public ImportViewModel()
{
ActiveVm = this;
CancelCommand = new RelayCommand(OnCancel);
SelectImportCommand = new RelayCommand<ImportModeViewModel>(OnSelectImport);
CsvImportVm = new CsvImportViewModel();
WkImportVm = new WkImportViewModel();
_importModes = new ImportModeViewModel[]
{
CsvImportVm,
WkImportVm
};
foreach (ImportModeViewModel vm in _importModes)
{
vm.StepChanged += OnCurrentModeStepChanged;
vm.Cancel += OnCurrentModeCanceled;
vm.Finished += OnCurrentModeFinished;
}
}
public ImportViewModel()
{
ActiveVm = this;
CancelCommand = new RelayCommand(OnCancel);
SelectImportCommand = new RelayCommand <ImportModeViewModel>(OnSelectImport);
CsvImportVm = new CsvImportViewModel();
WkImportVm = new WkImportViewModel();
_importModes = new ImportModeViewModel[]
{
CsvImportVm,
WkImportVm
};
foreach (ImportModeViewModel vm in _importModes)
{
vm.StepChanged += OnCurrentModeStepChanged;
vm.Cancel += OnCurrentModeCanceled;
vm.Finished += OnCurrentModeFinished;
}
}
public CsvImportColumnsStepViewModel(ImportModeViewModel parentMode)
: base(parentMode)
{
_parent = (CsvImportViewModel)parentMode;
NoTypeBehavior = CsvImportNoTypeBehavior.Auto;
}
/// <summary>
/// Attempts to load the file set in the file path as a CSV file and to send the resulting
/// data to the parent mode view model.
/// May be unsuccessful and return false.
/// </summary>
public bool TryLoadFile()
{
try
{
Encoding selectedEncoding;
try
{
string encodingName = _selectedEncoding;
if (string.IsNullOrWhiteSpace(encodingName))
{
encodingName = "utf-8"; // Default to UTF-8
}
selectedEncoding = Encoding.GetEncoding(encodingName);
}
catch (ArgumentException)
{
ErrorMessage = string.Format("The encoding name \"{0}\" is not supported.", _selectedEncoding);
return(false);
}
using (CsvFileReader csvReader = new CsvFileReader(_filePath, EmptyLineBehavior.Ignore, selectedEncoding))
{
// Set reading parameters.
csvReader.Delimiter = _csvSeparator.First();
csvReader.Quote = _csvQuote.First();
CsvImportViewModel parent = (CsvImportViewModel)ParentMode;
parent.CsvLines.Clear();
List <string> header = new List <string>();
List <string> row = new List <string>();
int maxColumns = 0;
// Read header row if existing.
if (_csvHasHeader)
{
csvReader.ReadRow(header);
maxColumns = header.Count;
}
// Read data rows.
while (csvReader.ReadRow(row))
{
parent.CsvLines.Add(row);
maxColumns = Math.Max(row.Count, maxColumns);
row = new List <string>();
}
// Add missing columns to the header, with generic names.
// When there is no header, obviously, all columns are missing.
while (header.Count < maxColumns)
{
header.Add(string.Format("[Column {0}]", header.Count + 1));
}
parent.CsvColumns = header;
}
}
catch (Exception ex)
{
// On exception, prevent going any further in the import process, display an error, and log it.
ErrorMessage = string.Format("An unknown error occured while reading the CSV file:{0}{1}", Environment.NewLine, ex.Message);
LogHelper.GetLogger("CSV Import").ErrorFormat("Error while reading CSV: {1}", ex.Message);
return(false);
}
// No columns?
if (!((CsvImportViewModel)ParentMode).CsvColumns.Any())
{
ErrorMessage = "The file seems to be empty.";
return(false);
}
// Aaand we're done.
return(true);
}
public CsvImportColumnsStepViewModel(ImportModeViewModel parentMode)
: base(parentMode)
{
_parent = (CsvImportViewModel)parentMode;
NoTypeBehavior = CsvImportNoTypeBehavior.Auto;
}
