullOrEmpty(str[0]) || string.IsNullOrEmpty(str[1]) || str[1] == "null")
{
continue;
}
if (!CurrencyLogo.ContainsKey(str[0]))
{
CurrencyLogo.Add(str[0], str[1]);
}
if (!CurrencyLogoImage.ContainsKey(str[0]))
{
Image res = LoadLogoImage(str[0], allowDownload);
if (res != null && !CurrencyLogoImage.ContainsKey(str[0]))
{
CurrencyLogoImage.Add(str[0], res);
}
}
}
}
