private void SetEntityByColumn(TCell cell, Column <TEntity, TCell> column, ImportResultItem <TEntity> resultItem,
int index, TEntity entity)
{
if (string.IsNullOrWhiteSpace(cell?.ToString()))
{
//为空的时候。
if (column.IsRequire)
{
var errorMessage = BuildErrorMessageByTemplate(column.GetErrorMessageIfEmpty(), column);
resultItem.AddError(index, errorMessage);
}
else
{
column.SetEmptyOrNull(entity);
}
}
else
{
if (!column.TrySetValue(entity, cell, out var errorMessage))
{
errorMessage = BuildErrorMessageByTemplate(errorMessage, column);
resultItem.AddError(index, errorMessage);
}
}
}
private IList <ImportResultItem <TEntity> > ImportResultItems()
{
var result = new List <ImportResultItem <TEntity> >();
// read titles.
_fileReader.TryReadInString(TitleRowIndex, out var titleEnum);
var titles = titleEnum.ToList();
var rowIndex = TitleRowIndex + 1;
while (TryGetRows(rowIndex, out var cells))
{
var resultItem = new ImportResultItem <TEntity> {
Row = rowIndex
};
var entity = resultItem.Data = Create();
result.Add(resultItem);
var otherIndex = _columns.Count;
for (var titleIndex = 0; titleIndex < titles.Count(); titleIndex++)
{
if (titleIndex >= otherIndex) // 带有扩展列
{
if (OtherColumn == null)
{
break;
}
OtherColumn.Set(entity, cells[titleIndex], titles[titleIndex]);
continue;
}
var column = _columns[titleIndex];
//看一下当前行。
if (titleIndex < cells.Count)
{
var cell = cells[titleIndex];
SetEntityByColumn(cell, column, resultItem, titleIndex, entity);
}
else
{
column.SetEmptyOrNull(entity);
}
}
rowIndex++;
}
return(result);
}