public async Task Export(string filePath, List <Rec> collection, IProgress <ProgressModel> progress) => await Task.Run(() =>
{
Rec rec = new Rec();
string sheetName = Path.GetFileNameWithoutExtension(filePath);
XSSFWorkbook xSSF = new XSSFWorkbook();
ISheet sheet = xSSF.CreateSheet(sheetName);
var propertiesName = rec.GetType().GetProperties();
ProgressModel model = new ProgressModel();
var requiredProps = settingHelper.GetSettingNames();
var headerRow = sheet.CreateRow(0);
for (int i = 0, j = 0; i < propertiesName.Length; i++)
{
if (!requiredProps.Any(x => x.Equals(propertiesName[i].Name)))
{
continue;
}
var cell = headerRow.CreateCell(j);
cell.SetCellValue(propertiesName[i].Name);
j++;
}
for (int i = 0; i < collection.Count; i++)
{
var rowIndex = i + 1;
var row = sheet.CreateRow(rowIndex);
model.Percentage = i;
progress.Report(model);
var o = collection[i];
for (int j = 0, k = 0; j < propertiesName.Length; j++)
{
if (!requiredProps.Any(x => x.Equals(propertiesName[j].Name)))
{
continue;
}
var value = o.GetType().GetProperty(propertiesName[j].Name).GetValue(o, null).ToString();
CellType cellType = propertiesName[j].PropertyType.Name == "String" ? CellType.String : (propertiesName[j].PropertyType.Name == "Nullable`1" ? CellType.String : CellType.Numeric);
var cell = row.CreateCell(k);
k++;
if (cellType == CellType.Numeric)
{
var result = double.Parse(value);
cell.SetCellValue(result);
}
else
{
cell.SetCellValue(value);
}
cell.SetCellType(cellType);
}
}
model.Percentage = 0;
progress.Report(model);
FileStream file = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
xSSF.Write(file);
file.Dispose();
file.Close();
Process.Start(filePath);
});