public ActionResult GetDocumentThumbnail(int id)
{
string doctype = "image/jpg";
var imageData = DMLObj.GetDocDataById(id, out doctype);
if (doctype.ToLower() == "application/pdf")
{
Spire.Pdf.PdfDocument document = new Spire.Pdf.PdfDocument();
document.LoadFromStream(new MemoryStream(imageData));
Image ImgDoc = document.SaveAsImage(0, Spire.Pdf.Graphics.PdfImageType.Bitmap, 120, 120);
return(File(imageToByteArray(ImgDoc.ScaleImage(150, 150)), "image/jpeg"));
}
//if (doctype.ToLower() == "application/msword")
//{
// Spire.Doc.Document document = new Spire.Doc.Document();
// document.LoadFromStream(new MemoryStream(imageData),Spire.Doc.FileFormat.Doc);
// Image ImgDoc = document.SaveToImages(0, Spire.Doc.Documents.ImageType.Metafile);
// return File(imageToByteArray(ImgDoc.ScaleImage(150, 150)), "image/jpeg");
//}
//if (doctype.ToLower() == "application/vnd.openxmlformats-officedocument.wordprocessingml.document")
//{
// Spire.Doc.Document document = new Spire.Doc.Document();
// document.LoadFromStream(new MemoryStream(imageData), Spire.Doc.FileFormat.Docx2010);
// Image ImgDoc = document.SaveToImages(0, Spire.Doc.Documents.ImageType.Metafile);
// return File(imageToByteArray(ImgDoc.ScaleImage(150, 150)), "image/jpeg");
//}
return(File(imageData, doctype));
}