/// <summary>
/// Applies custom formatting to a document. (Used if matched serialiser supports formatting.)
/// </summary>
/// <param name="document">The <c>XlsxDocumentBuilder</c> wrapping the document to format.</param>
private void FormatDocument(XlsxDocumentBuilder document)
{
// Header cell styles
Options.HeaderStyle?.Invoke(document.Worksheet.Row(1).Style);
if (Options.FreezeHeader)
{
document.Worksheet.View.FreezePanes(2, 1);
}
var cells = document.Worksheet.Cells[document.Worksheet.Dimension.Address];
// Add autofilter and fit to max column width (if requested).
cells.AutoFilter = Options.AutoFilter;
if (Options.AutoFit)
{
cells.AutoFitColumns();
}
// Set header row where specified.
if (Options.HeaderHeight.HasValue)
{
document.Worksheet.Row(1).Height = Options.HeaderHeight.Value;
document.Worksheet.Row(1).CustomHeight = true;
}
}
public override async Task WriteResponseBodyAsync(OutputFormatterWriteContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var response = context.HttpContext.Response;
var elementType = _elementType(context.ObjectType) ?? context.ObjectType;
using (var document = new XlsxDocumentBuilder())
{
Options.CellStyle?.Invoke(document.Worksheet.Cells.Style);
IEnumerable data = context.Object as IEnumerable;
if (data == null && context.Object != null)
{
var array = Array.CreateInstance(elementType, 1);
array.SetValue(context.Object, 0);
data = array;
}
var serializer = SerialisersFactory().FirstOrDefault(x => x.CanSerialiseType(context.ObjectType, elementType));
serializer.Serialise(elementType, data, document);
if (document.RowCount > 0)
{
if (serializer.IgnoreFormatting)
{
// Autofit cells if specified.
if (Options.AutoFit)
{
document.AutoFit();
}
}
else
{
FormatDocument(document);
}
}
using (var ms = new MemoryStream())
{
await document.WriteToStream(ms);
ms.Seek(0, SeekOrigin.Begin);
await ms.CopyToAsync(response.Body);
}
}
}
