GroupDocs.Signature for .NET 21.6 Release Notes

    public sealed class FileType
    {
        /// <summary>
        /// Excel binary Temlpate (.xlt) represents Excel Temlpate File Format.
        /// Learn more about this file format <a href="https://wiki.fileformat.com/spreadsheet/xlt">here</a>. 
        /// </summary>
        public static readonly FileType XLT = new FileType("Excel Template file", ".xlt");

        /// <summary>
        /// Excel Office OpenXML file Temlpate (.xltm) represents Excel Temlpate File Format.
        /// Learn more about this file format <a href="https://wiki.fileformat.com/spreadsheet/xltm">here</a>. 
        /// </summary>
        public static readonly FileType XLTM = new FileType("Excel Template file", ".xltm");
    };

    public class SignatureSettings
    {
        /// <summary>
        /// Gets or sets flag that includes deleted signatures into Document Info result.
        /// Each Signature <see cref="BaseSignature"/> has Deleted flag <see cref="BaseSignature.Deleted"/> to detect if it was deleted.
        /// </summary>
        public bool ShowDeletedSignaturesInfo { get; set; } = true;
   }

    /// <summary>
    ///  Defines document description properties.
    /// </summary>
    public interface IDocumentInfo
	{
        /// <summary>
        /// Collection of document all types signatures <see cref="BaseSignature"/>.
        /// </summary>
        IList<BaseSignature> Signatures { get; }
	}

    public class DocumentInfo : IDocumentInfo
	{
        ...
        /// <summary>
        /// Collection of document all types signatures <see cref="BaseSignature"/>.
        /// </summary>
        public IList<BaseSignature> Signatures { get; }
	}

public static void Run()
{
    // define Signature settings to remove Deleted signatures from the list
    SignatureSettings signatureSettings = new SignatureSettings()
    {
        ShowDeletedSignaturesInfo = false
    };
    using (Signature signature = new Signature("signed.pdf", signatureSettings))
    {
        IDocumentInfo documentInfo = signature.GetDocumentInfo();
        
        // display all document signatures information without deleted ones
        Console.WriteLine($"Document actual Signatures : {documentInfo.Signatures.Count}");
        foreach (BaseSignature baseSignature in documentInfo.Signatures)
        {
            Console.WriteLine(
                $" - #{baseSignature.SignatureId}: Type: {baseSignature.SignatureType} Location: {baseSignature.Left}x{baseSignature.Top}. " +
                $"Size: {baseSignature.Width}x{baseSignature.Height}. " +
                $"CreatedOn/ModifiedOn: {baseSignature.CreatedOn.ToShortDateString()} / {baseSignature.ModifiedOn.ToShortDateString()}");
        }                
        
        // display document process history information
        Console.WriteLine($"Document Process logs information: count = {documentInfo.ProcessLogs.Count}");
        foreach (ProcessLog processLog in documentInfo.ProcessLogs)
        {
            Console.WriteLine($" - operation [{processLog.Type}] on {processLog.Date.ToShortDateString()}. Succedded/Failed {processLog.Succeeded}/{processLog.Failed}. Message: {processLog.Message} : ");
            if (processLog.Signatures != null)
            {
                foreach (BaseSignature logSignature in processLog.Signatures)
                {
                    Console.WriteLine($"\t\t -{logSignature.SignatureType} #{logSignature.SignatureId} at {logSignature.Top} x {logSignature.Left} pos;");
                }
            }
        }
    }
}