public void DetectFileFormat()
{
//ExStart
//ExFor:FileFormatUtil.DetectFileFormat(String)
//ExFor:FileFormatInfo
//ExFor:FileFormatInfo.LoadFormat
//ExFor:FileFormatInfo.IsEncrypted
//ExFor:FileFormatInfo.HasDigitalSignature
//ExId:DetectFileFormat
//ExSummary:Shows how to use the FileFormatUtil class to detect the document format and other features of the document.
FileFormatInfo info = FileFormatUtil.DetectFileFormat(MyDir + "Document.doc");
Console.WriteLine("The document format is: " + FileFormatUtil.LoadFormatToExtension(info.LoadFormat));
Console.WriteLine("Document is encrypted: " + info.IsEncrypted);
Console.WriteLine("Document has a digital signature: " + info.HasDigitalSignature);
//ExEnd
}