public byte[] ViewAsPng(string filePath)
{
//List<MemoryStream> pages = new List<MemoryStream>();
//var streamFactory = new MemoryPageStreamFactory(pages);
//using (Viewer viewer = new Viewer(filePath))
//{
// PngViewOptions options = new PngViewOptions(streamFactory);
// viewer.View(options);
// long len = 0;
// foreach (var page in pages)
// {
// len += page.Length;
// }
// var byteArray = new byte[len];
// long i = 0;
// foreach (var page in pages)
// {
// page.ToArray().CopyTo(byteArray, i);
// i += page.Length;
// }
// return byteArray;
//}
var bytes = File.ReadAllBytes(filePath);
var stream = new MemoryStream(bytes);
using (var viewer = new Viewer(stream))
{
var pages = new List <MemoryStream>();
var streamFactory = new MemoryPageStreamFactory(pages);
var options = new PngViewOptions(streamFactory);
viewer.View(options);
var imageByteArray = new List <byte[]>();
foreach (var page in pages)
{
imageByteArray.Add(page.ToArray());
}
long len = 0;
foreach (var page in pages)
{
len += page.Length;
}
var byteArray = new byte[len];
long i = 0;
foreach (var page in pages)
{
page.ToArray().CopyTo(byteArray, i);
i += page.Length;
}
return(byteArray);
}
}
public string ViewAsHtml(string filePath)
{
List <MemoryStream> pages = new List <MemoryStream>();
using (Viewer viewer = new Viewer(filePath))
{
MemoryPageStreamFactory pageStreamFactory = new MemoryPageStreamFactory(pages);
ViewOptions viewOptions =
HtmlViewOptions.ForEmbeddedResources(pageStreamFactory);
viewer.View(viewOptions);
}
var stringContent = new StringBuilder();
foreach (var page in pages)
{
stringContent.Append(Encoding.UTF8.GetString(page.ToArray()));
}
return(stringContent.ToString());
}
