public DataFile(string path, Logger logger)
{
//for instance members, use 'this.' notation - it helps identify the statics
this.logger = logger;
this.FilePath = path;
try
{
logger.LogEvent($"Loading data from {Path.GetFileName(FilePath)}");
doc = XDocument.Load(FilePath);
foreach (var val in doc.Descendants("value"))
{
try
{
ValueItem v = new ValueItem(int.Parse(val.Attribute("a").Value), int.Parse(val.Attribute("b").Value));
ValueItems.Add(v);
}
catch (FormatException)
{
//in general, it is good to log *what* went wrong, not just 'where' (i.e. include exception details)
logger.LogError($"Error loading item - non-number or empty value(s) in {val}");
}
catch (ArgumentNullException)
{
logger.LogError($"Error loading item - missing value(s) in {val}");
}
}
}
catch (System.Xml.XmlException ex)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, input file corrupted, line {ex.LineNumber}, column {ex.LinePosition}: {ex.Message}");
}
catch (ArgumentException)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, invalid path");
}
catch (Exception ex)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, unknown error ('{ex.Message}')");
}
finally
{
logger.LogEvent($"{ValueItems.Count()} items read");
}
}
public DataFile(string path, Logger logger)
{
//for instance members, use 'this.' notation - it helps identify the statics
this.logger = logger;
this.FilePath = path;
try
{
logger.LogEvent($"Loading data from {Path.GetFileName(FilePath)}");
doc = XDocument.Load(FilePath);
foreach (var val in doc.Descendants("value"))
{
try
{
ValueItem v = new ValueItem(Convert.ToDouble(val.Attribute("numberA").Value, CultureInfo.InvariantCulture), Convert.ToDouble(val.Attribute("numberB").Value, CultureInfo.InvariantCulture));
//CultureInfo.InvariantCulture parses imported double numbers to correct Culture. Both commas and periods will be converted to commas.
ValueItems.Add(v);
}
catch (FormatException)
{
//in general, it is good to log *what* went wrong, not just 'where' (i.e. include exception details)
logger.LogError($"Error loading item - non-number or empty value(s) in {val}");
}
catch (ArgumentNullException)
{
logger.LogError($"Error loading item - missing value(s) in {val}");
}
catch
{
logger.LogError($"Error loading item - invalid parameters names in {val}. Searching by secondary naming pattern...");
try
{
ValueItem v = new ValueItem(Convert.ToDouble(val.Attribute("first").Value, CultureInfo.InvariantCulture), Convert.ToDouble(val.Attribute("second").Value, CultureInfo.InvariantCulture));
ValueItems.Add(v);
}
catch
{
logger.LogError($"Error. Secondary search failed. Searching by tetriary naming pattern...");
try
{
ValueItem v = new ValueItem(Convert.ToDouble(val.Element("first").Value, CultureInfo.InvariantCulture), Convert.ToDouble(val.Element("second").Value, CultureInfo.InvariantCulture));
ValueItems.Add(v);
}
catch
{
logger.LogError($"Error. Tetriary search failed. Record ommited.");
}
}
}
}
}
catch (System.Xml.XmlException ex)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, input file corrupted, line {ex.LineNumber}, column {ex.LinePosition}: {ex.Message}");
}
catch (ArgumentException)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, invalid path");
}
catch (Exception ex)
{
logger.LogError($"Can't load data from {Path.GetFileName(FilePath)}, unknown error ('{ex.Message}')");
}
finally
{
logger.LogEvent($"{ValueItems.Count()} items read");
}
}