Using C# to convert MHTML file to pdf gives error : Value cannot be null.Parameter name: value.
Error is thrown in third line of code where it tries to instatiate the Document. Input fileData is byte array of mhtml file.
public byte[] Convert(byte[] fileData)
{
using (var ms = new MemoryStream(fileData))
{
var document = new Document(ms, new MhtLoadOptions());
using (MemoryStream outputStream = new MemoryStream())
{
document.Save(outputStream);
return outputStream.ToArray();
}
}
}