private async void btnCsv_Click(object sender, RoutedEventArgs e)
{
var picker = new FileOpenPicker();
picker.ViewMode = PickerViewMode.List;
picker.FileTypeFilter.Add(".csv");
var file = await picker.PickSingleFileAsync();
CsvRows.Clear();
using (CsvParse.CsvFileReader csvReader = new CsvParse.CsvFileReader(await file.OpenStreamForReadAsync()))
{
CsvParse.CsvRow row = new CsvParse.CsvRow();
while (csvReader.ReadRow(row))
{
string newRow = "";
for (int i = 0; i < row.Count; i++)
{
newRow += row[i] + ";";
}
CsvRows.Add(newRow);
}
}
ListViewCsv.ItemsSource = CsvRows;
}
/// <summary>
/// Reads a row of data from a CSV file
/// </summary>
/// <param name="row"></param>
/// <returns></returns>
public bool ReadRow(CsvRow row)
{
row.LineText = ReadLine();
if (String.IsNullOrEmpty(row.LineText))
{
return(false);
}
int pos = 0;
int rows = 0;
while (pos < row.LineText.Length)
{
string value;
// Special handling for quoted field
if (row.LineText[pos] == '"')
{
// Skip initial quote
pos++;
// Parse quoted value
int start = pos;
while (pos < row.LineText.Length)
{
// Test for quote character
if (row.LineText[pos] == '"')
{
// Found one
pos++;
// If two quotes together, keep one
// Otherwise, indicates end of value
if (pos >= row.LineText.Length || row.LineText[pos] != '"')
{
pos--;
break;
}
}
pos++;
}
value = row.LineText.Substring(start, pos - start);
value = value.Replace("\"\"", "\"");
}
else
{
// Parse unquoted value
int start = pos;
while (pos < row.LineText.Length && row.LineText[pos] != ',')
{
pos++;
}
value = row.LineText.Substring(start, pos - start);
}
// Add field to list
if (rows < row.Count)
{
row[rows] = value;
}
else
{
row.Add(value);
}
rows++;
// Eat up to and including next comma
while (pos < row.LineText.Length && row.LineText[pos] != ',')
{
pos++;
}
if (pos < row.LineText.Length)
{
pos++;
}
}
// Delete any unused items
while (row.Count > rows)
{
row.RemoveAt(rows);
}
// Return true if any columns read
return(row.Count > 0);
}